Bug#304775: marked as done (kernel-source-2.6.11: OOM but swap is unused)
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From: Georg Wittenburg <georg.wittenburg@gmx.net>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: kernel-source-2.6.11: OOM but swap is unused
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Date: Fri, 15 Apr 2005 14:41:44 +0200
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Package: kernel-source-2.6.11
Version: 2.6.11-3
Severity: important
Hi!
Under normal desktop usage (KDE with Konqueror, Kontact and amaroK running) the OOM killer kicks in reproducably and kills the klauncher and kwin processes. This occurs with both kernel-image-2.6.11-1-686 and the kernel that I compiled myself to add MPPE support. However, free swap space IS available.
/var/log/syslog as follows:
Apr 15 14:06:22 vaio kernel: oom-killer: gfp_mask=0x80d2
Apr 15 14:06:23 vaio kernel: DMA per-cpu:
Apr 15 14:06:23 vaio kernel: cpu 0 hot: low 2, high 6, batch 1
Apr 15 14:06:23 vaio kernel: cpu 0 cold: low 0, high 2, batch 1
Apr 15 14:06:23 vaio kernel: Normal per-cpu:
Apr 15 14:06:23 vaio kernel: cpu 0 hot: low 28, high 84, batch 14
Apr 15 14:06:23 vaio kernel: cpu 0 cold: low 0, high 28, batch 14
Apr 15 14:06:23 vaio kernel: HighMem per-cpu: empty
Apr 15 14:06:23 vaio kernel:
Apr 15 14:06:23 vaio kernel: Free pages: 3592kB (0kB HighMem)
Apr 15 14:06:23 vaio kernel: Active:47818 inactive:1669 dirty:0 writeback:14 unstable:0 free:898 slab:3388 mapped:49377 pagetables:777
Apr 15 14:06:23 vaio kernel: DMA free:1080kB min:128kB low:160kB high:192kB active:11844kB inactive:4kB present:16384kB pages_scanned:13231 all_
unreclaimable? yes
Apr 15 14:06:23 vaio kernel: lowmem_reserve[]: 0 238 238
Apr 15 14:06:23 vaio kernel: Normal free:2512kB min:1908kB low:2384kB high:2860kB active:179428kB inactive:6672kB present:244224kB pages_scanned
:0 all_unreclaimable? no
Apr 15 14:06:23 vaio kernel: lowmem_reserve[]: 0 0 0
Apr 15 14:06:23 vaio kernel: HighMem free:0kB min:128kB low:160kB high:192kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimab
le? no
Apr 15 14:06:23 vaio kernel: lowmem_reserve[]: 0 0 0
Apr 15 14:06:23 vaio kernel: DMA: 0*4kB 1*8kB 1*16kB 1*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB 0*2048kB 0*4096kB = 1080kB
Apr 15 14:06:23 vaio kernel: Normal: 122*4kB 29*8kB 2*16kB 7*32kB 4*64kB 0*128kB 1*256kB 0*512kB 1*1024kB 0*2048kB 0*4096kB = 2512kB
Apr 15 14:06:23 vaio kernel: HighMem: empty
Apr 15 14:06:23 vaio kernel: Swap cache: add 725, delete 715, find 0/0, race 0+0
Apr 15 14:06:23 vaio kernel: Free swap = 527204kB
Apr 15 14:06:23 vaio kernel: Total swap = 530104kB
Apr 15 14:06:23 vaio kernel: Out of Memory: Killed process 7956 (klauncher).
Apr 15 14:08:01 vaio /USR/SBIN/CRON[11218]: (mail) CMD ( if [ -x /usr/lib/exim/exim3 -a -f /etc/exim/exim.conf ]; then /usr/lib/exim/exim3 -q ;
fi)
Apr 15 14:09:27 vaio kernel: oom-killer: gfp_mask=0xd0
Apr 15 14:09:28 vaio kernel: DMA per-cpu:
Apr 15 14:09:28 vaio kernel: cpu 0 hot: low 2, high 6, batch 1
Apr 15 14:09:28 vaio kernel: cpu 0 cold: low 0, high 2, batch 1
Apr 15 14:09:28 vaio kernel: Normal per-cpu:
Apr 15 14:09:28 vaio kernel: cpu 0 hot: low 28, high 84, batch 14
Apr 15 14:09:28 vaio kernel: cpu 0 cold: low 0, high 28, batch 14
Apr 15 14:09:28 vaio kernel: HighMem per-cpu: empty
Apr 15 14:09:28 vaio kernel:
Apr 15 14:09:28 vaio kernel: Free pages: 3880kB (0kB HighMem)
Apr 15 14:09:28 vaio kernel: Active:39358 inactive:10162 dirty:0 writeback:1257 unstable:0 free:970 slab:3317 mapped:48159 pagetables:750
Apr 15 14:09:28 vaio kernel: DMA free:1080kB min:128kB low:160kB high:192kB active:11868kB inactive:0kB present:16384kB pages_scanned:12192 all_
unreclaimable? yes
Apr 15 14:09:28 vaio kernel: lowmem_reserve[]: 0 238 238
Apr 15 14:09:28 vaio kernel: Normal free:2800kB min:1908kB low:2384kB high:2860kB active:145564kB inactive:40648kB present:244224kB pages_scanne
d:0 all_unreclaimable? no
Apr 15 14:09:28 vaio kernel: lowmem_reserve[]: 0 0 0
Apr 15 14:09:28 vaio kernel: HighMem free:0kB min:128kB low:160kB high:192kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimab
le? no
Apr 15 14:09:28 vaio kernel: lowmem_reserve[]: 0 0 0
Apr 15 14:09:28 vaio kernel: DMA: 0*4kB 1*8kB 1*16kB 1*32kB 0*64kB 0*128kB 0*256kB 0*512kB 1*1024kB 0*2048kB 0*4096kB = 1080kB
Apr 15 14:09:28 vaio kernel: Normal: 118*4kB 19*8kB 12*16kB 10*32kB 6*64kB 0*128kB 1*256kB 0*512kB 1*1024kB 0*2048kB 0*4096kB = 2800kB
Apr 15 14:09:28 vaio kernel: HighMem: empty
Apr 15 14:09:28 vaio kernel: Swap cache: add 2342, delete 1067, find 0/0, race 0+0
Apr 15 14:09:28 vaio kernel: Free swap = 520736kB
Apr 15 14:09:28 vaio kernel: Total swap = 530104kB
Apr 15 14:09:28 vaio kernel: Out of Memory: Killed process 7982 (kwin).
At the same time /proc/meminfo looked like this:
Fri Apr 15 14:06:12 CEST 2005
MemTotal: 255264 kB
MemFree: 7684 kB
Buffers: 860 kB
Cached: 52756 kB
SwapCached: 0 kB
Active: 192256 kB
Inactive: 1576 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 255264 kB
LowFree: 7684 kB
SwapTotal: 530104 kB
SwapFree: 527244 kB
Dirty: 496 kB
Writeback: 0 kB
Mapped: 191412 kB
Slab: 13548 kB
CommitLimit: 657736 kB
Committed_AS: 372396 kB
PageTables: 3104 kB
VmallocTotal: 770040 kB
VmallocUsed: 8592 kB
VmallocChunk: 761368 kB
Fri Apr 15 14:06:23 CEST 2005
MemTotal: 255264 kB
MemFree: 8200 kB
Buffers: 656 kB
Cached: 51520 kB
SwapCached: 40 kB
Active: 185980 kB
Inactive: 7276 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 255264 kB
LowFree: 8200 kB
SwapTotal: 530104 kB
SwapFree: 527204 kB
Dirty: 64 kB
Writeback: 0 kB
Mapped: 191608 kB
Slab: 13588 kB
CommitLimit: 657736 kB
Committed_AS: 372312 kB
PageTables: 3060 kB
VmallocTotal: 770040 kB
VmallocUsed: 8592 kB
VmallocChunk: 761368 kB
Fri Apr 15 14:06:33 CEST 2005
MemTotal: 255264 kB
MemFree: 9472 kB
Buffers: 772 kB
Cached: 51032 kB
SwapCached: 4 kB
Active: 185356 kB
Inactive: 6572 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 255264 kB
LowFree: 9472 kB
SwapTotal: 530104 kB
SwapFree: 527188 kB
Dirty: 364 kB
Writeback: 0 kB
Mapped: 190012 kB
Slab: 13604 kB
CommitLimit: 657736 kB
Committed_AS: 371360 kB
PageTables: 3060 kB
VmallocTotal: 770040 kB
VmallocUsed: 8592 kB
VmallocChunk: 761368 kB
....and for the second incident:
Fri Apr 15 14:09:13 CEST 2005
MemTotal: 255264 kB
MemFree: 3552 kB
Buffers: 2412 kB
Cached: 52912 kB
SwapCached: 0 kB
Active: 192636 kB
Inactive: 5572 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 255264 kB
LowFree: 3552 kB
SwapTotal: 530104 kB
SwapFree: 526468 kB
Dirty: 8 kB
Writeback: 56 kB
Mapped: 190124 kB
Slab: 13436 kB
CommitLimit: 657736 kB
Committed_AS: 370560 kB
PageTables: 2932 kB
VmallocTotal: 770040 kB
VmallocUsed: 8592 kB
VmallocChunk: 761368 kB
Fri Apr 15 14:09:24 CEST 2005
MemTotal: 255264 kB
MemFree: 3512 kB
Buffers: 616 kB
Cached: 50036 kB
SwapCached: 0 kB
Active: 198044 kB
Inactive: 424 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 255264 kB
LowFree: 3512 kB
SwapTotal: 530104 kB
SwapFree: 526468 kB
Dirty: 8 kB
Writeback: 0 kB
Mapped: 197340 kB
Slab: 13200 kB
CommitLimit: 657736 kB
Committed_AS: 387740 kB
PageTables: 2944 kB
VmallocTotal: 770040 kB
VmallocUsed: 8592 kB
VmallocChunk: 761368 kB
Fri Apr 15 14:09:36 CEST 2005
MemTotal: 255264 kB
MemFree: 3216 kB
Buffers: 1756 kB
Cached: 54684 kB
SwapCached: 6752 kB
Active: 168272 kB
Inactive: 30368 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 255264 kB
LowFree: 3216 kB
SwapTotal: 530104 kB
SwapFree: 508308 kB
Dirty: 176 kB
Writeback: 0 kB
Mapped: 184740 kB
Slab: 13140 kB
CommitLimit: 657736 kB
Committed_AS: 432420 kB
PageTables: 3196 kB
VmallocTotal: 770040 kB
VmallocUsed: 8592 kB
VmallocChunk: 761368 kB
This problem was definately introduced in 2.6.11. Never happen with 2.6.10.
Thanks for looking into this. Regards,
Georg
-- System Information:
Debian Release: 3.1
APT prefers testing
APT policy: (990, 'testing'), (300, 'unstable'), (200, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.10-gw2
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Versions of packages kernel-source-2.6.11 depends on:
ii binutils 2.15-5 The GNU assembler, linker and bina
ii bzip2 1.0.2-5 high-quality block-sorting file co
ii coreutils [fileutils] 5.2.1-2 The GNU core utilities
ii fileutils 5.2.1-2 The GNU file management utilities
-- no debconf information
---------------------------------------
Received: (at 304775-done) by bugs.debian.org; 6 May 2005 08:13:47 +0000
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Date: Fri, 6 May 2005 17:28:53 +1000
From: Horms <horms@debian.org>
To: Georg Wittenburg <georg.wittenburg@gmx.net>, 304775-done@bugs.debian.org
Subject: Re: Bug#304775: kernel-source-2.6.11: OOM but swap is unused
Message-ID: <20050506072851.GG13354@verge.net.au>
References: <E1DMQ8u-0007n7-00@spohr.debian.org> <[🔎] 200505040333.18436.georg.wittenburg@gmx.net>
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On Wed, May 04, 2005 at 03:33:09AM +0200, Georg Wittenburg wrote:
> Nevermind, I just noticed that I had /proc/sys/vm/swappiness set to 0 which
> apparently was OK in 2.6.10, but triggers the OOM killer in 2.6.11. Leaving
> the swappiness value at the default 60 gives you a perfectly usable system.
> Please close this bug.
Will do, thanks.
--
Horms
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