On Monday 31 October 2005 22:05, Robert Hancock wrote:
> Rob Landley wrote:
> > Under 2.6.14 (UML), I have a workload that runs with 64 megs ram and 256
> > megs swap space. It completes (albeit swapping like mad) with swappiness
> > at the default 60, but if I set it to 0 the OOM killer kicks in and the
> > script aborts.
>
> You should get some debugging output in dmesg when the OOM killer kicks
> in, can you post this?
Sure:
VFS: Mounted root (hostfs filesystem).
Adding 262136k swap on tmp/ubda. Priority:-1 extents:1 across:262136k
oom-killer: gfp_mask=0x400d2, order=0
Mem-info:
DMA per-cpu:
cpu 0 hot: low 14, high 42, batch 7 used:20
cpu 0 cold: low 0, high 14, batch 7 used:8
Normal per-cpu: empty
HighMem per-cpu: empty
Free pages: 1416kB (0kB HighMem)
Active:14014 inactive:718 dirty:1 writeback:0 unstable:0 free:354 slab:468
mapped:14722 pagetables:58
DMA free:1416kB min:1024kB low:1280kB high:1536kB active:56056kB
inactive:2872kB present:65536kB pages_scanned:26577 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
Normal free:0kB min:0kB low:0kB high:0kB active:0kB inactive:0kB present:0kB
pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
HighMem free:0kB min:128kB low:160kB high:192kB active:0kB inactive:0kB
present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0
DMA: 98*4kB 0*8kB 0*16kB 0*32kB 4*64kB 2*128kB 0*256kB 1*512kB 0*1024kB
0*2048kB 0*4096kB = 1416kB
Normal: empty
HighMem: empty
Swap cache: add 5689, delete 5485, find 583/725, race 0+0
Free swap = 255420kB
Total swap = 262136kB
Free swap: 255420kB
16384 pages of RAM
0 pages of HIGHMEM
671 reserved pages
1034 pages shared
204 pages swap cached
Out of Memory: Killed process 30055 (cc1).
Badness in handle_page_fault
at /home/landley/newbuild/firmware-build/tmpdir/linux-2.6.14/arch/um/kernel/trap_kern.c:98
08bafb10: [<0805d064>] handle_page_fault+0x1c4/0x260
08bafb50: [<0805d1a7>] segv+0xa7/0x2e0
08bafb70: [<0805e713>] setjmp_wrapper+0x83/0x90
08bafba8: [<0805e6c7>] setjmp_wrapper+0x37/0x90
08bafbd0: [<0805b1a5>] change_signals+0x65/0x90
08bafbe0: [<08060d3a>] do_ops+0x14a/0x150
08bafc10: [<0805f29f>] wait_stub_done+0x5f/0x110
08bafc40: [<0805d67c>] segv_handler+0x7c/0x90
08bafc60: [<08060fbe>] user_signal+0x3e/0x70
08bafc80: [<0805faa0>] userspace+0x180/0x220
08bafcf0: [<08060711>] fork_handler+0xc1/0xe0
System halted.
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