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Date: Tue, 05 Dec 2006 14:39:13 -0600
From: aucoin@houston.rr.com
Subject: Re: la la la la ... swappiness
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From: Linus Torvalds <torvalds@osdl.org>
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To: Linus Torvalds <torvalds@osdl.org>
Cc: Christoph Lameter <clameter@sgi.com>, Andrew Morton <akpm@osdl.org>, 'Nick Piggin' <nickpiggin@yahoo.com.au>, 'Tim Schmielau' <tim@physik3.uni-rostock.de>, Linux Memory Management List <linux-mm@kvack.org>
List-ID: <linux-mm.kvack.org>

I didn't post it yet, I don't have a recent build with oom enabled at
the moment so I was digging through old bugzillas to see what I could
find. Here are some pieces from one oom firing, they're from old runs
and based on the bugzilla context I can't swear it's exactly the same
problem, I'm looking for more. The "ae" process that's being kill is one
of the three processes attached to the 1.6G shm.

Oct 11 19:06:38 QAR2MOVDB2 kernel:  [<c01049a4>] show_trace+0xd/0xf
Oct 11 19:06:38 QAR2MOVDB2 kernel:  [<c0104a43>] dump_stack+0x17/0x19
Oct 11 19:06:38 QAR2MOVDB2 kernel:  [<c0138f44>] out_of_memory+0x27/0x12f
Oct 11 19:06:38 QAR2MOVDB2 kernel:  [<c013a617>] __alloc_pages+0x1e1/0x261
Oct 11 19:06:38 QAR2MOVDB2 kernel:  [<c013a6bf>] __get_free_pages+0x28/0x37
Oct 11 19:06:38 QAR2MOVDB2 kernel:  [<c015f066>] __pollwait+0x33/0x9e
Oct 11 19:06:38 QAR2MOVDB2 kernel:  [<c01eb25c>] mqueue_poll_file+0x27/0x57
Oct 11 19:06:38 QAR2MOVDB2 kernel:  [<c015fb9b>] do_sys_poll+0x165/0x2da
Oct 11 19:06:38 QAR2MOVDB2 kernel:  [<c015ff24>] sys_poll+0x43/0x47
Oct 11 19:06:38 QAR2MOVDB2 kernel:  [<c0103513>] sysenter_past_esp+0x54/0x75

Oct 11 19:08:19 QAR2MOVDB2 kernel: Free swap  = 421008kB
Oct 11 19:08:19 QAR2MOVDB2 kernel: Total swap = 524276kB
Oct 11 19:08:19 QAR2MOVDB2 kernel: Free swap:       421008kB
Oct 11 19:08:19 QAR2MOVDB2 kernel: 524224 pages of RAM
Oct 11 19:08:19 QAR2MOVDB2 kernel: 294848 pages of HIGHMEM
Oct 11 19:08:19 QAR2MOVDB2 kernel: 5437 reserved pages
Oct 11 19:08:19 QAR2MOVDB2 kernel: 1340645 pages shared
Oct 11 19:08:19 QAR2MOVDB2 kernel: 25817 pages swap cached
Oct 11 19:08:19 QAR2MOVDB2 kernel: 107 pages dirty
Oct 11 19:08:19 QAR2MOVDB2 kernel: 45405 pages writeback
Oct 11 19:08:19 QAR2MOVDB2 kernel: 2638 pages mapped
Oct 11 19:08:19 QAR2MOVDB2 kernel: 29632 pages slab
Oct 11 19:08:19 QAR2MOVDB2 kernel: 385 pages pagetables
Oct 11 19:08:19 QAR2MOVDB2 kernel: Out of Memory: Kill process 1636 (ae)
score
556471 and children.
Oct 11 19:08:19 QAR2MOVDB2 kernel: Out of memory: Killed process 1636 (ae).

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