Re: oom-killer 2.6.8.1

[Anders Saaby]

On Wednesday 18 August 2004 15:57, Gene Heskett wrote:
> On Wednesday 18 August 2004 08:55, Anders Saaby wrote:
> >Hi all,
> >
> >This is a high-volume NFS server running almost no user-space
> > applications. It serves a handfull of web server NFS clients from a
> > ~700G XFS filesystem.
> >
> >The machine has about 2.5 GB of RAM and 4G of swap (which is almost
> > not in use - i may use 5-10 MB total tops).  CONFIG_HIGHMEM and
> > CONFIG_HIGHMEM4G enabled, SMP enabled, preempt disabled.
> >
> >Today the OOM killer kicked in - it seemed that swap was almost
> > unused at the time (which is strange, as that should prevent the
> > OOM killer from kicking in).
> >
> >Relevant part of the syslog follows (syslogd was killed too
> > eventually):
> >
> >Aug 18 14:14:52 st1 kernel: oom-killer: gfp_mask=0xd0
> >Aug 18 14:14:52 st1 kernel: DMA per-cpu:
> >Aug 18 14:14:52 st1 kernel: cpu 0 hot: low 2, high 6, batch 1
> >Aug 18 14:14:52 st1 kernel: cpu 0 cold: low 0, high 2, batch 1
> >Aug 18 14:14:52 st1 kernel: cpu 1 hot: low 2, high 6, batch 1
> >Aug 18 14:14:52 st1 kernel: cpu 1 cold: low 0, high 2, batch 1
> >Aug 18 14:14:52 st1 kernel: Normal per-cpu:
> >Aug 18 14:14:52 st1 kernel: cpu 0 hot: low 32, high 96, batch 16
> >Aug 18 14:14:52 st1 kernel: cpu 0 cold: low 0, high 32, batch 16
> >Aug 18 14:14:52 st1 kernel: cpu 1 hot: low 32, high 96, batch 16
> >Aug 18 14:14:52 st1 kernel: cpu 1 cold: low 0, high 32, batch 16
> >Aug 18 14:14:52 st1 kernel: HighMem per-cpu:
> >Aug 18 14:14:52 st1 kernel: cpu 0 hot: low 32, high 96, batch 16
> >Aug 18 14:14:53 st1 kernel: cpu 0 cold: low 0, high 32, batch 16
> >Aug 18 14:14:54 st1 kernel: cpu 1 hot: low 32, high 96, batch 16
> >Aug 18 14:14:54 st1 kernel: cpu 1 cold: low 0, high 32, batch 16
> >Aug 18 14:14:54 st1 kernel:
> >Aug 18 14:14:54 st1 kernel: Free pages:      352376kB (348672kB
> > HighMem) Aug 18 14:14:54 st1 kernel: Active:18220 inactive:319911
> > dirty:12154 writeback:0 unstable:0 free:88094 slab:219644
> > mapped:3231 pagetables:121 Aug 18 14:14:54 st1 kernel: DMA
> > free:1880kB min:16kB low:32kB high:48kB active:0kB inactive:0kB
> > present:16384kB
> >Aug 18 14:14:54 st1 kernel: protections[]: 8 476 732
> >Aug 18 14:14:54 st1 kernel: Normal free:1824kB min:936kB low:1872kB
> >high:2808kB active:84kB inactive:284kB present:901120kB
> >Aug 18 14:14:54 st1 kernel: protections[]: 0 468 724
> >Aug 18 14:14:54 st1 kernel: HighMem free:348672kB min:512kB
> > low:1024kB high:1536kB active:72796kB inactive:1279360kB
> > present:1703788kB Aug 18 14:14:54 st1 kernel: protections[]: 0 0
> > 256
> >Aug 18 14:14:54 st1 kernel: DMA: 6*4kB 2*8kB 1*16kB 1*32kB 0*64kB
> > 0*128kB 1*256kB 1*512kB 1*1024kB 0*2048kB 0*4096kB = 1880kB
> >Aug 18 14:14:54 st1 kernel: Normal: 88*4kB 42*8kB 3*16kB 6*32kB
> > 2*64kB 2*128kB 0*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB = 1824kB
> >Aug 18 14:14:55 st1 kernel: HighMem: 62500*4kB 11396*8kB 409*16kB
> > 0*32kB 1*64kB 1*128kB 1*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB =
> > 348672kB Aug 18 14:14:55 st1 kernel: Swap cache: add 6433, delete
> > 6394, find 35305/35334, race 0+0
> >Aug 18 14:14:55 st1 kernel: Out of Memory: Killed process 1049
> > (rpc.statd).
> >
> >Any ideas?
> >
> >Try to disable swap?  Tune magic VM settings?  Any suggestions are
> > highly welcome.
> >
> >Thank you very much,
>
> You may be another candidate for the same thing thats troubleing me.
> Back up the log above that and look for an Oops and post that please.

No Oops :-)

/Saaby
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