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

From: Cliff White (cliffw_at_osdl.org)
Date: 02/18/05

  • Next message: Vojtech Pavlik: "Re: 2.6: drivers/input/power.c is never built" 
    To: Andries Brouwer <aebr@win.tue.nl>
Date:	Fri, 18 Feb 2005 08:55:47 -0800

    > 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

    >
    > Andries
    >
    -
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