[Bug 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
** Tags added: hwe-blocker -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/501715 Title: Kernel trace buffer should be cleared and size restored after profiling -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
** Changed in: ureadahead (Ubuntu Lucid) Assignee: arturm (arturm) = Tim Gardner (timg-tpi) -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
** Changed in: ureadahead (Ubuntu Lucid) Assignee: Tim Gardner (timg-tpi) = arturm (arturm) -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
** Tags added: verification-done ** Tags removed: verification-needed -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
This bug was fixed in the package ureadahead - 0.100.0-4.1.2 --- ureadahead (0.100.0-4.1.2) lucid-proposed; urgency=low * Restore buffer_size_kb upon exit, but do it _after_ the trace buffer has been read. This frees the memory consumed by the trace operation (which can be a lot). -LP: #501715 -- Tim Gardner tim.gard...@canonical.com Wed, 14 Jul 2010 11:00:54 -0600 ** Changed in: ureadahead (Ubuntu Lucid) Status: Fix Committed = Fix Released -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Tested the ureadahead deb on r2d2/c3po-amd Dell systems. The systems had X07 bios on the system. This issue was fixed with this deb package with the X07 bios. http://us.archive.ubuntu.com/ubuntu/pool/main/u/ureadahead/ureadahead_0.100.0-4.1.2_i386.deb package works -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
This bug was fixed in the package ureadahead - 0.100.0-6 --- ureadahead (0.100.0-6) maverick; urgency=low * Restore buffer_size_kb upon exit, but do it _after_ the trace buffer has been read. This frees the memory consumed by the trace operation (which can be a lot). -LP: #501715 -- Tim Gardner tim.gard...@canonical.com Thu, 22 Jul 2010 04:04:36 -0600 ** Changed in: ureadahead (Ubuntu Maverick) Status: Triaged = Fix Released -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
I think I'm receiving a similar bug where I supposedly have 0 swap space left, then get a plymouthd OoM error, then ureadaheadd OoM error. Linux ubuntu 2.6.35-8-generic-pae #13-Ubuntu SMP Wed Jul 14 04:40:11 UTC 2010 i686 GNU/Linux ureadahead: Installed: 0.100.0-5 plymouth: Installed: 0.8.2-2ubuntu3 ** Attachment added: dmesg.txt http://launchpadlibrarian.net/52035981/dmesg.txt -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Accepted ureadahead into lucid-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance! ** Changed in: ureadahead (Ubuntu Lucid) Status: Triaged = Fix Committed ** Tags removed: verification-failed ** Tags added: verification-needed -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
** Branch linked: lp:ubuntu/lucid-proposed/ureadahead -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Ureadahead is not creating pack files now. $ cat /sys/kernel/debug/tracing/buffer_size_kb 128000 $ cat /sys/kernel/debug/tracing/buffer_size_kb 1408 $ ls /var/lib/ureadahead/ debugfs I was using a custom version before, the proposed patch should have overwritten it though. Can someone else confirm that the patch is not creating pack files? -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Package: ureadahead State: installed Automatically installed: no Version: 0.100.0-4.1.1 -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
lavinog, you must upgrade to 0.100.0-4.1.2. It creates the pack here. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
For us using -proposed, it would be nice if the SRU changelogs would be a bit more descriptive so we have an idea of what changes can be expected. Something like Fixes kernel memory leak when reprofiling in this case. BTW this changelog missed the # in the bug number so it did not get linkified in Update Manager. Thanks. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Scott says this is wrong, I'll let him elaborate. ** Tags added: verification-failed ** Tags removed: verification-needed -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
I've asked pitti to reject this upload. The patch is wrong; it restores the buffer size before using any of the contents of the buffer, which will either truncate it or clear it entirely. The effect would be the same as simply never increasing the size in the first place - or worse, making all profiles come out with no files. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
As per Scott's request I removed this SRU, since it severely regresses ureadahead to the point where it entirely stops working. 2010-07-14 14:23:16 INFORemoving candidates: 2010-07-14 14:23:16 INFOureadahead 0.100.0-4.1.1 in lucid amd64 2010-07-14 14:23:16 INFOureadahead 0.100.0-4.1.1 in lucid armel 2010-07-14 14:23:16 INFOureadahead 0.100.0-4.1.1 in lucid i386 2010-07-14 14:23:16 INFOureadahead 0.100.0-4.1.1 in lucid ia64 2010-07-14 14:23:16 INFOureadahead 0.100.0-4.1.1 in lucid powerpc 2010-07-14 14:23:16 INFOureadahead 0.100.0-4.1.1 in lucid sparc 2010-07-14 14:23:16 INFORemoved-by: Martin Pitt 2010-07-14 14:23:16 INFOComment: SRU regression 2010-07-14 14:23:16 INFO6 packages successfully removed. ** Changed in: ureadahead (Ubuntu Lucid) Status: Fix Committed = Triaged -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Noted, how about this patch: ** Attachment added: Free trace memory after reading trace log http://launchpadlibrarian.net/51934423/trace.txt -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
SRU Justification: Impact: Low memory platforms suffer OOM crashes because of memory exhaustion Patch Description: Read the initial value of buffer_size_kb and restore on exit. Patch: http://launchpadlibrarian.net/51934423/trace.txt This patch has been reported by Bryan Wu to have fixed an issue on an ARM OEM platform. This bug cause some real issues on low memory ARM platforms. Scott Remnant has also concurred that the patch is correct this time. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Accepted into lucid-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance! ** Changed in: ureadahead (Ubuntu Lucid) Status: In Progress = Fix Committed ** Tags added: verification-needed -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
** Attachment added: Lucid ureadahead patch http://launchpadlibrarian.net/51784150/lucid-ureadahead.txt -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
SRU Justification Impact: Low memory platforms suffer OOM crashes because of memory exhaustion Patch Description: Read the initial value of buffer_size_kb and restore on exit. Patch: attached This patch has been reported by Bryan Wu to have fixed an issue on an ARM OEM platform. This bug cause some real issues on low memory ARM platforms. ** Also affects: ureadahead (Ubuntu Lucid) Importance: Undecided Status: New ** Also affects: ureadahead (Ubuntu Maverick) Importance: High Status: Triaged ** Changed in: ureadahead (Ubuntu Lucid) Importance: Undecided = High ** Changed in: ureadahead (Ubuntu Lucid) Status: New = In Progress ** Changed in: ureadahead (Ubuntu Lucid) Milestone: None = ubuntu-10.04.1 ** Changed in: ureadahead (Ubuntu Lucid) Assignee: (unassigned) = Tim Gardner (timg-tpi) -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Patch looks good. ACK from SRU team. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
I'm getting this. From mount. none on /var/lib/ureadahead/debugfs type debugfs (rw,relatime) However is it related to high memory usage on boot up. With just firefox and a terminal I'm getting this. free -m total used free sharedbuffers cached Mem: 2009 1034974 0 37295 -/+ buffers/cache:701 1307 Swap: 1906 0 1906 This is Lucid 64bit clean install. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Update rebooted and found the /var/lib//ureadahead/debugfs not mounted. Memory steady at 500 meg after 1 hour. Using firefox, evolution and terminal. status ureadahead ureadahead stop/waiting mount /dev/sda1 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) none on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) none on /dev type devtmpfs (rw,mode=0755) none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) none on /dev/shm type tmpfs (rw,nosuid,nodev) none on /var/run type tmpfs (rw,nosuid,mode=0755) none on /var/lock type tmpfs (rw,noexec,nosuid,nodev) none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755) /dev/sda3 on /home type ext4 (rw) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev) gvfs-fuse-daemon on /home/philcb/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=philcb) -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Hi lavinog Thanks for the proposed fix. It does appear to work, but I'm worried about unintended consequences. I can't install OSs with such bugs and hacked workarounds in them. It's a shame because Lucid seems like an otherwise fine release but for the time being I'm going to have to stick to Karmic. Hopefully it will be fixed shortly. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
This bug exists in karmic also. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Probably - however, it's not installed by default on Karmic. At least not when doing a minimal install like I do. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
lavinog, I'm commenting this bug. The other HUGE memory leak problem I was having, and thought that was connected to this bug, was confirmed and fixed (it was bug #565981). -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
I posted a upstart script that can recover the memory used after a profile: http://ubuntuforums.org/showpost.php?p=9271524postcount=9 -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Thanks lavinog for that info. This immediately cleared up about 250MB of lost memory for me. Usually my server uses about 60MB but now and then after a reboot it will use 315MB and I can't find where it's gone. Dropping caches didn't help. This bug doesn't appear to be taken seriously. Perhaps it needs to be filed in a better place where the right devs will see it? I can confirm that this bug is present on my newly created Lucid 10.4 server install and that the above echo command will fix it. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
I am sure it is taken seriously. The dev is likely tending to more important issues at the moment. The issue isn't a security issue, and it doesn't seem to cause any data loss. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
lavinog you sound like one of the creators of Windows Vista. :) I'm sorry, but as a long time Linux user, I'm somehow spoiled by the idea/reassurance that my OS is not eating parts of my RAM if there are no objective reasons for it do so. I agree that security issues and data loss problems are extremely important, but fixing a loss of 250MB of RAM is equally important for me. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
@Petar: I replied to your comment at this thread: http://ubuntuforums.org/showthread.php?t=1363165 I do not think this bug is related to your issue. I would like to help you figure out what is going on, but not here. To everyone else: The cause of the bug is known. Maybe Scott can give us some insight on when or how it will be addressed, but the forums might be a better place for discussions. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Any updates on this issue?? I know an extra 100-200mb used is nothing to those with systems with several gbs in them... But many of us use Ubuntu on lowend/modest systems. ~120mb burnt for nothing is 50% of my meager 256mb available on my laptop. For us, this bug is a show stopper. Seems strange that this was allowed to make it into Lucid. Ureadahead is great - hopefully this can be fixed with an update. Keybuk mentionned in the forums on March 20th that a fix for this bug was pending next week. Any updates on that? -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
@james79: if the issue is that you are low on memory, you can release the trace buffer with: echo 1|sudo tee /sys/kernel/debug/tracing/buffer_size_kb I wrote a init script that does this automatically after a trace. I can clean it up and post it if it will help. If the issue is that you run out of memory during boot, your only option is to disable ureadahead. Ureadahead is only useful if you have the memory for caching the files. I suspect fixing this bug would be counter productive if the goal is to change the way tracing is accomplished. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
I have the same problem about very high ram and swap usage, and the system becoming very slow. But removing ureadahead and using the Karmic 2.6.31-20 kernel didn't help, so ureadahead is not the problem in my system. For this other problem maybe bug 560859 is better. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
If it shows that you still have free memory (ram) then this probably isn't the right bug for you. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
I also want to point out that this bug only happens on a reprofile so if you're having high memory consumption all the time then that's another indicator that something else is wrong. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Yes :) that is why I said that bug 560859 is better to discuses that. Richard Luther, Petar Velkovski and others may be interested in that bug also. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
I am experiencing the same problem as Petar, after several hours the swap file starts to get heavily used despite free showing less than half my memory being used by applications and having vm.swappiness=0. I have 2G of RAM and 2.5G of swap, and the system behaves normally up until the swap partition starts to get used at which point the system becomes almost unusable. Attempting sudo swapoff -a fails for me as well. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
i had this issue on one one laptop 00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03) 00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Express Root Port (rev 03) 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02) 00:1c.2 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 3 (rev 02) 00:1d.0 USB Controller: Intel Corporation N10/ICH7 Family USB UHCI Controller #1 (rev 02) 00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02) 00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02) 00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02) 00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2) 00:1f.0 ISA bridge: Intel Corporation 82801GHM (ICH7-M DH) LPC Interface Bridge (rev 02) 00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02) 00:1f.2 RAID bus controller: Intel Corporation 82801GHM (ICH7-M DH) SATA RAID Controller (rev 02) 00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02) 01:00.0 VGA compatible controller: nVidia Corporation G71 [GeForce Go 7900 GTX] (rev a1) 02:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02) 06:07.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller 06:07.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE 1394 Host Controller 06:07.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD) 06:07.3 SD Host controller: Texas Instruments PCIxx12 SDA Standard Compliant SD Host Controller 06:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8169 Gigabit Ethernet (rev 10) I fixed it by removing ureadahead and my ram usage dropped from 800 megs at start to 400 megs. This didn't occur on my other lucid systems. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
Thanks god someone else noticed this high memory usage. I kept asking people on #ubuntu+1 and all I got was: This is normal for Linux. This high caching memory usage would be normal, if my system didn't start using the swap file once the RAM memory gets used by the caching memory. I never noticed this problem in Karmic, probably because I did a clean install and used the vanilla kernels from http://kernel.ubuntu.com /~kernel-ppa/mainline/ in the last 4 or 5 months. Previously (in Karmic) Reclaim memory function in Ailurus would reclaim almost all of the caching memory, but now it fails to do that. Something is eating the memory. This is how my computer behaves: I have 2GiB of Ram installed System monitor reports that 38% of the Memory is used by programs, 62% of Memory is in use as cash, and I have for instance 160MiB used from the swap space (and once the swap is being used, the system erformance is hit seriously). If I try: sudo swapoff -a , the swapoff process dies and the swap partition is not disabled. Why? Because there is not enough RAM memory available to transfer the data contained into the swap partition. But how can this be when 62% of it is free? 62% of 2GiB of ram is a lot more than 160MiB. I even tried uninstalling ureadahead but that doesn't help. So I'm not sure that the problem is strictly located in ureadahead. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
@Petar: I don't think this bug is your issue if uninstalling ureadahead didn't help. -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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 501715] Re: Kernel trace buffer should be cleared and size restored after profiling
** Summary changed: - ureadahead doesn't reduce tracing buffer after profile + Kernel trace buffer should be cleared and size restored after profiling ** Changed in: ureadahead (Ubuntu) Importance: Medium = High -- Kernel trace buffer should be cleared and size restored after profiling https://bugs.launchpad.net/bugs/501715 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
