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Message-ID: <50AF1BEF.4050007@redhat.com> Date: Fri, 23 Nov 2012 14:47:11 +0800 From: Zhouping Liu <zliu@...hat.com> To: Ingo Molnar <mingo@...nel.org> CC: linux-kernel@...r.kernel.org, linux-mm@...ck.org, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Paul Turner <pjt@...gle.com>, Lee Schermerhorn <Lee.Schermerhorn@...com>, Christoph Lameter <cl@...ux.com>, Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>, Andrew Morton <akpm@...ux-foundation.org>, Andrea Arcangeli <aarcange@...hat.com>, Linus Torvalds <torvalds@...ux-foundation.org>, Thomas Gleixner <tglx@...utronix.de>, Johannes Weiner <hannes@...xchg.org>, Hugh Dickins <hughd@...gle.com> Subject: Re: [PATCH 00/33] Latest numa/core release, v17 On 11/23/2012 06:53 AM, Ingo Molnar wrote: > > * Ingo Molnar <mingo@...nel.org> wrote: > >> This release mainly addresses one of the regressions Linus >> (rightfully) complained about: the "4x JVM" SPECjbb run. >> >> [ Note to testers: if possible please still run with >> CONFIG_TRANSPARENT_HUGEPAGES=y enabled, to avoid the >> !THP regression that is still not fully fixed. >> It will be fixed next. ] > I forgot to include the Git link: > > git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git master Hi Ingo, I tested the latest tip/master tree on 2 nodes with 8 processors, closed CONFIG_TRANSPARENT_HUGEPAGE, and found some issues: one is that command `stress -i 20 -m 30 -v` caused some hung tasks: ------------- snip --------------------------- [ 1726.278382] Node 0 DMA free:15880kB min:20kB low:24kB high:28kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15332kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:16kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes [ 1726.366825] lowmem_reserve[]: 0 1957 3973 3973 [ 1726.388610] Node 0 DMA32 free:10856kB min:2796kB low:3492kB high:4192kB active_anon:1479384kB inactive_anon:498788kB active_file:0kB inactive_file:8kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:2004184kB mlocked:0kB dirty:0kB writeback:0kB mapped:4kB shmem:20kB slab_reclaimable:140kB slab_unreclaimable:96kB kernel_stack:8kB pagetables:80kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:3502066 all_unreclaimable? yes [ 1726.490163] lowmem_reserve[]: 0 0 2016 2016 [ 1726.515235] Node 0 Normal free:2880kB min:2880kB low:3600kB high:4320kB active_anon:1453776kB inactive_anon:490196kB active_file:748kB inactive_file:1140kB unevictable:3740kB isolated(anon):0kB isolated(file):0kB present:2064384kB mlocked:3492kB dirty:0kB writeback:0kB mapped:2748kB shmem:2116kB slab_reclaimable:9260kB slab_unreclaimable:35880kB kernel_stack:1184kB pagetables:3308kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:3437106 all_unreclaimable? yes [ 1726.629591] lowmem_reserve[]: 0 0 0 0 [ 1726.657650] Node 1 Normal free:5748kB min:5760kB low:7200kB high:8640kB active_anon:3383776kB inactive_anon:682376kB active_file:8kB inactive_file:340kB unevictable:8kB isolated(anon):384kB isolated(file):0kB present:4128768kB mlocked:8kB dirty:0kB writeback:0kB mapped:20kB shmem:12kB slab_reclaimable:9364kB slab_unreclaimable:13728kB kernel_stack:880kB pagetables:12492kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:8696274 all_unreclaimable? yes [ 1726.782732] lowmem_reserve[]: 0 0 0 0 [ 1726.814748] Node 0 DMA: 2*4kB 2*8kB 1*16kB 1*32kB 3*64kB 2*128kB 0*256kB 0*512kB 1*1024kB 1*2048kB 3*4096kB = 15880kB [ 1726.854951] Node 0 DMA32: 12*4kB 25*8kB 21*16kB 19*32kB 15*64kB 8*128kB 4*256kB 1*512kB 0*1024kB 1*2048kB 1*4096kB = 10856kB [ 1726.896378] Node 0 Normal: 556*4kB 11*8kB 6*16kB 7*32kB 2*64kB 1*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 2888kB [ 1726.937928] Node 1 Normal: 392*4kB 22*8kB 1*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 1*4096kB = 5856kB [ 1726.979519] 481162 total pagecache pages [ 1727.013687] 479540 pages in swap cache [ 1727.047898] Swap cache stats: add 2176770, delete 1697230, find 701489/781867 [ 1727.085709] Free swap = 4371040kB [ 1727.119839] Total swap = 8175612kB [ 1727.187872] 2097136 pages RAM [ 1727.221789] 56226 pages reserved [ 1727.256273] 1721904 pages shared [ 1727.290826] 1549555 pages non-shared [ 1727.325708] [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name [ 1727.366026] [ 303] 0 303 9750 184 23 500 -1000 systemd-udevd [ 1727.407347] [ 448] 0 448 6558 178 13 56 -1000 auditd [ 1727.447970] [ 516] 0 516 61311 172 22 105 0 rsyslogd [ 1727.488827] [ 519] 0 519 24696 35 15 35 0 iscsiuio [ 1727.529839] [ 529] 81 529 8201 246 27 93 -900 dbus-daemon [ 1727.571553] [ 530] 0 530 1264 93 9 16 0 iscsid [ 1727.612795] [ 531] 0 531 1389 843 9 0 -17 iscsid [ 1727.654069] [ 538] 0 538 1608 157 10 29 0 mcelog [ 1727.695659] [ 543] 0 543 5906 138 16 49 0 atd [ 1727.736954] [ 551] 0 551 30146 211 22 123 0 crond [ 1727.778589] [ 569] 0 569 26612 223 83 185 0 login [ 1727.820932] [ 587] 0 587 86085 334 84 139 0 NetworkManager [ 1727.863388] [ 643] 0 643 21931 200 65 171 -900 modem-manager [ 1727.906015] [ 644] 0 644 5812 183 16 74 0 bluetoothd [ 1727.948629] [ 672] 0 672 118364 228 179 1079 0 libvirtd [ 1727.991230] [ 691] 0 691 20059 189 40 198 -1000 sshd [ 1728.033700] [ 996] 0 996 28950 196 17 516 0 bash [ 1728.076541] [ 1056] 0 1056 1803 112 10 22 0 stress [ 1728.119495] [ 1057] 0 1057 1803 27 10 21 0 stress [ 1728.162616] [ 1058] 0 1058 67340 54961 118 12 0 stress [ 1728.205521] [ 1059] 0 1059 1803 27 10 21 0 stress [ 1728.248414] [ 1060] 0 1060 67340 12209 35 12 0 stress [ 1728.291529] [ 1061] 0 1061 1803 27 10 21 0 stress [ 1728.335147] [ 1062] 0 1062 67340 23519 57 12 0 stress [ 1728.378537] [ 1063] 0 1063 1803 27 10 21 0 stress [ 1728.421877] [ 1064] 0 1064 67340 7673 138 57944 0 stress [ 1728.465325] [ 1065] 0 1065 1803 27 10 21 0 stress [ 1728.508955] [ 1066] 0 1066 67340 90 11 12 0 stress [ 1728.553187] [ 1067] 0 1067 1803 27 10 21 0 stress [ 1728.597554] [ 1068] 0 1068 67340 58628 126 12 0 stress [ 1728.640668] [ 1069] 0 1069 1803 27 10 21 0 stress [ 1728.683676] [ 1070] 0 1070 67340 59802 128 12 0 stress [ 1728.726534] [ 1071] 0 1071 1803 27 10 21 0 stress [ 1728.769082] [ 1072] 0 1072 67340 5924 138 59693 0 stress [ 1728.811455] [ 1073] 0 1073 1803 27 10 21 0 stress [ 1728.852798] [ 1074] 0 1074 67340 65103 138 14 0 stress [ 1728.892605] [ 1075] 0 1075 1803 27 10 21 0 stress [ 1728.931191] [ 1076] 0 1076 67340 60077 128 13 0 stress [ 1728.969491] [ 1077] 0 1077 1803 27 10 21 0 stress [ 1729.006394] [ 1078] 0 1078 67340 13262 138 52355 0 stress [ 1729.042189] [ 1079] 0 1079 1803 27 10 21 0 stress [ 1729.076890] [ 1080] 0 1080 67340 38640 87 12 0 stress [ 1729.111443] [ 1081] 0 1081 1803 27 10 21 0 stress [ 1729.144638] [ 1082] 0 1082 67340 8238 138 57379 0 stress [ 1729.176403] [ 1083] 0 1083 1803 27 10 21 0 stress [ 1729.206905] [ 1084] 0 1084 67340 55392 119 12 0 stress [ 1729.237086] [ 1085] 0 1085 1803 27 10 21 0 stress [ 1729.265883] [ 1086] 0 1086 67340 4169 138 61447 0 stress [ 1729.293362] [ 1087] 0 1087 1803 27 10 21 0 stress [ 1729.319405] [ 1088] 0 1088 67340 16042 42 12 0 stress [ 1729.345380] [ 1089] 0 1089 1803 27 10 21 0 stress [ 1729.370934] [ 1090] 0 1090 67340 1223 13 12 0 stress [ 1729.395553] [ 1091] 0 1091 1803 27 10 21 0 stress [ 1729.419544] [ 1092] 0 1092 67340 8318 138 57298 0 stress [ 1729.443863] [ 1093] 0 1093 1803 27 10 21 0 stress [ 1729.467471] [ 1094] 0 1094 67340 2342 16 12 0 stress [ 1729.491074] [ 1095] 0 1095 1803 27 10 21 0 stress [ 1729.514194] [ 1096] 0 1096 67340 59017 126 12 0 stress [ 1729.536998] [ 1097] 0 1097 67340 36245 82 12 0 stress [ 1729.559710] [ 1098] 0 1098 67340 57050 122 12 0 stress [ 1729.582264] [ 1099] 0 1099 67340 29239 68 12 0 stress [ 1729.604895] [ 1100] 0 1100 67340 30815 71 12 0 stress [ 1729.627532] [ 1101] 0 1101 67340 6881 138 58735 0 stress [ 1729.650016] [ 1102] 0 1102 67340 37447 84 12 0 stress [ 1729.672130] [ 1103] 0 1103 67340 6891 24 12 0 stress [ 1729.693897] [ 1104] 0 1104 67340 35463 80 12 0 stress [ 1729.715565] [ 1105] 0 1105 67340 11843 34 12 0 stress [ 1729.736992] [ 1106] 0 1106 67340 10279 138 55338 0 stress [ 1729.758383] [ 1198] 0 1198 88549 5957 185 6739 -900 setroubleshootd [ 1729.780776] [ 2309] 0 2309 3243 192 12 0 0 systemd-cgroups [ 1729.803176] [ 2312] 0 2312 3243 179 12 0 0 systemd-cgroups [ 1729.825560] [ 2314] 0 2314 3243 209 11 0 0 systemd-cgroups [ 1729.847848] [ 2315] 0 2315 3243 165 11 0 0 systemd-cgroups [ 1729.870223] [ 2317] 0 2317 1736 41 6 0 0 systemd-cgroups [ 1729.892316] [ 2319] 0 2319 2688 46 7 0 0 systemd-cgroups [ 1729.914310] [ 2320] 0 2320 681 34 4 0 0 systemd-cgroups [ 1729.936223] [ 2321] 0 2321 42 1 2 0 0 systemd-cgroups [ 1729.957811] Out of memory: Kill process 516 (rsyslogd) score 0 or sacrifice child [ 1729.978407] Killed process 516 (rsyslogd) total-vm:245244kB, anon-rss:0kB, file-rss:688kB [ 1923.469572] INFO: task kworker/4:2:232 blocked for more than 120 seconds. [ 1923.490002] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1923.511856] kworker/4:2 D ffff88027fc14080 0 232 2 0x00000000 [ 1923.533216] ffff88027977db88 0000000000000046 ffff8802797b5040 ffff88027977dfd8 [ 1923.556100] ffff88027977dfd8 ffff88027977dfd8 ffff880179063580 ffff8802797b5040 [ 1923.578569] ffff88027977db68 ffff88027977dd10 7fffffffffffffff ffff8802797b5040 [ 1923.601034] Call Trace: [ 1923.618253] [<ffffffff815e7b69>] schedule+0x29/0x70 [ 1923.638372] [<ffffffff815e6114>] schedule_timeout+0x1f4/0x2b0 [ 1923.659539] [<ffffffff815e79f0>] wait_for_common+0x120/0x170 [ 1923.680664] [<ffffffff81096920>] ? try_to_wake_up+0x2d0/0x2d0 [ 1923.702224] [<ffffffff815e7b3d>] wait_for_completion+0x1d/0x20 [ 1923.723820] [<ffffffff8107b0b9>] call_usermodehelper_fns+0x1d9/0x200 [ 1923.746167] [<ffffffff810d0b32>] cgroup_release_agent+0xe2/0x180 [ 1923.768233] [<ffffffff8107e638>] process_one_work+0x148/0x490 [ 1923.790179] [<ffffffff810d0a50>] ? init_root_id+0xb0/0xb0 [ 1923.811797] [<ffffffff8107f16e>] worker_thread+0x15e/0x450 [ 1923.833733] [<ffffffff8107f010>] ? busy_worker_rebind_fn+0x110/0x110 [ 1923.856703] [<ffffffff81084350>] kthread+0xc0/0xd0 [ 1923.878067] [<ffffffff81084290>] ? kthread_create_on_node+0x120/0x120 [ 1923.901388] [<ffffffff815f12ac>] ret_from_fork+0x7c/0xb0 [ 1923.923544] [<ffffffff81084290>] ? kthread_create_on_node+0x120/0x120 [ 1923.947290] INFO: task rs:main Q:Reg:534 blocked for more than 120 seconds. [ 1923.971646] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1923.997338] rs:main Q:Reg D ffff88027fc54080 0 534 1 0x00000084 [ 1924.022565] ffff880279913930 0000000000000082 ffff880279b29ac0 ffff880279913fd8 [ 1924.049053] ffff880279913fd8 ffff880279913fd8 ffff880279b2b580 ffff880279b29ac0 [ 1924.075230] 000000000003b55f ffff880279b29ac0 ffff880279bedde0 ffffffffffffffff [ 1924.101476] Call Trace: [ 1924.122766] [<ffffffff815e7b69>] schedule+0x29/0x70 [ 1924.146894] [<ffffffff815e8915>] rwsem_down_failed_common+0xb5/0x140 [ 1924.173018] [<ffffffff815e89d5>] rwsem_down_read_failed+0x15/0x17 [ 1924.198572] [<ffffffff812eb0c4>] call_rwsem_down_read_failed+0x14/0x30 [ 1924.224975] [<ffffffff810fecf3>] ? taskstats_exit+0x383/0x420 [ 1924.250579] [<ffffffff812e9e5f>] ? __get_user_8+0x1f/0x29 [ 1924.275797] [<ffffffff815e6df4>] ? down_read+0x24/0x2b [ 1924.300955] [<ffffffff815eca16>] __do_page_fault+0x1c6/0x4e0 [ 1924.326726] [<ffffffff811797ef>] ? alloc_pages_current+0xcf/0x140 [ 1924.353121] [<ffffffff8118345e>] ? new_slab+0x20e/0x310 [ 1924.378729] [<ffffffff815ecd3e>] do_page_fault+0xe/0x10 [ 1924.404424] [<ffffffff815e9358>] page_fault+0x28/0x30 [ 1924.429991] [<ffffffff810fecf3>] ? taskstats_exit+0x383/0x420 [ 1924.456539] [<ffffffff812e9e5f>] ? __get_user_8+0x1f/0x29 [ 1924.482746] [<ffffffff810c047d>] ? exit_robust_list+0x5d/0x160 [ 1924.509604] [<ffffffff810feca9>] ? taskstats_exit+0x339/0x420 [ 1924.536514] [<ffffffff8105e5d7>] mm_release+0x147/0x160 [ 1924.563242] [<ffffffff81065186>] exit_mm+0x26/0x120 [ 1924.589384] [<ffffffff81066787>] do_exit+0x167/0x8d0 [ 1924.615888] [<ffffffff810be75b>] ? futex_wait+0x13b/0x2c0 [ 1924.642809] [<ffffffff81183060>] ? kmem_cache_free+0x20/0x160 [ 1924.670213] [<ffffffff8106733f>] do_group_exit+0x3f/0xa0 [ 1924.697387] [<ffffffff81075eca>] get_signal_to_deliver+0x1ca/0x5e0 [ 1924.726012] [<ffffffff8101437f>] do_signal+0x3f/0x610 [ 1924.753260] [<ffffffff810c06ad>] ? do_futex+0x12d/0x580 [ 1924.780688] [<ffffffff810149f0>] do_notify_resume+0x80/0xb0 [ 1924.808394] [<ffffffff815f1612>] int_signal+0x12/0x17 [ 1924.835765] INFO: task rsyslogd:536 blocked for more than 120 seconds. [ 1924.864967] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1924.896012] rsyslogd D ffff88017bc14080 0 536 1 0x00000086 [ 1924.926767] ffff8802791b7c38 0000000000000082 ffff88027a0a0000 ffff8802791b7fd8 [ 1924.958361] ffff8802791b7fd8 ffff8802791b7fd8 ffff880279b29ac0 ffff88027a0a0000 [ 1924.990164] ffff8802791b7c28 ffff88027a0a0000 ffff880279bedde0 ffffffffffffffff [ 1925.021929] Call Trace: [ 1925.048178] [<ffffffff815e7b69>] schedule+0x29/0x70 [ 1925.077075] [<ffffffff815e8915>] rwsem_down_failed_common+0xb5/0x140 [ 1925.107125] [<ffffffff815e89b3>] rwsem_down_write_failed+0x13/0x20 [ 1925.136665] [<ffffffff812eb0f3>] call_rwsem_down_write_failed+0x13/0x20 [ 1925.166430] [<ffffffff815e6dc2>] ? down_write+0x32/0x40 [ 1925.194797] [<ffffffff8109ae0b>] task_numa_work+0xeb/0x270 [ 1925.223254] [<ffffffff81081047>] task_work_run+0xa7/0xe0 [ 1925.251609] [<ffffffff810762bb>] get_signal_to_deliver+0x5bb/0x5e0 [ 1925.280624] [<ffffffff8115e619>] ? handle_mm_fault+0x149/0x210 [ 1925.309222] [<ffffffff8101437f>] do_signal+0x3f/0x610 [ 1925.337048] [<ffffffff8117cea1>] ? change_prot_numa+0x51/0x60 [ 1925.365604] [<ffffffff8109aef6>] ? task_numa_work+0x1d6/0x270 [ 1925.394295] [<ffffffff810149f0>] do_notify_resume+0x80/0xb0 [ 1925.422677] [<ffffffff815e917c>] retint_signal+0x48/0x8c [ 1925.450753] INFO: task NetworkManager:587 blocked for more than 120 seconds. [ 1925.480882] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1925.512086] NetworkManager D ffff88027fc54080 0 587 1 0x00000080 [ 1925.542751] ffff880279fb7dc8 0000000000000086 ffff880279f29ac0 ffff880279fb7fd8 [ 1925.574086] ffff880279fb7fd8 ffff880279fb7fd8 ffff8801752c1ac0 ffff880279f29ac0 [ 1925.605328] ffffea0005e82c40 ffff880279f29ac0 ffff8801793cd860 ffffffffffffffff [ 1925.636585] Call Trace: [ 1925.662557] [<ffffffff815e7b69>] schedule+0x29/0x70 [ 1925.691518] [<ffffffff815e8915>] rwsem_down_failed_common+0xb5/0x140 [ 1925.721815] [<ffffffff8115e619>] ? handle_mm_fault+0x149/0x210 [ 1925.751814] [<ffffffff815e89b3>] rwsem_down_write_failed+0x13/0x20 [ 1925.781475] [<ffffffff812eb0f3>] call_rwsem_down_write_failed+0x13/0x20 [ 1925.811421] [<ffffffff815e6dc2>] ? down_write+0x32/0x40 [ 1925.839679] [<ffffffff8109ae0b>] task_numa_work+0xeb/0x270 [ 1925.868180] [<ffffffff810e307c>] ? __audit_syscall_exit+0x3ec/0x450 [ 1925.897544] [<ffffffff81081047>] task_work_run+0xa7/0xe0 [ 1925.925674] [<ffffffff810149e1>] do_notify_resume+0x71/0xb0 [ 1925.954159] [<ffffffff815e917c>] retint_signal+0x48/0x8c [ 2045.984126] INFO: task kworker/4:2:232 blocked for more than 120 seconds. [ 2046.013951] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2046.045339] kworker/4:2 D ffff88027fc14080 0 232 2 0x00000000 [ 2046.075873] ffff88027977db88 0000000000000046 ffff8802797b5040 ffff88027977dfd8 [ 2046.107357] ffff88027977dfd8 ffff88027977dfd8 ffff880179063580 ffff8802797b5040 [ 2046.138576] ffff88027977db68 ffff88027977dd10 7fffffffffffffff ffff8802797b5040 [ 2046.169696] Call Trace: [ 2046.195647] [<ffffffff815e7b69>] schedule+0x29/0x70 [ 2046.224276] [<ffffffff815e6114>] schedule_timeout+0x1f4/0x2b0 [ 2046.253957] [<ffffffff815e79f0>] wait_for_common+0x120/0x170 [ 2046.283497] [<ffffffff81096920>] ? try_to_wake_up+0x2d0/0x2d0 [ 2046.313349] [<ffffffff815e7b3d>] wait_for_completion+0x1d/0x20 [ 2046.343061] [<ffffffff8107b0b9>] call_usermodehelper_fns+0x1d9/0x200 [ 2046.373636] [<ffffffff810d0b32>] cgroup_release_agent+0xe2/0x180 [ 2046.403705] [<ffffffff8107e638>] process_one_work+0x148/0x490 [ 2046.433485] [<ffffffff810d0a50>] ? init_root_id+0xb0/0xb0 [ 2046.462879] [<ffffffff8107f16e>] worker_thread+0x15e/0x450 [ 2046.492398] [<ffffffff8107f010>] ? busy_worker_rebind_fn+0x110/0x110 [ 2046.522898] [<ffffffff81084350>] kthread+0xc0/0xd0 [ 2046.551810] [<ffffffff81084290>] ? kthread_create_on_node+0x120/0x120 [ 2046.582425] [<ffffffff815f12ac>] ret_from_fork+0x7c/0xb0 [ 2046.612099] [<ffffffff81084290>] ? kthread_create_on_node+0x120/0x120 ----------------------- snip ---------------------------- the other is that oom02(LTP: testcases/kernel/mem/oom/oom02) made oom-killer kill unexpected processes: (oom02 is designed to try to hog memory on one node), and oom02 always hung until you kill it manually. ------------ snip ----------------------- [12449.554508] [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name [12449.554524] [ 303] 0 303 9750 296 23 414 -1000 systemd-udevd [12449.554527] [ 448] 0 448 6558 224 13 35 -1000 auditd [12449.554532] [ 519] 0 519 24696 82 15 20 0 iscsiuio [12449.554534] [ 529] 81 529 8201 389 27 35 -900 dbus-daemon [12449.554536] [ 530] 0 530 1264 94 9 15 0 iscsid [12449.554538] [ 531] 0 531 1389 876 9 0 -17 iscsid [12449.554540] [ 538] 0 538 1608 158 10 28 0 mcelog [12449.554542] [ 543] 0 543 5906 138 16 48 0 atd [12449.554543] [ 551] 0 551 30146 301 22 56 0 crond [12449.554545] [ 569] 0 569 26612 224 83 184 0 login [12449.554547] [ 587] 0 587 108127 917 91 45 0 NetworkManager [12449.554549] [ 643] 0 643 21931 290 65 120 -900 modem-manager [12449.554551] [ 644] 0 644 5812 222 16 61 0 bluetoothd [12449.554553] [ 672] 0 672 118388 469 179 935 0 libvirtd [12449.554555] [ 691] 0 691 20059 229 40 177 -1000 sshd [12449.554556] [ 996] 0 996 28975 654 18 186 0 bash [12449.554558] [ 1198] 0 1198 88549 5958 185 6738 -900 setroubleshootd [12449.554563] [ 2332] 0 2332 74107 3729 152 0 0 systemd-journal [12449.554564] [ 2335] 0 2335 8222 388 20 0 0 systemd-logind [12449.554567] [20909] 0 20909 61311 456 22 0 0 rsyslogd [12449.554572] [12818] 0 12818 788031 6273 24 0 0 oom02 [12449.554574] [13193] 0 13193 23143 3749 46 0 0 dhclient [12449.554576] [13217] 0 13217 33221 1188 67 0 0 sshd [12449.554577] [13221] 0 13221 28949 879 19 0 0 bash [12449.554579] [13308] 0 13308 23143 3749 45 0 0 dhclient [12449.554581] [13388] 0 13388 36864 1063 45 0 0 vim [12449.554583] Out of memory: Kill process 13193 (dhclient) score 1 or sacrifice child [12449.554584] Killed process 13193 (dhclient) total-vm:92572kB, anon-rss:11976kB, file-rss:3020kB [12451.878812] oom02 invoked oom-killer: gfp_mask=0x280da, order=0, oom_score_adj=0 [12451.878815] oom02 cpuset=/ mems_allowed=0-1 [12451.878818] Pid: 12818, comm: oom02 Tainted: G W 3.7.0-rc6numacorev17+ #5 [12451.878819] Call Trace: [12451.878829] [<ffffffff810d92d1>] ? cpuset_print_task_mems_allowed+0x91/0xa0 [12451.878834] [<ffffffff815dd3b6>] dump_header.isra.12+0x70/0x19b [12451.878838] [<ffffffff812e37d3>] ? ___ratelimit+0xa3/0x120 [12451.878843] [<ffffffff81139c0d>] oom_kill_process+0x1cd/0x320 [12451.878848] [<ffffffff8106d3c5>] ? has_ns_capability_noaudit+0x15/0x20 [12451.878850] [<ffffffff8113a377>] out_of_memory+0x447/0x480 [12451.878853] [<ffffffff8113ff5c>] __alloc_pages_nodemask+0x94c/0x960 [12451.878858] [<ffffffff8117b1a6>] alloc_pages_vma+0xb6/0x190 [12451.878861] [<ffffffff8115e094>] handle_pte_fault+0x8f4/0xb90 [12451.878865] [<ffffffff810fa237>] ? call_rcu_sched+0x17/0x20 [12451.878868] [<ffffffff8118ed82>] ? put_filp+0x52/0x60 [12451.878870] [<ffffffff8115e619>] handle_mm_fault+0x149/0x210 [12451.878873] [<ffffffff815ec9c2>] __do_page_fault+0x172/0x4e0 [12451.878875] [<ffffffff81183060>] ? kmem_cache_free+0x20/0x160 [12451.878878] [<ffffffff81198396>] ? final_putname+0x26/0x50 [12451.878880] [<ffffffff815ecd3e>] do_page_fault+0xe/0x10 [12451.878883] [<ffffffff815e9358>] page_fault+0x28/0x30 --------------- snip ------------------ -------------- snip ------------------ [12451.956997] [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name [12451.957010] [ 303] 0 303 9750 296 23 414 -1000 systemd-udevd [12451.957013] [ 448] 0 448 6558 224 13 35 -1000 auditd [12451.957017] [ 519] 0 519 24696 82 15 20 0 iscsiuio [12451.957019] [ 529] 81 529 8201 389 27 35 -900 dbus-daemon [12451.957021] [ 530] 0 530 1264 94 9 15 0 iscsid [12451.957022] [ 531] 0 531 1389 876 9 0 -17 iscsid [12451.957024] [ 538] 0 538 1608 158 10 28 0 mcelog [12451.957026] [ 543] 0 543 5906 138 16 48 0 atd [12451.957028] [ 551] 0 551 30146 301 22 56 0 crond [12451.957029] [ 569] 0 569 26612 224 83 184 0 login [12451.957031] [ 587] 0 587 110177 922 92 45 0 NetworkManager [12451.957033] [ 643] 0 643 21931 290 65 120 -900 modem-manager [12451.957035] [ 644] 0 644 5812 222 16 61 0 bluetoothd [12451.957036] [ 672] 0 672 118388 469 179 935 0 libvirtd [12451.957038] [ 691] 0 691 20059 229 40 177 -1000 sshd [12451.957040] [ 996] 0 996 28975 654 18 186 0 bash [12451.957042] [ 1198] 0 1198 88549 5958 185 6738 -900 setroubleshootd [12451.957045] [ 2332] 0 2332 74107 3897 152 0 0 systemd-journal [12451.957047] [ 2335] 0 2335 8222 388 20 0 0 systemd-logind [12451.957049] [20909] 0 20909 61311 456 22 0 0 rsyslogd [12451.957052] [12818] 0 12818 788031 6273 24 0 0 oom02 [12451.957054] [13217] 0 13217 33221 1188 67 0 0 sshd [12451.957055] [13221] 0 13221 28949 879 19 0 0 bash [12451.957057] [13388] 0 13388 36864 1063 45 0 0 vim [12451.957059] [13410] 0 13410 33476 510 58 0 -900 nm-dispatcher.a [12451.957061] Out of memory: Kill process 2335 (systemd-logind) score 0 or sacrifice child -------------------- snip ---------------------------- also I found oom-killer performed bad on numa/core tree, you can use LTP: testcases/kernel/mem/oom/oom* to verify it. please let me know if you need more details or any other testing works. Thanks, Zhouping -- 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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