> CC: "Johannes Weiner" <hannes@xxxxxxxxxxx>, "Andrew Morton" <akpm@xxxxxxxxxxxxxxxxxxxx>, "David Rientjes" <rientjes@xxxxxxxxxx>, "KAMEZAWA Hiroyuki" <kamezawa.hiroyu@xxxxxxxxxxxxxx>, "KOSAKI Motohiro" <kosaki.motohiro@xxxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, cgroups@xxxxxxxxxxxxxxx, x86@xxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx >On Wed 18-09-13 16:03:04, azurIt wrote: >[..] >> I was finally able to get stack of problematic process :) I saved it >> two times from the same process, as Michal suggested (i wasn't able to >> take more). Here it is: >> >> First (doesn't look very helpfull): >> [<ffffffffffffffff>] 0xffffffffffffffff > >No it is not. > >> Second: >> [<ffffffff810e17d1>] shrink_zone+0x481/0x650 >> [<ffffffff810e2ade>] do_try_to_free_pages+0xde/0x550 >> [<ffffffff810e310b>] try_to_free_pages+0x9b/0x120 >> [<ffffffff81148ccd>] free_more_memory+0x5d/0x60 >> [<ffffffff8114931d>] __getblk+0x14d/0x2c0 >> [<ffffffff8114c973>] __bread+0x13/0xc0 >> [<ffffffff811968a8>] ext3_get_branch+0x98/0x140 >> [<ffffffff81197497>] ext3_get_blocks_handle+0xd7/0xdc0 >> [<ffffffff81198244>] ext3_get_block+0xc4/0x120 >> [<ffffffff81155b8a>] do_mpage_readpage+0x38a/0x690 >> [<ffffffff81155ffb>] mpage_readpages+0xfb/0x160 >> [<ffffffff811972bd>] ext3_readpages+0x1d/0x20 >> [<ffffffff810d9345>] __do_page_cache_readahead+0x1c5/0x270 >> [<ffffffff810d9411>] ra_submit+0x21/0x30 >> [<ffffffff810cfb90>] filemap_fault+0x380/0x4f0 >> [<ffffffff810ef908>] __do_fault+0x78/0x5a0 >> [<ffffffff810f2b24>] handle_pte_fault+0x84/0x940 >> [<ffffffff810f354a>] handle_mm_fault+0x16a/0x320 >> [<ffffffff8102715b>] do_page_fault+0x13b/0x490 >> [<ffffffff815cb87f>] page_fault+0x1f/0x30 >> [<ffffffffffffffff>] 0xffffffffffffffff > >This is the direct reclaim path. You are simply running out of memory >globaly. There is no memcg specific code in that trace. No, i'm not. Here is htop and server graphs from this case: http://watchdog.sk/lkml/htop3.jpg (here you can see actual memory usage) http://watchdog.sk/lkml/server01.jpg If i was really having global OOM (which i'm not for 101%) where that i/o comes from? I have no swap. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
