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Date: Mon, 16 Nov 2009 13:08:45 +0100 From: Karol Lewandowski <karol.k.lewandowski@...il.com> To: Mel Gorman <mel@....ul.ie> Cc: Karol Lewandowski <karol.k.lewandowski@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, Frans Pop <elendil@...net.nl>, Jiri Kosina <jkosina@...e.cz>, Sven Geggus <lists@...hsschwanzdomain.de>, Tobias Oetiker <tobi@...iker.ch>, linux-kernel@...r.kernel.org, "linux-mm@...ck.org" <linux-mm@...ck.org>, KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>, Pekka Enberg <penberg@...helsinki.fi>, Rik van Riel <riel@...hat.com>, Christoph Lameter <cl@...ux-foundation.org>, Stephan von Krawczynski <skraw@...net.com>, "Rafael J. Wysocki" <rjw@...k.pl>, Kernel Testers List <kernel-testers@...r.kernel.org> Subject: Re: [PATCH 0/5] Reduce GFP_ATOMIC allocation failures, candidate fix V3 On Mon, Nov 16, 2009 at 09:52:58AM +0000, Mel Gorman wrote: > On Sun, Nov 15, 2009 at 01:07:21PM +0100, Karol Lewandowski wrote: > > total used free shared buffers cached > > Mem: 255240 194052 61188 0 4040 49364 > > -/+ buffers/cache: 140648 114592 > > Swap: 514040 72712 441328 > > > > > > Is that ok? Wild guess -- maybe kswapd doesn't take fragmentation (or > > other factors) into account as hard as it used to in 2.6.30? > That's a lot of memory free. I take it the order-5 GFP_ATOMIC allocation > failed. What was the dmesg for it please? Sure, it's attached below. Hmm, "Normal free"/"DMA free" are much lower than 61MB as shown above. free(1) output was collected right after resume successfully finished. Thanks. e100: Intel(R) PRO/100 Network Driver, 3.5.24-k2-NAPI e100: Copyright(c) 1999-2006 Intel Corporation e100 0000:00:03.0: PCI INT A -> Link[LNKC] -> GSI 9 (level, low) -> IRQ 9 e100 0000:00:03.0: PME# disabled e100: eth0: e100_probe: addr 0xe8120000, irq 9, MAC addr 00:10:a4:89:e8:84 ifconfig: page allocation failure. order:5, mode:0x8020 Pid: 7339, comm: ifconfig Not tainted 2.6.32-rc7-dirty #3 Call Trace: [<c0168704>] ? __alloc_pages_nodemask+0x45d/0x4eb [<c01050b3>] ? dma_generic_alloc_coherent+0x4a/0xa7 [<c0105069>] ? dma_generic_alloc_coherent+0x0/0xa7 [<d0935ba0>] ? e100_alloc_cbs+0xc2/0x16f [e100] [<d0936d23>] ? e100_up+0x1b/0xf5 [e100] [<d0936e14>] ? e100_open+0x17/0x41 [e100] [<c03245cc>] ? dev_open+0x8f/0xc5 [<c0323d54>] ? dev_change_flags+0xa2/0x155 [<c03576b0>] ? devinet_ioctl+0x22a/0x51e [<c0316ebc>] ? sock_ioctl+0x1b6/0x1da [<c0316d06>] ? sock_ioctl+0x0/0x1da [<c0193f9b>] ? vfs_ioctl+0x1c/0x5f [<c0194565>] ? do_vfs_ioctl+0x4bf/0x4fb [<c0373362>] ? do_page_fault+0x33b/0x351 [<c01945cd>] ? sys_ioctl+0x2c/0x42 [<c0102834>] ? sysenter_do_call+0x12/0x26 Mem-Info: DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 Normal per-cpu: CPU 0: hi: 90, btch: 15 usd: 89 active_anon:15632 inactive_anon:17534 isolated_anon:0 active_file:12373 inactive_file:12884 isolated_file:0 unevictable:0 dirty:15 writeback:62 unstable:0 free:2072 slab_reclaimable:849 slab_unreclaimable:1080 mapped:7343 shmem:233 pagetables:505 bounce:0 DMA free:1440kB min:120kB low:148kB high:180kB active_anon:224kB inactive_anon:1516kB active_file:3440kB inactive_file:5140kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15808kB mlocked:0kB dirty:0kB writeback:0kB mapped:404kB shmem:44kB slab_reclaimable:16kB slab_unreclaimable:16kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 238 238 Normal free:6848kB min:1912kB low:2388kB high:2868kB active_anon:62304kB inactive_anon:68620kB active_file:46052kB inactive_file:46396kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:243776kB mlocked:0kB dirty:60kB writeback:248kB mapped:28968kB shmem:888kB slab_reclaimable:3380kB slab_unreclaimable:4304kB kernel_stack:464kB pagetables:2020kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:128 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA: 4*4kB 8*8kB 33*16kB 22*32kB 2*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 1440kB Normal: 486*4kB 271*8kB 139*16kB 12*32kB 0*64kB 1*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 6848kB 29040 total pagecache pages 3548 pages in swap cache Swap cache stats: add 72385, delete 68837, find 70772/74308 Free swap = 483200kB Total swap = 514040kB 65520 pages RAM 1726 pages reserved 20970 pages shared 50976 pages non-shared ifconfig: page allocation failure. order:5, mode:0x8020 Pid: 7339, comm: ifconfig Not tainted 2.6.32-rc7-dirty #3 Call Trace: [<c0168704>] ? __alloc_pages_nodemask+0x45d/0x4eb [<c01050b3>] ? dma_generic_alloc_coherent+0x4a/0xa7 [<c0105069>] ? dma_generic_alloc_coherent+0x0/0xa7 [<d0935ba0>] ? e100_alloc_cbs+0xc2/0x16f [e100] [<d0936d23>] ? e100_up+0x1b/0xf5 [e100] [<d0936e14>] ? e100_open+0x17/0x41 [e100] [<c03245cc>] ? dev_open+0x8f/0xc5 [<c0323d54>] ? dev_change_flags+0xa2/0x155 [<c03576b0>] ? devinet_ioctl+0x22a/0x51e [<c0316ebc>] ? sock_ioctl+0x1b6/0x1da [<c0316d06>] ? sock_ioctl+0x0/0x1da [<c0193f9b>] ? vfs_ioctl+0x1c/0x5f [<c0194565>] ? do_vfs_ioctl+0x4bf/0x4fb [<c0189370>] ? vfs_write+0xf4/0x105 [<c01945cd>] ? sys_ioctl+0x2c/0x42 [<c0102834>] ? sysenter_do_call+0x12/0x26 Mem-Info: DMA per-cpu: CPU 0: hi: 0, btch: 1 usd: 0 Normal per-cpu: CPU 0: hi: 90, btch: 15 usd: 82 active_anon:15563 inactive_anon:17593 isolated_anon:0 active_file:12294 inactive_file:12787 isolated_file:0 unevictable:0 dirty:18 writeback:155 unstable:0 free:2267 slab_reclaimable:847 slab_unreclaimable:1080 mapped:7271 shmem:229 pagetables:505 bounce:0 DMA free:1440kB min:120kB low:148kB high:180kB active_anon:224kB inactive_anon:1516kB active_file:3440kB inactive_file:5140kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15808kB mlocked:0kB dirty:0kB writeback:0kB mapped:404kB shmem:44kB slab_reclaimable:16kB slab_unreclaimable:16kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 238 238 Normal free:7628kB min:1912kB low:2388kB high:2868kB active_anon:62028kB inactive_anon:68856kB active_file:45736kB inactive_file:46008kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:243776kB mlocked:0kB dirty:72kB writeback:620kB mapped:28680kB shmem:872kB slab_reclaimable:3372kB slab_unreclaimable:4304kB kernel_stack:464kB pagetables:2020kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no lowmem_reserve[]: 0 0 0 DMA: 4*4kB 8*8kB 33*16kB 22*32kB 2*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 1440kB Normal: 559*4kB 290*8kB 152*16kB 16*32kB 0*64kB 1*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 7628kB 29016 total pagecache pages 3702 pages in swap cache Swap cache stats: add 72550, delete 68848, find 70774/74310 Free swap = 482540kB Total swap = 514040kB 65520 pages RAM 1726 pages reserved 20826 pages shared 50895 pages non-shared e100 0000:00:03.0: firmware: requesting e100/d101s_ucode.bin e100: eth0 NIC Link is Up 100 Mbps Full Duplex crashreporter[9491]: segfault at b67701a0 ip b67701a0 sp bfa0fc2c error 4 in libnss_files-2.7.so[b67b6000+a000] -- 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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