Re: 2.6.10-ac12 + kernbench == oom-killer: (OSDL)

[Cliff White <cliffw@osdl.org>]

> On Tue, Feb 08, 2005 at 02:57:07PM -0800, cliff white wrote:
> 
> > Running 2.6.10-ac10 on the STP 1-CPU machines, we don't seem to be able to 
> complete
> > a kernbench run without hitting the OOM-killer. ( kernbench is multiple ker
> nel compiles,
> > of course ) Machine is 800 mhz PIII with 1GB memory. We reduce memory for s
> ome of the runs.
> > 
> > Typical results:
> > 
> > Out of Memory: Killed process 14970 (cc1).
> > -------------------------
> > It looks like some oom-related stuff went into -ac10, will try retest with 
> > -ac9 and -ac10, see what happens. Lemme know if we can do more
> 
> I am always curious to hear how things are when you set
> /proc/sys/vm/overcommit_memory to 2
> (and possibly /proc/sys/vm/overcommit_ratio to something
> appropriate).

Okay, with just vm.overcommit=2, things are still bad:
http://khack.osdl.org/stp/300854/logs/TestRunFailed.console.log.txt

Suggestion for vm.overcommit_ratio ?
Or should i repeat with later -ac ?
cliffw

-----------Some output---------------
Free pages:        8872kB (0kB HighMem)

Active:14865 inactive:4118 dirty:0 writeback:629 unstable:0 free:2218 slab:11489 mapped:32027 pagetables:13800

DMA free:1224kB min:128kB low:160kB high:192kB active:552kB inactive:196kB present:16384kB pages_scanned:401 all_unreclaimable? no

protections[]: 0 0 0

Normal free:7648kB min:1920kB low:2400kB high:2880kB active:58908kB inactive:16276kB present:245760kB pages_scanned:1395 all_unreclaimable? no

protections[]: 0 0 0

HighMem free:0kB min:128kB low:160kB high:192kB active:0kB inactive:0kB present:0kB pages_scanned:0 all_unreclaimable? no

protections[]: 0 0 0

DMA: 240*4kB 17*8kB 2*16kB 1*32kB 1*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 1224kB

Normal: 1348*4kB 46*8kB 54*16kB 6*32kB 1*64kB 0*128kB 1*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB = 7648kB

HighMem: empty

Swap cache: add 23226854, delete 23224756, find 324015/2933249, race 2549+2365

Out of Memory: Killed process 14667 (rpm).

oom-killer: gfp_mask=0xd2

DMA per-cpu:

cpu 0 hot: low 2, high 6, batch 1

cpu 0 cold: low 0, high 2, batch 1

Normal per-cpu:

cpu 0 hot: low 30, high 90, batch 15

cpu 0 cold: low 0, high 30, batch 15

HighMem per-cpu: empty

------------------
cliffw



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