** Changed in: linux-2.6 (Debian)
Status: Incomplete = Fix Released
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Title:
karmic: wakeups kernel core : hrtimer_start_range_ns
** Changed in: linux
Status: Confirmed = Incomplete
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Title:
karmic: wakeups kernel core : hrtimer_start_range_ns
(tick_sched_timer)
To
This bug was filed against a series that is no longer supported and so
is being marked as Won't Fix. If this issue still exists in a supported
series, please file a new bug.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
I solved this problem on my ThinkPad X61t by shutting down and then removing
external power and battery for half an hour.
It seems the firmware for the ethernet port gets into some stuck state and
cannot be reset with warm boot or cold boot.
This problem has happened twice in sixteen months or
** Changed in: linux
Importance: Unknown = Medium
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Title:
karmic: wakeups kernel core : hrtimer_start_range_ns
(tick_sched_timer)
--
** Changed in: linux
Status: Unknown = Confirmed
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Title:
karmic: wakeups kernel core : hrtimer_start_range_ns
(tick_sched_timer)
--
** Changed in: linux-2.6 (Debian)
Status: Unknown = Incomplete
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Title:
karmic: wakeups kernel core : hrtimer_start_range_ns
** Bug watch added: Debian Bug tracker #592513
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=592513
** Also affects: linux-2.6 (Debian) via
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=592513
Importance: Unknown
Status: Unknown
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** Tags added: kernel-core kernel-needs-review
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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I just started having this same problem today, removing ubuntuone had no effect.
I'm using a ThinkPad x61 tablet with stock ubuntu lucid.
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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I am running Ubuntu 8.10 server edition with a custom 2.6.33.2 kernel on
a HP Proliant DL360 G5 server (has a Xeon E5430). Even in this case the
same problem occurs. In addition to hrtimer_start_range_ns there is also
extra timer interrupts that contribute to most part of the wakeups, the
total
Also affecting fedora 13, 32bit, kernel 2.6.33.5-124, intel gma
chipset...
Wakeups-from-idle per second : 714.1interval: 10.0s
Top causes for wakeups:
76.9% (473.4) kernel core : hrtimer_start_range_ns (tick_sched_timer)
7.5% ( 46.1) firefox : hrtimer_start_range_ns
For what it's worth, I see this in 2.6.32-gentoo-r8 as well.
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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** Also affects: linux via
http://bugzilla.kernel.org/show_bug.cgi?id=14424
Importance: Unknown
Status: Unknown
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
https://bugs.launchpad.net/bugs/373245
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I added the powertop package to this bug by mistake. Sorry for that.
** Also affects: powertop (Ubuntu)
Importance: Undecided
Status: New
** Changed in: powertop (Ubuntu)
Status: New = Invalid
--
karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
This also applies to me
Top causes for wakeups:
30.7% (223.6) kernel core : hrtimer_start_range_ns (tick_sched_timer)
14.8% (107.6) kernel IPI : Rescheduling interrupts
10.5% ( 76.1) interrupt : extra timer interrupt
10.4% ( 75.4) USB device 5-2 : USB Receiver
Have the subj. issue:
but when in pure console mode, without X only 10-20 wakeups which is acceptable
start X with either NVidia drivers or VESA cause to 100-200 wakeups
40,5% (173,6) kernel IPI : Rescheduling interrupts
23,1% ( 99,1) kernel core : hrtimer_start_range_ns
Same problem here with Karmic, kernel 2.6.31-20-generic. Battery life
decreased to 30% of that in Jaunty (1h to 20 min.).
Top causes for wakeups:
28.6% ( 44.7) kernel core : hrtimer_start_range_ns (tick_sched_timer)
13.6% ( 21.3) interrupt : extra timer interrupt
8.1% ( 12.7)
Same problem! VERY frustrating to see that in Karmic. I am on Samsung
X460 and my battery life is not where it should be. I've disabled
wireless and unloaded it's module but it did not make any difference.
Wakeups-from-idle per second : 403.2interval: 10.0s
Power usage (ACPI estimate): 16.9W
Same thing on a Asus 1005HA. Don´t know enough to say if this bug is the
cause but battery life of 4.5 hours versus 7 hours in Win XP is
frustrating...
I am using 2.6.31-17-generic.
--
karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
CnAvg residency P-states (frequencies)
C0 (cpu running)(43.6%) 1.60 Ghz 0.0%
C00.0ms ( 0.0%) 1333 Mhz 0.0%
C1 mwait 0.0ms ( 0.0%) 1067 Mhz 0.0%
C2 mwait 1.4ms ( 2.2%) 800 Mhz 100.0%
C4
Removed Ubuntu One, turned on laptop_mode, laptop_mode_tools, got
following results (this is while running Firefox and Deluge, just as in
the powertop results posted above):
CnAvg residency P-states (frequencies)
C0 (cpu running)( 7.7%) 1.60 Ghz 0.0%
So should a mainline vanilla kernel have these issues then ?
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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Same problem here, Sony VAIO laptop with Intel Core II Duo, NVIDIA
graphics (so this isn't Intel graphics related).
I'm lucky to get 45 minutes battery life, compared to 3 hours under
Windows.
Top causes for wakeups:
21.5% ( 63.2) kernel IPI : Rescheduling interrupts
21.0% ( 61.7)
Mark Greenwood: you should try to tweak power saving of your video card and,
secondarily device controlled by laptop-mode.conf.
I don't think that a few wakeups can waste 3/4 of the power of whole your
system.
--
karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
firespeaker: can you explain how you disabled hyperthreading in de
kernel. It isn't clear to me how you do that.
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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I disabled the CONFIG_SCHED_SMT option in my kernel's .config and
recompiled, installed, and rebooted.
It's possible this is the wrong option, so let me know if I should be
looking for something else.
--
karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
Thinkpad X40 also shows surprisingly many wakeups:
Top causes for wakeups:
35.7% (205.3) kernel core : hrtimer_start_range_ns (tick_sched_timer)
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
https://bugs.launchpad.net/bugs/373245
You received this bug
Both removing the wifi driver and disabling compositing seem not to
change anything significantly.
Top causes for wakeups:
38.1% (140.4) kernel core : hrtimer_start_range_ns (tick_sched_timer)
17.6% ( 64.8) interrupt : PS/2 keyboard/mouse/touchpad
11.0% ( 40.4) interrupt :
luarvik1: yes, I disabled hyperthreading in the kernel only. How did
you disable it in the BIOS?
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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I am also affected by this bug on my Dell Inspiron 640m.
Top causes for wakeups:
31.4% (170.9) kernel core : hrtimer_start_range_ns (tick_sched_timer)
23.5% (128.2) firefox : hrtimer_start_range_ns (hrtimer_wakeup)
17.1% ( 93.1) interrupt : extra timer interrupt
For what it's worth, my problems seemed to be due to the ATI chipset and
open source driver (not that the ATI one is better). With the same
distribution copied on a thinkpad W500 and using the intel chip instead
of the ATI one, I get a much better:
36.0% ( 55.0) interrupt : ahci, yenta,
What happens if you turn off your wireless card ?
Do the wakeups reduce significantly ?
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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Dell Inspirion 1520, Core2 Duo.
Kubuntu Karmic without ubuntuone, mono, couchdb, ...
Linux afbook 2.6.31-17-generic #54-Ubuntu SMP Thu Dec 10 17:01:44 UTC
2009 x86_64 GNU/Linux
Top causes for wakeups:
21,0% ( 37,5) kernel core : hrtimer_start_range_ns (tick_sched_timer)
13,3% ( 23,8)
39.2% (527.6) kernel core : hrtimer_start_range_ns (tick_sched_timer)
on a thinkpad Z61p with
(--) RADEON(0): Chipset: ATI Mobility FireGL V5200 (ChipID = 0x71c4)
on 2.6.31.6
I do not have ubuntuone or couchdb, but do have karmic.
if I turn off everything I can, I can only get down to 20W or
Removing just ubuntuone I'm down to 25-30 wakeups/s. Removing couchdb
after that however does not bring any further improvement.
--
karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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I'm having the same problem :(
Linux basil 2.6.31-15-generic #50-Ubuntu SMP Tue Nov 10 14:53:52 UTC 2009
x86_64 GNU/Linux
AMD 4850e
gigabyte ga-ma78gm-s2h motherboard
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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You received
Same here.
Removing Ubuntu One seems to solve it.
I suggest we change this into an Ubuntu One bug.
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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I suspected it was the mono libraries. Did you also remove the Tomboy
~(which uses mono)?
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I did not remove Tomboy.
In fact, now I tested it, I can confirm the number of wakeups does not increase
when I open it.
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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You received this bug notification because you are a
kk 9.10, kernel 2.6.31-14 on an hp mini 311 netbook had this problem.
Removing Ubuntu One client and related libraries seems to have solved it
for me as well.
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
https://bugs.launchpad.net/bugs/373245
You received this bug
I have kernel 2.6.31-15 and have a sony vaio ns11m, I have the same
problem
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Same problem.
Using karmic with kernel 2.6.32-rc7 on a macbook pro 5,5
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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Same problem here. (Karmic, Linux 2.6.31-15)
Lenovo T60p.
Seems SMP related.
I think it is really important this gets fixed.
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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Again, same problem ThinkPad T60, Ubuntu 9.10, 2.6.31 kernel. Previous
version/kernel behaved REALLY better
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
https://bugs.launchpad.net/bugs/373245
You received this bug notification because you are a member of Ubuntu
Have you tried to uninstall Ubuntu One with Mono libraries, the problem
is that Powertop does not show sometimes what causes the ticks other
than kernel. For me, it was solved by removing clutter.
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
It is somewhat dissapointing that this bug seems to get little attention
from the kernel devs so far.. I'm affected too, ubuntu 9.10 with stock
kernel on toshiba nb 200
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
https://bugs.launchpad.net/bugs/373245
You
I don't have mono or couchdb or ubuntuone installed but was still
experiencing the problem. With only 1 cpu enabled (in the bios) and my
wifi turned off i was able to sigificantly reduce the wake ups.
On Sat, Oct 24, 2009 at 3:33 PM, luarvik1 mar...@tuvikene.ee wrote:
I found that the problem
I found that the problem disappeared when I removed the Mono
applications/libraries, Ubuntuone, couchDB
And I am not running saned, rsync, speech-dispatcher in /etc/rc2.d/
(CouchDB is uninstalled now)
I still do not know which of these caused the problem.
Anyway, the battery time is now over 6
This does seem to be SMP related. I disabled one of my cores on the X200
and dramatically reduced the number of wakeups. I can get down to around
7.3 watts now which is fantastic.
--
karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
https://bugs.launchpad.net/bugs/373245
Reported to bugzilla.kernel.org as bug #14424.
The bug exists also with mainline vanilla kernel 2.6.32-999-generic
#200910171000 SMP Sat Oct 17 09:56:20 UTC 2009 i686 GNU/Linux.
Please help to solve this by commenting at
http://bugzilla.kernel.org/show_bug.cgi?id=14424, especially if you have
I disabled hyperthreading in my 2.6.31 kernel on my N270 and still get
around 200 wakeups per second (usually anywhere from 100 to 300) from
hrtimer_start_range_ns (tick_sched_timer).
--
karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
firespeaker: did you disable it in kernel? It was solved for me when I
disabled it in BIOS.
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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Yes, disabling hyperthreading fixed it on my Atom-machine. Thank you so
far!
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That's interesting - what about affected users with CPUs that don't support
HyperThreading? My Lenovo X200 has an Intel P8600 which does not support HT:
http://ark.intel.com/Product.aspx?id=35568
I am consistently seeing hrtimer_start_range_ns wake-ups in the 100 - 150
per second range.
Ubuntu
My Laptop Toshiba NB205 has a N280 CPU but no bios option to disable
hyper threading. I hope this issue can get fixed instead of having this
as a workaround.
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
https://bugs.launchpad.net/bugs/373245
You received this bug
The number of wakeups is dependent on HT, when disabling Atom N280
hyperthreading, the number of hrtimer_start_range_ns (sched_timer) wakeups
falls 4-fold (from 60 - 15 per second) therefore it might be
inefficient scheduling for Atom hyperthreading in linux kernel.
--
karmic: wakeups kernel
If users here are looking for a work-around you can try to disable the
hyperthreading in your Atom based laptop and report back if this helped
--
karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
https://bugs.launchpad.net/bugs/373245
You received this bug notification
Present in ubuntu mainline kernel 2.6.31-02063101-generic
Using nVidia proprietary drivers, HP dv6500 laptop.
Top causes for wakeups:
43.2% (292.9) kernel core : hrtimer_start_range_ns (tick_sched_timer)
29.5% (200.1) interrupt : extra timer interrupt
--
karmic: wakeups kernel
I, too, have same bug. I am using UXA and
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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kernel 2.6.31-13-generic
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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** Summary changed:
- wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
+ karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
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karmic: wakeups kernel core : hrtimer_start_range_ns (tick_sched_timer)
https://bugs.launchpad.net/bugs/373245
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