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Date: Mon, 29 Jun 2009 16:56:47 +0100 From: David Woodhouse <dwmw2@...radead.org> To: David Howells <dhowells@...hat.com> Cc: Wu Fengguang <fengguang.wu@...el.com>, Minchan Kim <minchan.kim@...il.com>, Mel Gorman <mel@....ul.ie>, KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>, Johannes Weiner <hannes@...xchg.org>, "riel@...hat.com" <riel@...hat.com>, Andrew Morton <akpm@...ux-foundation.org>, LKML <linux-kernel@...r.kernel.org>, Christoph Lameter <cl@...ux-foundation.org>, "peterz@...radead.org" <peterz@...radead.org>, "tytso@....edu" <tytso@....edu>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "elladan@...imo.com" <elladan@...imo.com>, "npiggin@...e.de" <npiggin@...e.de>, "Barnes, Jesse" <jesse.barnes@...el.com> Subject: Re: Found the commit that causes the OOMs On Mon, 2009-06-29 at 16:54 +0100, David Howells wrote: > Wu Fengguang <fengguang.wu@...el.com> wrote: > > > Yes this time the OOM order/flags are much different from all previous OOMs. > > > > btw, I found that msgctl11 is pretty good at making a lot of SUnreclaim and > > PageTables pages: > > I got David Woodhouse to run this on one of this boxes, but he doesn't see the > problem, I think because he's got 4GB of RAM, and never comes close to running > out. > > I've asked him to reboot with mem=1G to see if that helps reproduce it. msgctl11 invoked oom-killer: gfp_mask=0xd0, order=1, oom_adj=0 Pid: 5795, comm: msgctl11 Not tainted 2.6.31-rc1 #147 Call Trace: [<ffffffff81092c77>] oom_kill_process.clone.0+0xac/0x254 [<ffffffff81092b5c>] ? badness+0x24d/0x2bc [<ffffffff81092f5f>] __out_of_memory+0x140/0x157 [<ffffffff8109308f>] out_of_memory+0x119/0x150 [<ffffffff81095c65>] ? drain_local_pages+0x16/0x18 [<ffffffff810967ab>] __alloc_pages_nodemask+0x45a/0x55b [<ffffffff810a32b0>] ? __inc_zone_page_state+0x2e/0x30 [<ffffffff810bb6b9>] alloc_pages_current+0xae/0xb6 [<ffffffff810a604a>] ? do_wp_page+0x621/0x6c3 [<ffffffff81094d7e>] __get_free_pages+0xe/0x4b [<ffffffff810403a7>] copy_process+0xab/0x11a5 [<ffffffff810327c8>] ? check_preempt_wakeup+0x11a/0x142 [<ffffffff810a7a06>] ? handle_mm_fault+0x678/0x6e9 [<ffffffff810415ec>] do_fork+0x14b/0x338 [<ffffffff8105b50a>] ? up_read+0xe/0x10 [<ffffffff814ee655>] ? do_page_fault+0x2da/0x307 [<ffffffff8100a55c>] sys_clone+0x28/0x2a [<ffffffff8100bfc3>] stub_clone+0x13/0x20 [<ffffffff8100bcdb>] ? system_call_fastpath+0x16/0x1b Mem-Info: Node 0 DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 CPU 1: hi: 0, btch: 1 usd: 0 CPU 2: hi: 0, btch: 1 usd: 0 CPU 3: hi: 0, btch: 1 usd: 0 CPU 4: hi: 0, btch: 1 usd: 0 CPU 5: hi: 0, btch: 1 usd: 0 CPU 6: hi: 0, btch: 1 usd: 0 CPU 7: hi: 0, btch: 1 usd: 0 Node 0 DMA32 per-cpu: CPU 0: hi: 186, btch: 31 usd: 0 CPU 1: hi: 186, btch: 31 usd: 20 CPU 2: hi: 186, btch: 31 usd: 19 CPU 3: hi: 186, btch: 31 usd: 20 CPU 4: hi: 186, btch: 31 usd: 19 CPU 5: hi: 186, btch: 31 usd: 24 CPU 6: hi: 186, btch: 31 usd: 41 CPU 7: hi: 186, btch: 31 usd: 25 Active_anon:72835 active_file:89 inactive_anon:575 inactive_file:103 unevictable:0 dirty:36 writeback:0 unstable:0 free:2467 slab:38211 mapped:229 pagetables:66918 bounce:0 Node 0 DMA free:4036kB min:60kB low:72kB high:88kB active_anon:3228kB inactive_a non:256kB active_file:0kB inactive_file:0kB unevictable:0kB present:15356kB page s_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 994 994 994 Node 0 DMA32 free:5832kB min:4000kB low:5000kB high:6000kB active_anon:288112kB inactive_anon:2044kB active_file:356kB inactive_file:412kB unevictable:0kB prese nt:1018080kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 0 Node 0 DMA: 1*4kB 2*8kB 1*16kB 0*32kB 1*64kB 2*128kB 0*256kB 1*512kB 1*1024kB 1* 2048kB 0*4096kB = 3940kB Node 0 DMA32: 852*4kB 1*8kB 0*16kB 1*32kB 1*64kB 0*128kB 1*256kB 1*512kB 1*1024k B 0*2048kB 0*4096kB = 5304kB 437 total pagecache pages 0 pages in swap cache Swap cache stats: add 0, delete 0, find 0/0 Free swap = 0kB Total swap = 0kB 262144 pages RAM 6503 pages reserved 205864 pages shared 226536 pages non-shared Out of memory: kill process 3855 (msgctl11) score 179248 or a child Killed process 4222 (msgctl11) -- David Woodhouse Open Source Technology Centre David.Woodhouse@...el.com Intel Corporation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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