[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Now added a Wiki page to describe troubleshooting of this problem. https://help.ubuntu.com/community/ReschedulingInterrupts -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Marking this as won't fix as the more significant outstanding issues were resolved, namely: 1. Some issues causes by incorrect BIOS settings (see the case of Barteq's issues) 2. Opera causes a lot of wakeups that causes a lot of legitimate rescheduling interrupts - this is not a scheduler problem but an application issue 3. Given details on how to identify which rogue apps are causing a lot of wakeups (debug using top, vmstat, etc) 4. Any improvements upstream are significant patches back to 2.6.24, and the risk of upsetting the scheduler at this point in the release cycle is too high. Some less intrusive patches have been tried by the power consumption increases when reducing rescheduling interrupts. 5. Rescheduling interrupts shown to be a manifestation of other wakeup or interrupt issues (e.g. bad ACPI DSTD, bad apps, etc) and not necessarily a problem with the scheduler. 6. Hardy+1 will pick up a lot of the more subtle scheduler improvements in 2.6.25+ ** Changed in: linux (Ubuntu) Status: In Progress => Won't Fix -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Brandon, attached is my awk script to parse the interrupts.log file, to be run as follows: awk -f dualcore.awk < interrupts.log it calculates the number of interrupts a second you are getting over a 10 sample second period. From what I can see, you system looks fine and is not suffering from the problem described in this bug. Your first sample of 10 seconds looks as follows: IRQ CPU0 IRQ/s CPU1 IRQ/s Description 0: 330.10.0 IO-APIC-edge timer 1:0.10.0 IO-APIC-edge i8042 5:0.00.0 IO-APIC-edge serial 8:0.00.0 IO-APIC-edge rtc 9:9.70.0 IO-APIC-fasteoi acpi 12:0.00.0 IO-APIC-edge i8042 15:0.00.0 IO-APIC-edge libata 20: 176.20.0 IO-APIC-fasteoi [EMAIL PROTECTED]::00:02.0 21:0.00.0 IO-APIC-fasteoi ehci_hcd:usb1 22:0.00.0 IO-APIC-fasteoi ohci1394, HDA Intel 23:0.00.0 IO-APIC-fasteoi sdhci:slot0 217:3.00.0 PCI-MSI-edge eth0 218: 32.10.0 PCI-MSI-edge iwl3945 219:2.00.0 PCI-MSI-edge ahci NMI:0.00.0 Non-maskable interrupts LOC: 33.5 197.8 Local timer interrupts RES: 271.6 290.2 Rescheduling interrupts CAL:0.00.1 function call interrupts TLB:0.10.3 TLB shootdowns TRM:0.00.0 Thermal event interrupts SPU:0.00.0 Spurious interrupts ERR:0.00.0 MIS:0.00.0 This is fine. No need to worry. ** Attachment added: "Awk script to parse interrupts log file" http://launchpadlibrarian.net/13283303/dualcore.awk -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Colin, Thanks for your explanation. I ran cat /proc/interrupts >> interrupts.log;sleep 60;cat /proc/interrupts >> interrupts.log a few times. The system was idle with nothing but a few terminals open. Let me know if this log helps. Also, I tried running vmstat but am not exactly sure what I am looking at or if I'm running it right. ** Attachment added: "interrupts.log" http://launchpadlibrarian.net/13282931/interrupts.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Colin, I did not know this, thanks for the information. I will try to track down which program causes the wakeups -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Yves, The rescheduling interrupts information was added into the kernel in the main kernel in July 2007 ( http://lkml.org/lkml/2007/7/30/437 ) and I believe it was not in the Gutsy kernel tree - so this activity was not visible in user space and hence PowerTop would not be able to report it in Gutsy. Also, even if the software components are the same, the software has changed due to upgrades (e.g. some software may now have more/less threads running), so like for like comparison is difficult. Colin. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hello, I use 2.6.24 on my T2300 dualcore laptop, with kubuntu hardy (without opera), and also 2.6.24 on a PIII-3GHz with debian unstable. Note that I do see "Rescheduling Interrupts" as well on my debian, but less often and less intensive. Isn't this a pointer to that it's however a kernel issue? In gutsy I did not see that many wakeups neither on my laptop, I do not remember having seen "Rescheduling Interrupts" at all in powertop... Also, I dist-upgraded from gutsy to hardy, so my installed software is basically the same. regards and thanks for your detailed look into this -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Brandon, Just to re-iterate things: 1. Rescheduling Interrupts are not necessarily a problem - they are just show that the scheduler is working hard to distribute load across multiple cores to keep the processors evenly load and keep overall CPU power down. The main issue is if are they excessive (how many per second) and if so, what is causing them. 2. To find out what is causing them, it is good to look at the interrupt activity over a period of time, by looking at /proc/interrupts. For example, capturing /proc/interrupts in a log, sleeping for 10 seconds and capturing /proc/interrupts again. Take the 1st results from the 2nd and you will then see which interrupts may be causing the wakeups that cause the rescheduling interrupts activity. This may show a mis-configured BIOS (very unlikely, but did happen in Barteq's case). 3. The next thing to look at is user space program activity. Some apps do excessing sleep/wakeups on many threads which cause the scheduler to try to load balance, which shows up a "rescheduling interrupts". A good way to see system activity is use vmstat and look for context switch (cs) activity. If this is excessively high, then one needs to find out which application(s) are contributing to this. The top command is a quick way of seeing which processes are using a lot of CPU and possibly causing this activity. Hope this helps. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
For what it's worth, I upgraded to the 2.6.24-15 kernel that was released in the Hardy Beta and I'm still getting about 50% of my wakeups from : Rescheduling interrupts. I can provide logs etc. if it would help. I've been trying to follow the recent exchange between barteq and colin but got a bit lost. Thanks, Brandon -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Barteq, I suspected it would be some kind of killer app(!). I think we can conclusively say that this is probably wrapped up now with respect to a kernel issue. I suggest if you think Opera is misbehaving by sucking all your power by over active wakeup calls then you put a bug report against it and possibly reference this bug for some history. Thanks for all you input so that we could corner this one. If you are OK with this, I'd like to mark this bug as "won't fix" as there is no further kernel issue to resolve. Regards, Colin -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
It is Opera.. With no pages opened it looks like this; procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 0 1088276 93032 154568000 0 0 79 129 3 0 97 0 0 0 0 1088168 93032 154568000 0 0 104 305 4 1 95 0 0 0 0 1088344 93032 154568000 0 0 87 130 3 1 96 0 0 0 0 1088544 93032 154568000 0 0 75 119 3 0 97 0 0 0 0 1088232 93032 154568000 0 0 112 176 2 0 97 0 0 0 0 1088488 93032 154568000 0 0 72 125 3 0 97 0 0 0 0 1088036 93032 154568000 0 0 74 131 2 0 97 0 0 0 0 1088460 93032 154568000 0 In attachment - first two top results - no pages opened0 second two - this page opened.. 0 91 319 3 0 97 0 0 0 0 1088460 93032 154568000 0 0 128 254 6 1 93 0 0 0 0 1088124 93032 154568000 0 0 75 127 3 0 96 0 0 0 0 1088340 93032 154568000 0 0 81 130 3 0 97 0 0 0 0 1088116 93032 154568000 0 0 85 153 3 0 97 0 0 0 0 1088204 93032 154568000 0 0 82 122 4 0 96 0 0 0 0 1088064 93032 154568000 0 0 98 311 4 1 96 0 0 0 0 1088180 93032 154568000 0 0 78 114 3 0 97 0 0 0 0 1088364 93032 154568000 0 0 73 122 3 0 97 0 0 0 0 1088084 93032 154568000 0 0 74 129 3 0 97 0 0 0 0 1088228 93032 154568000 0 0 71 119 2 0 98 0 0 0 0 1088060 93032 154568000 0 0 80 137 3 1 97 0 0 0 0 1088312 93032 154568000 0 0 91 349 4 0 96 0 0 0 0 1088372 93032 154568000 0 0 76 143 2 0 97 0 0 0 0 1088100 93032 154568000 0 0 72 128 3 1 96 0 0 0 0 1088316 93032 154568000 0 0 86 140 3 1 96 0 0 0 0 1088020 93032 154568000 0 0 79 129 3 0 97 0 0 0 0 1088244 93032 154568000 0 0 77 140 3 1 97 0 With this page opened: procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 0 1092884 93112 15415720023 125 200 1202 5 6 87 2 0 0 0 1092436 93112 154157200 0 0 134 4304 2 4 94 0 0 0 0 1092360 93112 154157200 0 0 113 4534 3 4 93 0 1 0 0 1092176 93112 154157200 0 0 136 4364 7 5 88 0 0 0 0 1092328 93112 154157200 0 0 105 4532 3 2 95 0 0 0 0 1092380 93112 154157200 0 0 109 4456 2 5 93 0 0 0 0 1092148 93112 154157200 0 0 97 4510 2 3 95 0 1 0 0 1092368 93112 154157200 0 0 183 3997 5 3 92 0 2 0 0 1092428 93112 154157200 0 0 122 3681 4 4 92 0 2 0 0 1092280 93112 154157200 0 136 187 3908 3 3 93 0 In attachment - first two top results - no pages opened0 second two - this page opened.. BTW I'm using opera for a very long time and didn't have such problems with it.. It is still runnin on my old acer notebook without any strange issues. Of course can't say how many cs it generates there becouse old notebook is being repaired, but will post results in some days. ** Attachment added: "top.log" http://launchpadlibrarian.net/13260792/top.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi again, With that many context switched it may be worth running top in batch mode to see which process(es) are causing this much activity: top -b -d 10 -n 6 Colin -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
procs ---memory-- ---swap-- -io -system-- cpu r b swpd free buff cache si sobibo in cs us sy id wa 0 0 0 2320476 38056 36609200 0 0 149 2951 2 2 95 0 0 0 0 2320272 38056 36609200 0 0 188 2889 3 4 92 0 0 0 0 2320512 38056 36609200 0 0 175 3198 4 3 93 0 0 0 0 2320656 38056 36609200 0 0 177 3289 3 2 95 0 0 0 0 2320376 38056 36609200 0 4 119 3260 5 3 92 0 1 0 0 2320536 38056 36609200 0 0 122 3304 3 3 94 0 0 0 0 2320664 38056 36609200 0 0 128 3288 4 2 94 0 0 0 0 2320484 38056 36609200 0 0 173 3457 5 2 92 0 0 0 0 2320608 38056 36609200 0 0 132 3301 3 3 94 0 0 0 0 2320344 38056 36609200 0 0 126 3159 5 3 92 0 0 0 0 2320472 38056 36609200 0 0 118 3267 3 3 94 0 0 0 0 2320608 38056 36609200 0 0 141 3294 3 3 94 0 0 0 0 2320320 38056 36609200 012 138 3074 3 3 94 0 0 0 0 2320628 38056 36609200 0 0 157 3468 4 2 93 0 0 0 0 2320812 38056 36609200 0 0 139 3180 3 3 94 0 0 0 0 2320540 38056 36609200 0 0 126 3223 3 3 94 0 0 0 0 2320628 38056 36609200 0 0 122 3171 3 2 94 0 0 0 0 2320348 38056 36609200 0 0 159 3263 4 2 94 0 0 0 0 2320516 38056 36609200 0 0 133 3237 3 2 95 0 0 0 0 2320724 38056 36609200 0 0 170 3334 4 4 92 0 0 0 0 2320652 38056 36609200 0 0 187 3330 5 1 94 0 0 0 0 2320748 38056 36609200 0 0 142 3328 4 4 92 0 0 0 0 2320856 38056 36609200 0 0 133 3269 3 3 94 0 About 3k context switches.. Quite much.. I've asked my two friends to show their vmstat and voila.. the have about 300~500 CS/s. http://wklejto.pl/2171 http://phpfi.com/308388 -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi, It's good to hear that things are more promising now. The overall IRQ delta over 10 seconds (from your last results of interrupts_normal_xorg.log) look more promising - IRQ 0 is definitely not being saturated now, but it does appear that you system is busy somewhere causing ~7K rescheduling interrupts per second. CPU0 CPU1 0: 2597 2582 IO-APIC-edge timer 1:0 0 IO-APIC-edge i8042 8:4 3 IO-APIC-edge rtc 9: 1816 IO-APIC-fasteoi acpi 12: 0 0 IO-APIC-edge i8042 14: 0 0 IO-APIC-edge libata 15: 0 0 IO-APIC-edge libata 16: 3525 IO-APIC-fasteoi uhci_hcd:usb5, nvidia 17: 0 0 IO-APIC-fasteoi uhci_hcd:usb1 18: 0 0 IO-APIC-fasteoi uhci_hcd:usb2 19: 4 4 IO-APIC-fasteoi ehci_hcd:usb3 21: 1 1 IO-APIC-fasteoi ehci_hcd:usb4 22: 0 0 IO-APIC-fasteoi uhci_hcd:usb6, ohci1394, HDA Intel 23: 0 0 IO-APIC-fasteoi uhci_hcd:usb7 215: 384 410 PCI-MSI-edge iwl4965 216:1416 PCI-MSI-edge eth0 217: 3 2 PCI-MSI-edge ahci NMI: 0 0 Non-maskable interrupts LOC: 21101800 Local timer interrupts RES: 68628 75310 Rescheduling interrupts CAL: 0 0 function call interrupts TLB: 0 6 TLB shootdowns TRM: 0 0 Thermal event interrupts SPU: 0 0 Spurious interrupts ERR: 0 MIS: 0 Running vmstat 1 for ~15-30 seconds will give an idea of how busy the system is - primarily the context switches/second will be interesting to see. Colin -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Powertop on normal laptop session with xorg on and so ** Attachment added: "powertop_xorg.log" http://launchpadlibrarian.net/13193918/powertop_xorg.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Attached Interrupts on desktop full on with wifi active.. After some minutes there is still 1,5k interrupts without a reason, so problem is definitely not gone. Tomorrow will make some experiments with 7.10.. installer crashes on my laptop with blank screen after xorg starts.. Have to download alternate one. ** Attachment added: "interrupts_normal_xorg.log" http://launchpadlibrarian.net/13193905/interrupts_normal_xorg.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "Interrupts with acpi=noirq" http://launchpadlibrarian.net/13193609/interrupts_acpi_noirq.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "powertop.log" http://launchpadlibrarian.net/13193341/powertop.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Some further investigation. Resetting bios to it's defaults was a good idea.. Don't know what exacly was changed but it improved many things.. Amount of wakeups without any special kernel parameters is quite low after that. I've even managed to get under 16W boundary and made 15,4W with full working desktop, wifi on but hdd off (hdparm -B 120 /dev/sdb - which is not good, but why not for testing). Here are some results - with acpi=noirq and without it (after bios settings reset). ** Attachment added: "interrupts.log" http://launchpadlibrarian.net/13192147/interrupts.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
It's quite new machine, manufactured in february this year. Maybe there were some minor changes in architeture without noticing anynone.. My model is 7664-RWU - (its specs - http://www-307.ibm.com/pc/support/site.wss/quickPath.do?quickPathEntry=7664RWU + 2g ram more) Bios update was made due to.. big amount of wakeups, and fan working on and on with ac plugged in.. This fan issue still occurs but after 3 weeks i'm used to it.. Let's try to reset bios settings, but AFAIK the only changed thing was support for VT couse I'm using it quite often, and it is not enabled by default (strange.. ) I didn't installed any older ubuntus here.. No idea about that, but will try to set up 7.10 on external usb disk for some testing.. Little bit similar hardware (but older) - http://www.klabs.be/~fpiat/linux/debian/Etch_on_Thinkpad_T61.html with 1M interrupts on one core vs 7M I have right now.. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Barteq, This hardware issue is most curious. I am afraid I am going to ask some more questions. I've seen reports of Ubuntu working fine on ThinkPad T61's before, so I am a little perplexed by this not working well on your laptop - perhaps it's the specific model of T61 that is causing problems. What is the exact model of your machine? Perhaps you may find users of that same machine on the Ubuntu forums where their machine is working correctly just to help verify the issue is perhaps specific to your machine and not generally T61's of your variety. It seems very strange to me that with ACPI irq configuration you see so many interrupts, yet without ACPI irq configuration the machine is behaves more "normally" in a single user state. I am afraid I am not an expert on specific ACPI issues. Is it possible to revert back to the original BIOS settings to see if this makes the laptop work correctly in the normal ACPI boot mode? Was there any specific reason for you upgrading the BIOS when you first got the laptop? Do you see the same problem on older kernels or installations of Ubuntu? Colin -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "acpi.tar.bz2" http://launchpadlibrarian.net/13170540/acpi.tar.bz2 -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "dmidecode.log" http://launchpadlibrarian.net/13170465/dmidecode.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Colin. BIOS upgrade was the very first thing I've made just after buing new machine, so I've got a newest one. As was said - I'm not able to fully boot up computer. Xorg is crashing with strange nvidia driver errors. With nv or vesa driver screen is full of random green bars from top up to the center, and then there is 1/4 of screen filled of actual image, but don't have to say that it is unusable at all. Without Xorg running on nvidia binary drivers i've got no ability to check power results. This drivers have 'powermizer' feature to downclock GPU, so on opensource drivers power consumption is even 5 or 6 Watts more.. Of course I'll try once more.. ACPI debugging info will come in next few minutes. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Also, it may be worth consulting the following page for BIOS upgrades: http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-67989#changes -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Barteq, It appears that there may be some ACPI problems here with the IRQ setup - booting with acpi=noirq definitely shows a far quieter system with only a few hundred IRQs occurring over the 10 second sample periods. I suggest now fulling booting your system using "acpi=noirq" and see if this improves the powertop interrupt and wakeup events. We may need to start looking at the ACPI DSTD - c.f. https://wiki.ubuntu.com/DebuggingACPI. In these cases one generally needs to dump the DSTD, decompile it and see if it's incorrect. Then fix it, recompile it and load it at boot time. Let me know what the fully booted system's activity looks like using powertop and the acpi=noirq boot options. Colin -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "Powertop result - usb modules unloaded + acpi=noirq" http://launchpadlibrarian.net/13163651/powertop_acpi_noirq_nousb.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "dmesg_acpi_noirq.log" http://launchpadlibrarian.net/13163647/dmesg_acpi_noirq.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Colin. After adding acpi=noirq results are quite suprising. 1 digit wakeups from idle in powertop is very good result, but there is no way to get into Xorg with this settings. Nvidia drivers shows strange errors. Please also look on dmesg. There is some kernel debug info.. Thanks, Barteq ** Attachment added: "interrupts_acpi_noirq.log" http://launchpadlibrarian.net/13163631/interrupts_acpi_noirq.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi colin. After adding acpi=noirq results are quite suprising. 1 digit wakeups from idle in powertop is very good result, but there is no way to get into Xorg with this settings. Nvidia drivers shows strange errors. Please also look on dmesg. There is some kernel debug info.. Thanks, Barteq ** Attachment added: "interrupts_acpi_noirq.log" http://launchpadlibrarian.net/13163629/interrupts_acpi_noirq.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Barteq, ..just to add, here are the deltas of IRQ's on your system from the last set of /proc/interrupts capture from your data.. showing a worryingly high IRQ 0 hit. CPU0 CPU1 0: 23573 23612 IO-APIC-edge timer 1: 558 562 IO-APIC-edge i8042 8: 0 0IO-APIC-edge rtc 9:94 95IO-APIC-fasteoi acpi 12: 0 0IO-APIC-edge i8042 14: 0 0IO-APIC-edge libata 15: 0 0IO-APIC-edge libata 16: 0 0IO-APIC-fasteoi uhci_hcd:usb3 17: 0 0IO-APIC-fasteoi uhci_hcd:usb1 18: 0 0IO-APIC-fasteoi uhci_hcd:usb2 19: 0 0IO-APIC-fasteoi ehci_hcd:usb6 22: 0 0IO-APIC-fasteoi uhci_hcd:usb5 23: 0 2IO-APIC-fasteoi ehci_hcd:usb7 217: 2090 2047PCI-MSI-edge ahci NMI: 00 Non-maskable interrupts LOC:13271 12598Local timer interrupts RES:12201 11276Rescheduling interrupts CAL: 146 function call interrupts TLB: 65 61 TLB shootdowns TRM:0 0 Thermal event interrupts SPU:0 0 Spurious interrupts ERR:0 MIS: 0 and lspci shows that the following devices share IRQ 0: 00:01.0 PCI bridge [0604]: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port [8086:2a01] (rev 0c) (prog-if 00 [Normal decode]) 00:1b.0 Audio device [0403]: Intel Corporation 82801H (ICH8 Family) HD Audio Controller [8086:284b] (rev 03) 00:1c.0 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI Express Port 1 [8086:283f] (rev 03) (prog-if 00 [Normal decode]) 00:1c.1 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 [8086:2841] (rev 03) (prog-if 00 [Normal decode]) 00:1c.2 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 [8086:2843] (rev 03) (prog-if 00 [Normal decode]) 00:1c.3 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 [8086:2845] (rev 03) (prog-if 00 [Normal decode]) 00:1c.4 PCI bridge [0604]: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 [8086:2847] (rev 03) (prog-if 00 [Normal decode]) 01:00.0 VGA compatible controller [0300]: nVidia Corporation Quadro NVS 140M [10de:0429] (rev a1) (prog-if 00 [VGA controller]) 03:00.0 Network controller [0280]: Intel Corporation PRO/Wireless 4965 AG or AGN Network Connection [8086:4230] (rev 61) ..one of this may be the culprit. But first I'd like to see of acpi=noirq helps first. Thanks, Colin. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Barteq IRQ 0 is really being hit excessively by something not behaving correctly. Can you try adding the boot parameter acpi=noirq and seeing if this helps reduce the excessive IRQ 0 interrupts? Thanks. Colin. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "interrupts.log" http://launchpadlibrarian.net/13154676/interrupts.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Barteq, Thanks for the information - after my initial look, I suggest a couple more bits of information to help me corner this: Can you again reboot into single user mode and do the following: cat /proc/interrupts; sleep 60; cat /proc/interrupts >> interrupts.log and repeat this about 5 times so I get an idea of interrupt activity on your system and of course attach the log file into this bug report. Many thanks Colin. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "version.log" http://launchpadlibrarian.net/13151397/version.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "uname-a.log" http://launchpadlibrarian.net/13151392/uname-a.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "powertop.log" http://launchpadlibrarian.net/13151389/powertop.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "lspci-vvnn.log" http://launchpadlibrarian.net/13151384/lspci-vvnn.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Colin. Thanks for reply. Here you are things you've asked me about. There was a little glitch on single user mode - there are no C or P states in powertop... Please also notice that these 50k wakeups occurs randomly, usually after some time. ** Attachment added: "dmesg.log" http://launchpadlibrarian.net/13151378/dmesg.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi Barteq, A couple of things: 1. can you please attach the following information so that we can look at this problem for your machine and configuration in more detail: * uname -a > uname-a.log * cat /proc/version_signature > version.log * dmesg > dmesg.log * sudo lspci -vvnn > lspci-vvnn.log 2. Also, can you boot your machine into single user mode by editing the boot line in grub - press e to edit at boot time in grub - and change kernel /boot/vmlinuz-2.6.24-15-generic root=UUID=. ro quiet splash to kernel /boot/vmlinuz-2.6.24-15-generic root=UUID=. ro S and at the recovery menu select 'drop to root shell prompt' and run powertop in single user mode to see if the system behaves differently than in multi-user mode when idle and let us know the results. thank you. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
OK, Thanks for the additional information. Will re-examine this mode of the problem. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
@Colin King It isn't made by any kind of software.. It's a pure kernel/hardware issue.. Please look here http://www.bughost.org/pipermail/power/2008-March/001327.html I've subbmited this problem on powertop mailing list, but there are no conclusions.. The only thing that was noticed is that I have about 20k spooky wakeups without ANY software running on init 1 with all unloadable modules removed... Please take a look exactly here - http://www.bughost.org/pipermail/power/2008-March/001327.html No software running, no modules and only c2 state and 26 Watts!!! It's horrible. Of course sometimes there are no stragne wakeups, sometimes there is plenty of these... For example now I have 'only' 30584 wakeups from idle... (2.6.24-15-generic) -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
It very sad turnout. There was no rescheduling in earlier kernels (feisty, gutsy) and minimal achievable power consumption was 2W lower than now. I could go down to about 12W on idle on my laptop. With current hardy I couldn't get lower tha 14.3W, even with SATA link powermanagement on, with tickless, jiffy rounding and all other imrovements. This rescheduling issue appear to kill all gains from changes in kernel since feisty. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
And thank you very much Colin King for taking a serious look into this matter ! -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
OK, but how about the load oscillating between two cores (not two cores running simultaneously splitting the load at lower C/P state - but instad one core at full steam while the other one is idle - then the same load swapping to the other core with the first one nearly idle and so on... It is not really balancing the load correctly (evenly?) i suspect? If this phenomena is intentional, then it is ok i guess...but i am not yet fully convinced. If there really is nothing wrong here, then i guess we have to pay the high temp/power usage/short battery life penalty for using Linux...? -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Oh.. one more thing to add: When running PowerTop, be sure to give it several minutes run-in before believing the power consumption figures. I've noticed it only seems to give me believable power consumption figures after about 10 minutes of use - its first estimates are quite wildly out but get better over time - in a kind of asymptotic manner. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi, I will try to draw some clarity on this issue with respect to the rescheduling interrupts issue. I've been looking at various scheduler patches upstream and been devoting time to try to corner this issue. >From my analysis, some level of rescheduling interrupts due to IPI events will occur on multi core machines to try and spread load across available cores. The scheduler will try and get full utilization across as many cores rather than let one core be so overloaded that it moves into higher P states. The rule of thumb is that it is better to have all the processes spread across lots of available cores running in low P states than one core running at a high P state. I've looked at one scenario quite deeply. For example, with an idle system and amarok playing in the background one can see several hundred rescheduling interrupts, which superficially looks worrying - surely that's a lot of activity for an nearly idle system one may conclude. However, the reality is that there are hundreds of wakeups per second occurring and the scheduler is trying to keep the cores in the lowest C3 state as much as possible. For example, upstream patch 33b0c4217dcd67b788318c3192a2912b530e4eef superficially looks like a possible solution to reduce the scheduler over zealously causing rescheduling interrupts. After experimenting with this (and other patches too), one can observe that a reduction in rescheduling interrupts causes an overall increase residency in the C0 state and decrease in the low power C3 state - and this consumes more power overall. For example, with an "idle" system just running Amarok playing a 128Kbit/s mp3 full screen with PowerTop 1.9 monitoring the system activity, I get: Patched scheduler, 2.6.24-14: Rescheduling Interrupts/Sec: ~210-220 C0 residency 37% C1 ""0% C2 ""0% C3 "" 63% Unpatched scheduler, 2.6.24-14 Rescheduling Interrupts/Sec:~240-250 C0 residency23% C1 ""0% C2 ""0% C3 "" 77% And a 3 Watts more power consumed with the patched kernel that tries to reduced the "Rescheduling Interrupts". A lot of these "Rescheduling Interrupts" occur when one or more processes are tightly coupled, for example, Amarok updating it's graphics and X rendering them. With fairly idle system one will see IPI events (showing up as Rescheduling Interrupts) as one core triggers another to wake up, do something, and then it falls asleep again. I am fairly confident that a lot of the IPI events are because there are a lot of wakeups occurring in application space and one is now able to see this under PowerTop manifest with the new kernel because of the "alarming" level of Resheduling Interrupts. However, I do not believe the "Rescheduling Interrupts" is the problem - I think this is a distraction as it looks alarming - but in fact the scheduler is doing it's best when faced with a lot of wakeups from user space processes. Barteq above has stated that he is seeing ~50K wakeup/sec and PowerTop is reporting ~2600 Rescheduling Interrupts/second and the system appears to be 97.7% in the lowest 800Mhz state consuming ~23 Watts. 50K wakeups/sec is not good - and most probably coming from the applications being run, however from the PowerTop data it is perplexing to see what the offending process is. Perhaps culling applications one by one and observing which one is causing all these wakeups is the next step in finding a rogue process that is causing the extra activity. My current conclusion is do not concern oneself too much with the high levels of Rescheduling Interrupts but we need to focus on what is causing all the extraneous wakeup events. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi, I will try to draw some clarity on this issue with respect to the rescheduling interrupts issue. I've been looking at various scheduler patches upstream and been devoting time to try to corner this issue. >From my analysis, some level of rescheduling interrupts due to IPI events will occur on multi core machines to try and spread load across available cores. The scheduler will try and get full utilization across as many cores rather than let one core be so overloaded that it moves into higher P states. The rule of thumb is that it is better to have all the processes spread across lots of available cores running in low P states than one core running at a high P state. I've looked at one scenario quite deeply. For example, with an idle system and amarok playing in the background one can see several hundred rescheduling interrupts, which superficially looks worrying - surely that's a lot of activity for an nearly idle system one may conclude. However, the reality is that there are hundreds of wakeups per second occurring and the scheduler is trying to keep the cores in the lowest C3 state as much as possible. For example, upstream patch 33b0c4217dcd67b788318c3192a2912b530e4eef superficially looks like a possible solution to reduce the scheduler over zealously causing rescheduling interrupts. After experimenting with this (and other patches too), one can observe that a reduction in rescheduling interrupts causes an overall increase residency in the C0 state and decrease in the low power C3 state - and this consumes more power overall. For example, with an "idle" system just running Amarok playing a 128Kbit/s mp3 full screen with PowerTop 1.9 monitoring the system activity, I get: Patched scheduler, 2.6.24-14: Rescheduling Interrupts/Sec: ~210-220 C0 residency 37% C1 ""0% C2 ""0% C3 "" 63% Unpatched scheduler, 2.6.24-14 Rescheduling Interrupts/Sec:~240-250 C0 residency23% C1 ""0% C2 ""0% C3 "" 77% And a 3 Watts more power consumed with the patched kernel that tries to reduced the "Rescheduling Interrupts". A lot of these "Rescheduling Interrupts" occur when one or more processes are tightly coupled, for example, Amarok updating it's graphics and X rendering them. With fairly idle system one will see IPI events (showing up as Rescheduling Interrupts) as one core triggers another to wake up, do something, and then it falls asleep again. I am fairly confident that a lot of the IPI events are because there are a lot of wakeups occurring in application space and one is now able to see this under PowerTop manifest with the new kernel because of the "alarming" level of Resheduling Interrupts. However, I do not believe the "Rescheduling Interrupts" is the problem - I think this is a distraction as it looks alarming - but in fact the scheduler is doing it's best when faced with a lot of wakeups from user space processes. Barteq above has stated that he is seeing ~50K wakeup/sec and PowerTop is reporting ~2600 Rescheduling Interrupts/second and the system appears to be 97.7% in the lowest 800Mhz state consuming ~23 Watts. 50K wakeups/sec is not good - and most probably coming from the applications being run, however from the PowerTop data it is perplexing to see what the offending process is. Perhaps culling applications one by one and observing which one is causing all these wakeups is the next step in finding a rogue process that is causing the extra activity. My current conclusion is do not concern oneself too much with the high levels of Rescheduling Interrupts but we need to focus on what is causing all the extraneous wakeup events. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Oh, I understand, so it is not 'critical', if you are considering ubuntu as a server OS. However, if it is to be used on notebooks, then burning battery when it's not needed, actually reducing battery's life to 1/2 or 2/3 should be considered a very serious issue. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
I'm afraid that critical is reserved for serious things like data loss or security issues. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Why is this bug marked as 'medium' importance? It looks like everybody with a notebook with more than 1 core is affected. I guess this has to be marked critical... Can you (the owner of the bug) please change this? Or is there a reason to leave it with lower importance? -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
I'm having the same issue on my Thinkpad x60 tablet. kernel IPI is taking about 53% of wakeups with rescheduling interrupts. Ugh. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
According to http://www.bughost.org/pipermail/power/2007-December/001189.html the problem will disapear if the jiffie-rounding patch is applied. Lets get it tested! -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
It seems to me that it has something to do with it. My HP nc8430 laptop is too warm to be held on my lap with Hardy. The fan is constantly on and quite loud, although not on maximum blast. It seems also that the processor is "oscillating" tasks between the cores constantly (even when the computer is idle. Maybe another issue? -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
I'm experiencing the same issue on my dell xps m1330 and the workaround of disabling smp in bios seems to work for me as well. Since Hardy beta (x86_64) I'm also noticing a great increase in the fan activity despite the bios version having been the same since Gutsy. Do you think this bug is the cause of the fan behaviour? -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Changed in: linux (Ubuntu) Assignee: Alessio Igor Bogani (abogani) => Colin King (colin-king) -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Changed in: linux (Ubuntu) Assignee: Colin King (colin-king) => Alessio Igor Bogani (abogani) -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Try switching back to 2.6.24-10-generic or 2.6.24-8-generic, as I also noticed that -12 uses more power. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
It's getting massive. Number of wakeups goes up to 50k Now, my laptop is useleess. Being totally idle with Wifi turned on and backlight on the lowest level, laptop consumes 25 Watts (!) of energy, instead of about ~16W which was noticed on previous distribution (gutsy). It's close to 10W more and battery life dropped from 3,5 hours to 1,5 or less. It's a KEY thing if you are using linux on laptop. 2.6.24-12-generic, newest hardy beta with all patches applied. Powertop report: PowerTOP 1.9(C) 2007 Intel Corporation Collecting data for 15 seconds CnAvg residency C0 (cpu running)(41,8%) C10,0ms ( 0,0%) C20,0ms (46,2%) C30,0ms (11,9%) P-states (frequencies) 2,41 Ghz 2,3% 2,40 Ghz 0,0% 2,00 Ghz 0,0% 800 Mhz97,7% Wakeups-from-idle per second : 33821,1 interval: 15,0s Power usage (ACPI estimate): 23,0W (1,8 hours) Top causes for wakeups: 93,5% (2647,5) : Rescheduling interrupts 1,7% ( 47,6): acpi 1,5% ( 41,1) opera : schedule_timeout (process_timeout) 1,5% ( 41,1): extra timer interrupt 0,7% ( 19,3): iwl4965 0,3% ( 8,0): usb_hcd_poll_rh_status (rh_timer_func) 0,2% ( 6,1): ahci 0,1% ( 3,6)gnome-terminal : schedule_timeout (process_timeout) 0,1% ( 1,8) kcryptd : blk_plug_device (blk_unplug_timeout) 0,1% ( 1,5)wpa_supplicant : schedule_timeout (process_timeout) 0,1% ( 1,5) : TLB shootdowns 0,0% ( 1,1)cpufreq-applet : schedule_timeout (process_timeout) 0,0% ( 1,0): uhci_hcd:usb5, yenta, nvidia 0,0% ( 1,0)dhcdbd : schedule_timeout (process_timeout) 0,0% ( 1,0) nm-applet : schedule_timeout (process_timeout) 0,0% ( 1,0) Xorg : nv_start_rc_timer (nv_kern_rc_timer) 0,0% ( 0,9)NetworkManager : schedule_timeout (process_timeout) 0,0% ( 0,7)sensors-applet : schedule_timeout (process_timeout) 0,0% ( 0,7)pulseaudio : schedule_timeout (process_timeout) 0,0% ( 0,7) htop : schedule_timeout (process_timeout) 0,0% ( 0,5): eth0 0,0% ( 0,5) iwl4965 : ieee80211_sta_work (ieee80211_sta_timer) 0,0% ( 0,5): neigh_table_init_no_netlink (neigh_periodic_timer) 0,0% ( 0,5)NetworkManager : e1000_intr_msi (e1000_watchdog) 0,0% ( 0,5) gnome-panel : schedule_timeout (process_timeout) 0,0% ( 0,4) : neigh_table_init_no_netlink (neigh_periodic_timer) 0,0% ( 0,3) syslogd : schedule_timeout (process_timeout) 0,0% ( 0,3) gnome-power-man : schedule_timeout (process_timeout) 0,0% ( 0,2) Xorg : do_setitimer (it_real_fn) 0,0% ( 0,2) update-notifier : schedule_timeout (process_timeout) 0,0% ( 0,1) iwl4965/0 : sta_info_start (sta_info_cleanup) 0,0% ( 0,1) operapluginclea : schedule_timeout (process_timeout) 0,0% ( 0,1): PS/2 keyboard/mouse/touchpad 0,0% ( 0,1) kcryptd : end_that_request_last (laptop_timer_fn) 0,0% ( 0,1) sm-notify : do_journal_end (delayed_work_timer_fn) 0,0% ( 0,1) : page_writeback_init (wb_timer_fn) 0,0% ( 0,1) : ndisc_dst_alloc (fib6_run_gc) 0,0% ( 0,1) gnome-volume-ma : schedule_timeout (process_timeout) Suggestion: Enable SATA ALPM link power management via: echo min_power > /sys/class/scsi_host/host0/link_power_management_policy or press the S key. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Yep, couse I've touched it some times while acquiring data. Here is powertop result without touching anything: Top causes for wakeups: 95,9% (3764,1) : Rescheduling interrupts 1,4% ( 55,5): acpi 0,8% ( 31,7): extra timer interrupt 0,4% ( 17,6): iwl4965 0,3% ( 11,2) nm-applet : schedule_timeout (process_timeout) 0,3% ( 10,1) gnome-settings- : schedule_timeout (process_timeout) 0,3% ( 10,1) opera : schedule_timeout (process_timeout) 0,2% ( 8,0): usb_hcd_poll_rh_status (rh_timer_func) 0,0% ( 1,9)gnome-terminal : schedule_timeout (process_timeout) 0,0% ( 1,9)wpa_supplicant : schedule_timeout (process_timeout) 0,0% ( 1,1)pulseaudio : schedule_timeout (process_timeout) 0,0% ( 1,0): uhci_hcd:usb3, yenta, nvidia I'm not affected by bug #148205 . I've even turn on virtual machine on VBox to check it. Touchpad never crashed here. It's the last thing I would suspect of working bad, couse I'm using it every day, twice more than mouse. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
In most of cases TouchPad always on the top too, 90,7% (2086,5) : Rescheduling interrupts 2,6% ( 60,3) : PS/2 keyboard/mouse/touchpad This bug is not affected by this bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/148205 ? -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Sorry for writing response to my own post but it's technologically impossible to edit previous one. So here is my powertop while idle (with some applets running: sensors, backlight, power, cpufreq-utlis, nm- applet + opera and firefox in background) Additional ondemand governor makes my cpu jump from 800 up to 2,4 ghz every 2 seconds on total idle state. Just after system start it looks quite nice, but after some minutes amont of unnecessary wakeups grows dramatically from 40 up to 3000. Next strange thing is acpi wakeups (why?) and extra timer interrupt. All those things clearly shows that cpu is very busy while in "top" command I've got only Xorg with 10% cpu and opera 4%. Everything else is under 1%. - PowerTOP 1.9(C) 2007 Intel Corporation Collecting data for 15 seconds CnAvg residency C0 (cpu running)(13,4%) C10,0ms ( 0,0%) C20,0ms ( 0,4%) C30,9ms (86,2%) P-states (frequencies) 2,41 Ghz 0,0% 2,40 Ghz 0,0% 1200 Mhz 2,0% 800 Mhz98,0% Wakeups-from-idle per second : 1190,9 interval: 15,0s no ACPI power usage estimate available Top causes for wakeups: 90,7% (2086,5) : Rescheduling interrupts 2,6% ( 60,3): PS/2 keyboard/mouse/touchpad 2,1% ( 47,6): acpi 1,2% ( 26,8): extra timer interrupt 0,6% ( 13,5): iwl4965 0,5% ( 11,2) nm-applet : schedule_timeout (process_timeout) 0,4% ( 10,3) gnome-settings- : schedule_timeout (process_timeout) 0,4% ( 10,0) cpufreq-selecto : cpufreq_governor_dbs (delayed_work_timer_fn) 0,4% ( 9,2) opera : schedule_timeout (process_timeout) 0,3% ( 8,0): usb_hcd_poll_rh_status (rh_timer_func) 0,1% ( 1,8)wpa_supplicant : schedule_timeout (process_timeout) 0,0% ( 1,1)NetworkManager : schedule_timeout (process_timeout) 0,0% ( 1,1)pulseaudio : schedule_timeout (process_timeout) 0,0% ( 1,0): uhci_hcd:usb3, yenta, nvidia 0,0% ( 1,0)cpufreq-applet : schedule_timeout (process_timeout) 0,0% ( 1,0) Xorg : nv_start_rc_timer (nv_kern_rc_timer) 0,0% ( 1,0)dhcdbd : schedule_timeout (process_timeout) 0,0% ( 0,9) Xorg : do_setitimer (it_real_fn) 0,0% ( 0,9) Xorg : schedule_timeout (process_timeout) 0,0% ( 0,7)sensors-applet : schedule_timeout (process_timeout) 0,0% ( 0,7) : neigh_table_init_no_netlink (neigh_periodic_timer) 0,0% ( 0,7) gnome-screensav : schedule_timeout (process_timeout) 0,0% ( 0,5): neigh_table_init_no_netlink (neigh_periodic_timer) 0,0% ( 0,5): eth0 0,0% ( 0,5): ahci 0,0% ( 0,5) iwl4965 : ieee80211_sta_work (ieee80211_sta_timer) 0,0% ( 0,5)NetworkManager : e1000_intr_msi (e1000_watchdog) 0,0% ( 0,5) gnome-panel : schedule_timeout (process_timeout) 0,0% ( 0,4)gnome-terminal : schedule_timeout (process_timeout) 0,0% ( 0,4) firefox : futex_wait (hrtimer_wakeup) 0,0% ( 0,3)kcryptd_io : blk_plug_device (blk_unplug_timeout) 0,0% ( 0,3) gnome-power-man : schedule_timeout (process_timeout) 0,0% ( 0,2) : TLB shootdowns 0,0% ( 0,2) operapluginclea : schedule_timeout (process_timeout) 0,0% ( 0,2) update-notifier : schedule_timeout (process_timeout) 0,0% ( 0,1) iwl4965/0 : sta_info_start (sta_info_cleanup) 0,0% ( 0,1) metacity : schedule_timeout (process_timeout) 0,0% ( 0,1) : inet_twsk_schedule (inet_twdr_hangman) 0,0% ( 0,1) : page_writeback_init (wb_timer_fn) 0,0% ( 0,1) kcryptd : blk_plug_device (blk_unplug_timeout) 0,0% ( 0,1) : ip_rt_init (delayed_work_timer_fn) 0,0% ( 0,1) ksoftirqd/0 : ndisc_dst_alloc (fib6_run_gc) 0,0% ( 0,1) gnome-volume-ma : schedule_timeout (process_timeout) -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
same here on 2.6.24-12-generic... Rescheduling interrupts differs from minimum 10 wakeups up to 3000. About taking cpu offline please read here at the very bottom - http://www.lesswatts.org/tips/misc.php It actually makes power consumption bigger. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
I get this on Alpha 6, cpu (T/200) is constantly staying over 50% of time in c0 state pecause of these Kernel IPI Rescheduling interrupts. What is interesting is that it starts when using Nautilus : checking the filesystem - properties : the contents (and size) keep getting larger and larger all the time! Could be related to this, but is a separate bug by itself? -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Changed in: linux (Ubuntu) Assignee: Ubuntu Kernel Team (ubuntu-kernel-team) => Colin King (colin-king) Status: Triaged => In Progress -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Changed in: linux (Ubuntu) Assignee: (unassigned) => Ubuntu Kernel Team (ubuntu-kernel-team) Status: New => Triaged -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Being bold. ** Changed in: linux (Ubuntu) Status: Fix Released => New -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
same here: Dell D630 Core2 Duo 2 GHz with hardy alpha 6 and kernel 2.6.24-12.20-i386 Wakeups-from-idle per second : 5426,0 interval: 3,0s Power usage (5 minute ACPI estimate) : 0,0 W (1602,1 hours left) Top causes for wakeups: 33,9% (155,3) : Rescheduling interrupts 14,1% ( 64,7): extra timer interrupt 13,6% ( 62,3): [EMAIL PROTECTED]::00:02.0 8,7% ( 39,7) USB device 3-1 : USB-PS/2 Optical Mouse (Logitech) 8,6% ( 39,3): uhci_hcd:usb1, uhci_hcd:usb3, ehci_hcd:usb7 4,3% ( 19,7): iwl3945 2,6% ( 12,0): usb_hcd_poll_rh_status (rh_timer_func) 2,5% ( 11,3) geyes_applet2 : schedule_timeout (process_timeout) 2,2% ( 10,0) cpufreq-selecto : cpufreq_governor_dbs (delayed_work_timer_fn) turning off one core with echo 0 > /sys/devices/system/cpu/cpu1/online completely changes the things: Wakeups-from-idle per second : 192,3interval: 3,0s Power usage (5 minute ACPI estimate) : 0,0 W (1969,8 hours left) Top causes for wakeups: 25,6% ( 93,0): [EMAIL PROTECTED]::00:02.0 22,8% ( 83,0) USB device 3-1 : USB-PS/2 Optical Mouse (Logitech) 22,7% ( 82,3): uhci_hcd:usb1, uhci_hcd:usb3, ehci_hcd:usb7 5,4% ( 19,7): iwl3945 5,3% ( 19,3) compiz.real : schedule_timeout (process_timeout) 3,3% ( 12,0): usb_hcd_poll_rh_status (rh_timer_func) 2,9% ( 10,7) geyes_applet2 : schedule_timeout (process_timeout) 2,8% ( 10,0) cpufreq-selecto : cpufreq_governor_dbs (delayed_work_timer_fn) that's an extreme difference! -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Same here using : Intel core 2 duo T5200 Linux clbr 2.6.24-11-generic #1 SMP Fri Feb 29 22:08:31 UTC 2008 i686 GNU/Linux PowerTOP version 1.9 (C) 2007 Intel Corporation CnAvg residency P-states (frequencies) C0 (cpu running)(12.4%) 1.60 Ghz 1.7% C10.0ms ( 0.0%) 1333 Mhz 0.0% C20.4ms ( 1.1%) 1067 Mhz 0.0% C31.5ms (86.6%) 800 Mhz98.3% Wakeups-from-idle per second : 609.8interval: 5.0s no ACPI power usage estimate available Top causes for wakeups: 48.5% (448.8) : Rescheduling interrupts 28.3% (261.6): PS/2 keyboard/mouse/touchpad 4.8% ( 44.0): HDA Intel 4.2% ( 38.8): extra timer interrupt 3.3% ( 30.8): iwl3945 1.8% ( 16.8) totem : schedule_timeout (process_timeout) -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
I have only running at this time firefox with one Tab and totem playing some MP4 audiobook`s -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
I have the same problem. I use a macbook core duo first generation. The kernel 2.6.24-8.14 uses a lot of power, powertop shows " : Rescheduling interrupts " doing ~300/500 wakeups on idle. When not idle it goes up to 6000 - 1 wakeups There is also a usb device 4-1 that makes 100 wakeups without reason (the gutsy kernel does not have these problems) Just tell me what I need to produce, it won't be a problem. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
This is still/is again a problem with 2.6.24-11.17. The system is essentially idle, but I get 400-600 wakeups per second thanks to "Rescheduling interrupts". See http://lkml.org/lkml/2008/1/21/339 for further analysis. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
With 2.4.24.8 the situation improves again: 36,5% ( 69,0): [EMAIL PROTECTED]::00:02.0 16,0% ( 30,2) : Rescheduling interrupts 15,9% ( 30,0) Xorg : schedule_timeout (process_timeout) 5,8% ( 11,0) /usr/bin/condui : schedule_timeout (process_timeout) 4,3% ( 8,2): usb_hcd_poll_rh_status (rh_timer_func) 3,7% ( 7,0) compiz.real : schedule_timeout (process_timeout) 3,3% ( 6,3): extra timer interrupt 2,6% ( 4,9) conduit.real : schedule_timeout (process_timeout) 1,5% ( 2,8) trackerd : schedule_timeout (process_timeout) 0,9% ( 1,7)gnome-terminal : schedule_timeout (process_timeout) 0,8% ( 1,6) xfsbufd : schedule_timeout (process_timeout) 0,6% ( 1,1) /usr/share/reve : schedule_timeout (process_timeout) 0,5% ( 1,0): libata, b43 0,5% ( 1,0) nm-applet : schedule_timeout (process_timeout) 0,5% ( 1,0) netspeed_applet : schedule_timeout (process_timeout) 0,5% ( 1,0)NetworkManager : tg3_open (tg3_timer) 0,5% ( 1,0)dhcdbd : schedule_timeout (process_timeout) The total count is still crazy, but looking into the list looks much better, ~160 wakeups per second while idle (with GNOME open with system monitor and other applets at the gnome-panel). -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
>Guillermo Perez wrote: > >I forgot to say that this is on a Dell D830. And the battery runtime has >improved a lot anyway from gutsy -> hardy >(from 3.5 hours to almost 5 hours!) With the tickless kernel setting (CONFIG_NO_HZ) being set in 2.4.24.8, one should also see (small) power savings because of less wakeup ticks per second. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Ubuntu-2.6.24-8.13 ** Changed in: linux (Ubuntu) Assignee: Colin King (colin-king) => (unassigned) Status: Fix Committed => Fix Released -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Its possible that the CPU does not sleep properly with one CPU offline ( Just a thought ). -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
On Thursday 14 February 2008 20:58:21 Guillermo Pérez wrote: > And I have noticed that the counter is clearly broken. The total says 3081 > but summing-up the wakeups from the list should be closer to 430. Kernel > IPI is the top cause with 166 wakeups, 38% of the total. Why the hell says > 3081 is the total? -- I once read that powertop does not count all wake ups so the sums may diverge. However, I've also seen total wakeups be LOWER than if summed up individual ones so the numbers probably are to be taken with a big grain of salt. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
I tried to put 3100 not 31000 wakeups :) And I have noticed that the counter is clearly broken. The total says 3081 but summing-up the wakeups from the list should be closer to 430. Kernel IPI is the top cause with 166 wakeups, 38% of the total. Why the hell says 3081 is the total? -- Wakeups-from-idle per second : 3081.2 interval: 5.0s no ACPI power usage estimate available Top causes for wakeups: 38.0% (166.8) : Rescheduling interrupts 20.0% ( 87.6) firefox : schedule_timeout (process_timeout) 12.7% ( 55.8): extra timer interrupt 11.9% ( 52.4) firefox : futex_wait (hrtimer_wakeup) 4.6% ( 20.0): uhci_hcd:usb2, uhci_hcd:usb4, HDA Intel 4.6% ( 20.0) USB device 4-2 : USB-PS/2 Optical Mouse (B16_b_02) 1.8% ( 8.0): usb_hcd_poll_rh_status (rh_timer_func) 0.9% ( 3.8): libata, b43 0.7% ( 3.0) trackerd : schedule_timeout (process_timeout) 0.5% ( 2.4): eth0 0.5% ( 2.2)gnome-terminal : schedule_timeout (process_timeout) 0.4% ( 1.6) xfsbufd : schedule_timeout (process_timeout) 0.3% ( 1.2) /usr/share/reve : schedule_timeout (process_timeout) 0.3% ( 1.2) Xorg : schedule_timeout (process_timeout) 0.3% ( 1.2) netspeed_applet : schedule_timeout (process_timeout) 0.2% ( 1.0)NetworkManager : tg3_open (tg3_timer) 0.2% ( 1.0)dhcdbd : schedule_timeout (process_timeout) 0.2% ( 1.0)NetworkManager : input_open_polled_device (delayed_work_timer 0.2% ( 1.0) nm-applet : schedule_timeout (process_timeout) 0.2% ( 1.0) ntpd : do_setitimer (it_real_fn) 0.2% ( 0.8) : neigh_table_init_no_netlink (neigh_periodic_ 0.1% ( 0.6)pulseaudio : schedule_timeout (process_timeout) 0.1% ( 0.6): neigh_table_init_no_netlink (neigh_periodic_ -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
This is very strange. After disabling cpu1 the wakeups-from-idle per second drops from ~31000 to ~250, and the : Rescheduling interrupts disappears from the output of the powertop. But the power consumption actually increases. It goes from 22.8W while idling with 2 cores activated to 24.8W with only one. It should be the other way, so I dunno what is really happening. Maybe the powertop utility it's not really acurate with two cores. I forgot to say that this is on a Dell D830. And the battery runtime has improved a lot anyway from gutsy -> hardy (from 3.5 hours to almost 5 hours!) -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
If you want to totally turn off extraneous cpu cores, one can actually do the following: echo 0 > /sys/devices/system/cpu/cpu1/online This only applies for cores 1..N-1 on a N core machine, i.e. you cannot turn core 0 off. This will then turn off any "Rescheduling Interrupts" since there is only 1 core running. Let me know if it reduces your power consumption. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Enabled the CONFIG_SCHED_MC option to allow multi-core scheduling for i386, ia64 and sparc (it is already enabled for x86_64) to allow one to turn on multi core power savings by: echo 1 > /sys/devices/system/cpu/sched_mc_power_savings Although grep CONFIG_SCHED_MC /boot/config-2.6.24-5-generic does yields CONFIG_SCHED_MC=y, it seems that it isn't actually enabled. Rebuilt (2.6.24-7.13) with CONFIG_SCHED_MC enabled. When tested on i386 platform, on an "idle" dual core Centrino powertop shows a drop of "Rescheduling Interrupts" from 11% (not enabled) to ~4% (enabled), shows minor power saving improvement. ** Changed in: linux (Ubuntu) Status: Triaged => Fix Committed -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Hi, System is completly idle: [EMAIL PROTECTED]:/# grep CONFIG_SCHED_MC /boot/config-2.6.24-5-generic CONFIG_SCHED_MC=y [EMAIL PROTECTED]:~# echo 1 > /sys/devices/system/cpu/sched_mc_power_savings [EMAIL PROTECTED]:/sys/devices/system/cpu# cat sched_mc_power_savings 1 Powertop Screenshot: PowerTOP version 1.9 (C) 2007 Intel Corporation Cn Verweildauer P-States (Frequenzen) C0 (Prozessor läuft)( 7,4%) 1,81 GHz 0,0% C10,0ms ( 0,0%) 1,80 GHz 0,0% C20,0ms ( 0,4%) 1200 MHz 0,0% C31,7ms (92,2%) 800 MHz 100,0% Aufwachen pro Sekunde : 671,5 Intervall: 10,0s Stromverbrauch (nach ACPI): 17,3W (0,6 Std.) Häufigste Ursachen für das Aufwachen: 91,4% (1190,8) : Rescheduling interrupts 1,8% ( 23,1) USB Gerät 2-2.1 : Microsoft Wireless Optical Mouse .00 (Microsof 1,5% ( 18,9): extra timer interrupt 0,8% ( 10,3)wvdial : schedule_timeout (process_timeout) 0,8% ( 10,3) opera : schedule_timeout (process_timeout) 0,8% ( 10,0): ehci_work (ehci_watchdog) Seems like it does not help. Binding Opera and Xorg to the same core helps somehow for the rescheduling, but as Opera spawns own operapluginwrapper processes this is senseless. Thanks for investigating. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Enabling multi core power savings could help: echo 1 > /sys/devices/system/cpu/sched_mc_power_savings This minimize the number of cores being loaded and hopefully enable idle cores to drop into lower power states. However my tests show that the savings may be marginal. The sched_mc_power_savings setting depends on the CONFIG_SCHED_MC being enabled. Currently only the x86_64 kernels have this as default. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Changed in: linux (Ubuntu) Assignee: Ubuntu Kernel Team (ubuntu-kernel-team) => Colin King (colin-king) -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Problem persists with 2.6.24-4 Kernel. But somehow it uses less Battery... Screenshot is with 3G Data Card and Music playing, with the "old" 2.6.22 it took about 20-22W in this state... interesting... I wonder how much Battery it will take with less wakeups. "Screenshot:" PowerTOP version 1.9 (C) 2007 Intel Corporation Cn Verweildauer P-States (Frequenzen) C0 (Prozessor läuft)(11,0%) 1,81 GHz 0,0% C10,0ms ( 0,0%) 1,80 GHz 0,0% C20,0ms ( 1,0%) 1200 MHz 0,0% C31,4ms (88,0%) 800 MHz 100,0% Aufwachen pro Sekunde : 893,4 Intervall: 5,0s Stromverbrauch (nach ACPI): 17,1W (2,6 Std.) Häufigste Ursachen für das Aufwachen: 87,4% (1464,0) : Rescheduling interrupts 8,7% (146,0): extra timer interrupt 2,8% ( 47,0): uhci_hcd:usb2, uhci_hcd:usb4, HDA Intel 0,3% ( 4,8): uhci_hcd:usb1, uhci_hcd:usb3, ehci_hcd:usb7 0,3% ( 4,8) USB Gerät 7-2.1 : Microsoft Wireless Optical Mouse .00 (Microsoft) 0,1% ( 2,0): nvidia 0,1% ( 1,6) amarokapp : schedule_timeout (process_timeout) 0,0% ( 0,8): ahci 0,0% ( 0,6) : ehci_work (ehci_watchdog) 0,0% ( 0,6) opera : schedule_timeout (process_timeout) 0,0% ( 0,6) Xorg : do_setitimer (it_real_fn) 0,0% ( 0,4)wvdial : schedule_timeout (process_timeout) 0,0% ( 0,2): PS/2 keyboard/mouse/touchpad -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
On Ubuntu hardy Kernel: Linux fenix 2.6.24-4-generic #1 SMP Mon Jan 14 17:30:39 UTC 2008 i686 GNU/Linux powertop output (after following all sugerences): CnAvg residency P-states (frequencies) C0 (cpu running)(25.7%) 2.21 Ghz15.4% C10.0ms ( 0.0%) 2.21 Ghz 0.0% C20.2ms ( 0.4%) 1200 Mhz 1.2% C31.5ms (73.9%) 800 Mhz83.4% Wakeups-from-idle per second : 512.4interval: 10.0s no ACPI power usage estimate available Top causes for wakeups: 46.8% (368.7) : Rescheduling interrupts 10.6% ( 83.3): [EMAIL PROTECTED]::00:02.0 9.3% ( 73.6)pidgin : schedule_timeout (process_timeout) 7.2% ( 57.0): uhci_hcd:usb2, uhci_hcd:usb4, HDA Intel 6.5% ( 51.0) firefox-3.0 : schedule_timeout (process_timeout) 5.2% ( 41.3) firefox-3.0 : futex_wait (hrtimer_wakeup) 3.6% ( 28.0) Xorg : do_setitimer (it_real_fn) 2.7% ( 20.9) gnome-panel : schedule_timeout (process_timeout) 2.2% ( 17.4): extra timer interrupt 1.3% ( 10.2) USB device 4-2 : USB-PS/2 Optical Mouse (B16_b_02) 1.0% ( 8.0): usb_hcd_poll_rh_status (rh_timer_func) 0.9% ( 7.0) compiz.real : schedule_timeout (process_timeout) 0.4% ( 2.8) trackerd : schedule_timeout (process_timeout) 0.2% ( 1.6) xfsbufd : schedule_timeout (process_timeout) 0.2% ( 1.2) /usr/share/reve : schedule_timeout (process_timeout) 0.2% ( 1.2) nm-applet : schedule_timeout (process_timeout) 0.1% ( 1.1) netspeed_applet : schedule_timeout (process_timeout) 0.1% ( 1.0) : TLB shootdowns 0.1% ( 1.0) ntpd : do_setitimer (it_real_fn) 0.1% ( 1.0)dhcdbd : schedule_timeout (process_timeout) 0.1% ( 1.0)NetworkManager : input_open_polled_device (delayed_work_timer_fn) 0.1% ( 1.0)NetworkManager : tg3_open (tg3_timer) -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "uname-a.log" http://launchpadlibrarian.net/11455919/uname-a.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
output of powertop. forefox-3 & nvidia are the only competitors to Rescheduling interrupts for Worst Power Hog Award. battery life on this machine is down to a shocking 1.3 hours, with wireless, bluetooth and even usb turned off. CnAvg residency P-states (frequencies) C0 (cpu running)(28.2%) 1.84 Ghz 0.0% C10.0ms ( 0.0%) 1333 Mhz 0.0% C20.1ms ( 0.3%) 1000 Mhz 100.0% C31.2ms (71.4%) Wakeups-from-idle per second : 598.2interval: 10.0s Power usage (ACPI estimate): 22.4W (0.9 hours) Top causes for wakeups: 47.8% (378.3) : Rescheduling interrupts 11.0% ( 86.8) firefox-3.0 : schedule_timeout (process_timeout) 10.6% ( 83.8): extra timer interrupt 8.0% ( 63.2): nvidia 5.0% ( 39.3): PS/2 keyboard/mouse/touchpad 4.6% ( 36.7) trackerd : do_nanosleep (hrtimer_wakeup) -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "dmesg.log" http://launchpadlibrarian.net/11455922/dmesg.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "version.log" http://launchpadlibrarian.net/11455920/version.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "lspci-vvnn.log" http://launchpadlibrarian.net/11455923/lspci-vvnn.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
confirming on dell latitude d820, with a coreduo chip. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
This [1] might have some relation to this bug. [1] http://www.bughost.org/pipermail/power/2007-December/001188.html -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
Re: [Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
On Sunday 13 January 2008 21:43:41 robe wrote: > Anyone tried Kernel linux-image-2.6.24-3-generic? Yes, I have not quite as many (300-400 now) as before, but then again, I never quite reached 1000 wake ups before (more like 500-600), either. -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Anyone tried Kernel linux-image-2.6.24-3-generic? -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "uname-a.log" http://launchpadlibrarian.net/11319630/uname-a.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "version.log" http://launchpadlibrarian.net/11319632/version.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "lspci-vvnn.log" http://launchpadlibrarian.net/11319628/lspci-vvnn.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
Confirming on Dell Latitude D830 ** Attachment added: "dmesg.log" http://launchpadlibrarian.net/11319626/dmesg.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 177895] Re: Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts"
** Attachment added: "lspci-vvnn.log" http://launchpadlibrarian.net/11146862/lspci-vvnn.log -- Kernel 2.6.24-2 causing ~1000 wakeups by "Rescheduling Interrupts" https://bugs.launchpad.net/bugs/177895 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
