[Xen-bugs] [Bug 522] oom-killer: gfp_mask=0x201d2, order=

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http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=522





------- Additional Comments From dbarrera@xxxxxxxxxx  2006-02-14 19:49 -------
(In reply to comment #8)
> This seems normal behavior, 
Agree that OOM should kill offending tasks. If it is normal behavior, then I
should close the defect, but I want to be sure that it is not a problem.
> 
> How many memory do you have in domains that goes out-of-memory (seems it is 
> 256M
> but I'm not sure) ?
Yes, 256MB
> Is that a new behavior ? if yes, since when ?
OOM killing lmbench is not new behavior. However, I had not seen the traces
before. Seems like they started showing up after changeset 8758 (not sure 
though).
> 
> BTW, you forget to label which trace correspond to dom0 and domU (with there
> respective configs would be even better)
You are absolutely right.


Here's one from domU today,using changeset 8830.
oom-killer: gfp_mask=0x201d2, order=0

Call Trace: <ffffffff8012e5ec>{printk_ratelimit+21}
       <ffffffff80156506>{out_of_memory+55} 
<ffffffff80158661>{__alloc_pages+555}
       <ffffffff80159e05>{__do_page_cache_readahead+267}
<ffffffff8031a0d3>{__wait_on_bit_lock+103}
       <ffffffff80152d88>{sync_page+0}
<ffffffff8015a0d8>{do_page_cache_readahead+81}
       <ffffffff80154d1f>{filemap_nopage+325}
<ffffffff8016373a>{__handle_mm_fault+1494}
       <ffffffff80188f03>{poll_freewait+87} 
<ffffffff801192c5>{do_page_fault+1989}
       <ffffffff80255eeb>{copy_user_generic+22} 
<ffffffff80189c31>{sys_select+935}
       <ffffffff8010e7d7>{error_exit+0}
Mem-info:
DMA per-cpu:
cpu 0 hot: high 186, batch 31 used:31
cpu 0 cold: high 62, batch 15 used:58
DMA32 per-cpu: empty
Normal per-cpu: empty
HighMem per-cpu: empty
Free pages:        2924kB (0kB HighMem)
Active:60890 inactive:60791 dirty:0 writeback:0 unstable:0 free:731 slab:2381
mapped:121670 pagetables:1091
DMA free:2924kB min:2916kB low:3644kB high:4372kB active:243560kB
inactive:243164kB present:532480kB pages_scanned:164357 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
DMA32 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 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 0
HighMem free:0kB min:128kB low:128kB high:128kB active:0kB inactive:0kB
present:0kB pages_scanned:0 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
DMA: 15*4kB 4*8kB 3*16kB 1*32kB 1*64kB 1*128kB 0*256kB 1*512kB 0*1024kB 1*2048kB
0*4096kB = 2924kB
DMA32: empty
Normal: empty
HighMem: empty
Swap cache: add 377075, delete 377075, find 299/391, race 0+0
Free swap  = 0kB
Total swap = 1052216kB
Free swap:            0kB
133120 pages of RAM
5721 reserved pages
13 pages shared
0 pages swap cached
Out of Memory: Killed process 10230 (mem01).



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