J'étudie pourquoi deux de nos processus ont été tués par le tueur Linux OOM - même s'il semble y avoir eu suffisamment de RAM et beaucoup de SWAP disponibles aux deux moments.
Lorsque je l'interprète comme par cette réponse, la première demande de mémoire a demandé 2 ^ 2 = 4 pages (16 Ko) de mémoire (indicateur de commande) et a voulu qu'elle provienne de la zone "Normal".
Jan 27 04:26:14 kernel: [639964.652706] java invoked oom-killer: gfp_mask=0x26000c0, order=2, oom_score_adj=0
Et si j'analyse correctement la sortie, il y a plus qu'assez d'espace:
Node 0 Normal free:178144kB min:55068kB low:68832kB high:82600kB
La deuxième fois a la même demande quelques minutes plus tard - et il semble également y avoir suffisamment d'espace disponible.
Pourquoi le tueur OOM a-t-il été déclenché alors? Suis-je en train de mal analyser les informations?
- Le système est un Ubuntu 14.04 avec le noyau 4.4.0-59 x64
- Le
vm.overcommit_memoryparamètre est défini sur "0" ( heuristique ) qui peut ne pas être optimal.
Première instance:
Jan 27 04:26:14 kernel: [639964.652706] java invoked oom-killer: gfp_mask=0x26000c0, order=2, oom_score_adj=0
Jan 27 04:26:14 kernel: [639964.652711] java cpuset=/ mems_allowed=0
Jan 27 04:26:14 kernel: [639964.652716] CPU: 5 PID: 2152 Comm: java Not tainted 4.4.0-59-generic #80~14.04.1-Ubuntu
Jan 27 04:26:14 kernel: [639964.652717] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 06/22/2012
Jan 27 04:26:14 kernel: [639964.652719] 0000000000000000 ffff88041a963b38 ffffffff813dbd6c ffff88041a963cf0
Jan 27 04:26:14 kernel: [639964.652721] 0000000000000000 ffff88041a963bc8 ffffffff811fafc6 0000000000000000
Jan 27 04:26:14 kernel: [639964.652722] 0000000000000000 0000000000000000 ffff88042a6d1b88 0000000000000015
Jan 27 04:26:14 kernel: [639964.652724] Call Trace:
Jan 27 04:26:14 kernel: [639964.652731] [<ffffffff813dbd6c>] dump_stack+0x63/0x87
Jan 27 04:26:14 kernel: [639964.652736] [<ffffffff811fafc6>] dump_header+0x5b/0x1d5
Jan 27 04:26:14 kernel: [639964.652741] [<ffffffff813766f1>] ? apparmor_capable+0xd1/0x180
Jan 27 04:26:14 kernel: [639964.652746] [<ffffffff81188b35>] oom_kill_process+0x205/0x3d0
Jan 27 04:26:14 kernel: [639964.652747] [<ffffffff8118916b>] out_of_memory+0x40b/0x460
Jan 27 04:26:14 kernel: [639964.652749] [<ffffffff811fba7f>] __alloc_pages_slowpath.constprop.87+0x742/0x7ad
Jan 27 04:26:14 kernel: [639964.652752] [<ffffffff8118e167>] __alloc_pages_nodemask+0x237/0x240
Jan 27 04:26:14 kernel: [639964.652754] [<ffffffff8118e32d>] alloc_kmem_pages_node+0x4d/0xd0
Jan 27 04:26:14 kernel: [639964.652758] [<ffffffff8107c125>] copy_process+0x185/0x1ce0
Jan 27 04:26:14 kernel: [639964.652763] [<ffffffff810fd0b4>] ? do_futex+0xf4/0x520
Jan 27 04:26:14 kernel: [639964.652766] [<ffffffff810a71c9>] ? resched_curr+0xa9/0xd0
Jan 27 04:26:14 kernel: [639964.652768] [<ffffffff8107de1a>] _do_fork+0x8a/0x310
Jan 27 04:26:14 kernel: [639964.652769] [<ffffffff8107e149>] SyS_clone+0x19/0x20
Jan 27 04:26:14 kernel: [639964.652775] [<ffffffff81802c76>] entry_SYSCALL_64_fastpath+0x16/0x75
Jan 27 04:26:14 kernel: [639964.652776] Mem-Info:
Jan 27 04:26:14 kernel: [639964.652780] active_anon:1596719 inactive_anon:281182 isolated_anon:0
Jan 27 04:26:14 kernel: [639964.652780] active_file:953586 inactive_file:952370 isolated_file:0
Jan 27 04:26:14 kernel: [639964.652780] unevictable:0 dirty:7358 writeback:0 unstable:0
Jan 27 04:26:14 kernel: [639964.652780] slab_reclaimable:217903 slab_unreclaimable:12162
Jan 27 04:26:14 kernel: [639964.652780] mapped:40068 shmem:34861 pagetables:8261 bounce:0
Jan 27 04:26:14 kernel: [639964.652780] free:71705 free_pcp:0 free_cma:0
Jan 27 04:26:14 kernel: [639964.652783] Node 0 DMA free:15892kB min:64kB low:80kB high:96kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15992kB managed:15908kB 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_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
Jan 27 04:26:14 kernel: [639964.652787] lowmem_reserve[]: 0 2951 16005 16005 16005
Jan 27 04:26:14 kernel: [639964.652789] Node 0 DMA32 free:92784kB min:12448kB low:15560kB high:18672kB active_anon:1094416kB inactive_anon:368444kB active_file:579188kB inactive_file:561504kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3129216kB managed:3048784kB mlocked:0kB dirty:1188kB writeback:0kB mapped:32604kB shmem:27372kB slab_reclaimable:336288kB slab_unreclaimable:7196kB kernel_stack:1520kB pagetables:3964kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Jan 27 04:26:14 kernel: [639964.652793] lowmem_reserve[]: 0 0 13054 13054 13054
Jan 27 04:26:14 kernel: [639964.652795] Node 0 Normal free:178144kB min:55068kB low:68832kB high:82600kB active_anon:5292460kB inactive_anon:756284kB active_file:3235156kB inactive_file:3247976kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:13631488kB managed:13367448kB mlocked:0kB dirty:28244kB writeback:0kB mapped:127668kB shmem:112072kB slab_reclaimable:535324kB slab_unreclaimable:41436kB kernel_stack:3968kB pagetables:29080kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:128 all_unreclaimable? no
Jan 27 04:26:14 kernel: [639964.652798] lowmem_reserve[]: 0 0 0 0 0
Jan 27 04:26:14 kernel: [639964.652800] Node 0 DMA: 1*4kB (U) 0*8kB 1*16kB (U) 0*32kB 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15892kB
Jan 27 04:26:14 kernel: [639964.652807] Node 0 DMA32: 18127*4kB (UME) 2601*8kB (UME) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 93316kB
Jan 27 04:26:14 kernel: [639964.652814] Node 0 Normal: 32943*4kB (UMEH) 5702*8kB (UMEH) 19*16kB (H) 13*32kB (H) 9*64kB (H) 2*128kB (H) 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 178940kB
Jan 27 04:26:14 kernel: [639964.652820] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Jan 27 04:26:14 kernel: [639964.652821] 1949078 total pagecache pages
Jan 27 04:26:14 kernel: [639964.652822] 8225 pages in swap cache
Jan 27 04:26:14 kernel: [639964.652824] Swap cache stats: add 1131771, delete 1123546, find 7366438/7540102
Jan 27 04:26:14 kernel: [639964.652824] Free swap = 4080988kB
Jan 27 04:26:14 kernel: [639964.652825] Total swap = 4194300kB
Jan 27 04:26:14 kernel: [639964.652826] 4194174 pages RAM
Jan 27 04:26:14 kernel: [639964.652826] 0 pages HighMem/MovableOnly
Jan 27 04:26:14 kernel: [639964.652827] 86139 pages reserved
Jan 27 04:26:14 kernel: [639964.652828] 0 pages cma reserved
Jan 27 04:26:14 kernel: [639964.652828] 0 pages hwpoisoned
Jan 27 04:26:14 kernel: [639964.652829] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
Jan 27 04:26:14 kernel: [639964.652834] [ 424] 0 424 4909 388 14 3 68 0 upstart-udev-br
Jan 27 04:26:14 kernel: [639964.652836] [ 439] 0 439 13075 456 29 3 322 -1000 systemd-udevd
Jan 27 04:26:14 kernel: [639964.652839] [ 724] 0 724 3816 226 13 3 53 0 upstart-socket-
Jan 27 04:26:14 kernel: [639964.652840] [ 813] 0 813 5856 449 16 3 57 0 rpcbind
Jan 27 04:26:14 kernel: [639964.652842] [ 865] 108 865 5386 456 16 3 113 0 rpc.statd
Jan 27 04:26:14 kernel: [639964.652844] [ 1034] 0 1034 3820 281 12 3 35 0 upstart-file-br
Jan 27 04:26:14 kernel: [639964.652846] [ 1041] 102 1041 9817 366 23 3 50 0 dbus-daemon
Jan 27 04:26:14 kernel: [639964.652847] [ 1045] 101 1045 65018 1203 31 3 384 0 rsyslogd
Jan 27 04:26:14 kernel: [639964.652849] [ 1056] 0 1056 10870 525 26 4 49 0 systemd-logind
Jan 27 04:26:14 kernel: [639964.652851] [ 1063] 0 1063 5870 0 16 3 53 0 rpc.idmapd
Jan 27 04:26:14 kernel: [639964.652852] [ 1153] 0 1153 2558 371 9 3 517 0 dhclient
Jan 27 04:26:14 kernel: [639964.652854] [ 1374] 0 1374 3955 401 13 3 40 0 getty
Jan 27 04:26:14 kernel: [639964.652855] [ 1377] 0 1377 3955 406 13 3 38 0 getty
Jan 27 04:26:14 kernel: [639964.652857] [ 1383] 0 1383 3955 406 13 3 39 0 getty
Jan 27 04:26:14 kernel: [639964.652858] [ 1384] 0 1384 3955 418 13 3 37 0 getty
Jan 27 04:26:14 kernel: [639964.652859] [ 1386] 0 1386 3955 418 12 3 38 0 getty
Jan 27 04:26:14 kernel: [639964.652861] [ 1403] 0 1403 15346 735 34 3 142 -1000 sshd
Jan 27 04:26:14 kernel: [639964.652863] [ 1436] 0 1436 4825 408 13 3 28 0 irqbalance
Jan 27 04:26:14 kernel: [639964.652864] [ 1440] 0 1440 1093 379 8 3 35 0 acpid
Jan 27 04:26:14 kernel: [639964.652866] [ 1442] 0 1442 4785 176 14 3 38 0 atd
Jan 27 04:26:14 kernel: [639964.652867] [ 1443] 0 1443 5914 466 17 3 43 0 cron
Jan 27 04:26:14 kernel: [639964.652869] [ 1464] 105 1464 61957 3600 59 3 273 -900 postgres
Jan 27 04:26:14 kernel: [639964.652870] [ 1561] 107 1561 7864 657 21 3 113 0 ntpd
Jan 27 04:26:14 kernel: [639964.652872] [ 1762] 105 1762 62036 35419 117 3 264 0 postgres
Jan 27 04:26:14 kernel: [639964.652873] [ 1763] 105 1763 61957 35051 117 3 266 0 postgres
Jan 27 04:26:14 kernel: [639964.652875] [ 1764] 105 1764 61957 1773 52 3 306 0 postgres
Jan 27 04:26:14 kernel: [639964.652877] [ 1765] 105 1765 62166 4999 116 3 374 0 postgres
Jan 27 04:26:14 kernel: [639964.652878] [ 1766] 105 1766 25910 617 48 3 274 0 postgres
Jan 27 04:26:14 kernel: [639964.652880] [ 1834] 1004 1834 2002886 692615 1549 10 12707 0 java
Jan 27 04:26:14 kernel: [639964.652881] [ 1921] 106 1921 5835 452 16 3 112 0 nrpe
Jan 27 04:26:14 kernel: [639964.652883] [ 1943] 0 1943 175986 420 41 4 50 0 nscd
Jan 27 04:26:14 kernel: [639964.652884] [ 1978] 109 1978 111112 309 48 4 213 0 nslcd
Jan 27 04:26:14 kernel: [639964.652886] [ 2007] 8 2007 3172 326 11 3 52 0 nullmailer-send
Jan 27 04:26:14 kernel: [639964.652887] [ 2092] 0 2092 34005 1947 70 3 3067 0 /usr/bin/monito
Jan 27 04:26:14 kernel: [639964.652889] [ 2110] 0 2110 1901 367 9 3 25 0 getty
Jan 27 04:26:14 kernel: [639964.652891] [ 2146] 65534 2146 34005 1101 67 3 3810 0 monitorix-httpd
Jan 27 04:26:14 kernel: [639964.652893] [24525] 105 24525 1826264 1151331 3568 10 299 0 postgres
Jan 27 04:26:14 kernel: [639964.652895] [20380] 105 20380 62511 36514 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652897] [21273] 105 21273 62532 36508 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652898] [22133] 105 22133 62610 36827 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652900] [22135] 105 22135 62541 34994 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652901] [22428] 0 22428 15436 739 35 4 11 0 cron
Jan 27 04:26:14 kernel: [639964.652903] [22429] 0 22429 15489 749 35 4 12 0 cron
Jan 27 04:26:14 kernel: [639964.652904] [22442] 0 22442 1112 198 8 3 0 0 sh
Jan 27 04:26:14 kernel: [639964.652906] [22443] 1004 22443 1112 191 8 3 0 0 sh
Jan 27 04:26:14 kernel: [639964.652908] [22444] 1004 22444 3102 748 11 3 0 0 syncDaily.sh
Jan 27 04:26:14 kernel: [639964.652909] [22445] 0 22445 1112 420 8 3 0 0 cron-apt
Jan 27 04:26:14 kernel: [639964.652911] [22465] 1004 22465 55074 10532 113 3 0 0 rsync
Jan 27 04:26:14 kernel: [639964.652912] [22466] 0 22466 1087 171 8 3 0 0 sleep
Jan 27 04:26:14 kernel: [639964.652914] [22467] 1004 22467 29820 9151 62 3 0 0 rsync
Jan 27 04:26:14 kernel: [639964.652915] [22468] 1004 22468 61770 7168 125 3 0 0 rsync
Jan 27 04:26:14 kernel: [639964.652917] [22990] 105 22990 62490 35099 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652919] [23138] 105 23138 62491 35578 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652920] [23139] 105 23139 62690 36657 121 3 236 0 postgres
Jan 27 04:26:14 kernel: [639964.652922] [23140] 105 23140 62455 32973 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652923] [23631] 105 23631 62518 34978 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652925] [23635] 105 23635 62506 35193 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652927] [23636] 105 23636 62455 30085 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652928] [23637] 105 23637 62470 33106 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652930] [23639] 105 23639 62511 34295 120 3 237 0 postgres
Jan 27 04:26:14 kernel: [639964.652940] Out of memory: Kill process 24525 (postgres) score 224 or sacrifice child
Jan 27 04:26:14 kernel: [639964.652975] Killed process 24525 (postgres) total-vm:7305056kB, anon-rss:4460244kB, file-rss:145080kB
Instance deux
Jan 27 04:34:36 kernel: [640466.131656] java invoked oom-killer: gfp_mask=0x26000c0, order=2, oom_score_adj=0
Jan 27 04:34:36 kernel: [640466.131660] java cpuset=/ mems_allowed=0
Jan 27 04:34:36 kernel: [640466.131665] CPU: 7 PID: 2152 Comm: java Not tainted 4.4.0-59-generic #80~14.04.1-Ubuntu
Jan 27 04:34:36 kernel: [640466.131666] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 06/22/2012
Jan 27 04:34:36 kernel: [640466.131668] 0000000000000000 ffff88041a963b38 ffffffff813dbd6c ffff88041a963cf0
Jan 27 04:34:36 kernel: [640466.131670] 0000000000000000 ffff88041a963bc8 ffffffff811fafc6 0000000000000000
Jan 27 04:34:36 kernel: [640466.131671] 0000000000000000 0000000000000000 ffff88042a6d1b88 0000000000000015
Jan 27 04:34:36 kernel: [640466.131673] Call Trace:
Jan 27 04:34:36 kernel: [640466.131698] [<ffffffff813dbd6c>] dump_stack+0x63/0x87
Jan 27 04:34:36 kernel: [640466.131712] [<ffffffff811fafc6>] dump_header+0x5b/0x1d5
Jan 27 04:34:36 kernel: [640466.131721] [<ffffffff813766f1>] ? apparmor_capable+0xd1/0x180
Jan 27 04:34:36 kernel: [640466.131728] [<ffffffff81188b35>] oom_kill_process+0x205/0x3d0
Jan 27 04:34:36 kernel: [640466.131730] [<ffffffff8118916b>] out_of_memory+0x40b/0x460
Jan 27 04:34:36 kernel: [640466.131732] [<ffffffff811fba7f>] __alloc_pages_slowpath.constprop.87+0x742/0x7ad
Jan 27 04:34:36 kernel: [640466.131734] [<ffffffff8118e167>] __alloc_pages_nodemask+0x237/0x240
Jan 27 04:34:36 kernel: [640466.131736] [<ffffffff8118e32d>] alloc_kmem_pages_node+0x4d/0xd0
Jan 27 04:34:36 kernel: [640466.131745] [<ffffffff8107c125>] copy_process+0x185/0x1ce0
Jan 27 04:34:36 kernel: [640466.131755] [<ffffffff810fd0b4>] ? do_futex+0xf4/0x520
Jan 27 04:34:36 kernel: [640466.131761] [<ffffffff810a71c9>] ? resched_curr+0xa9/0xd0
Jan 27 04:34:36 kernel: [640466.131763] [<ffffffff8107de1a>] _do_fork+0x8a/0x310
Jan 27 04:34:36 kernel: [640466.131765] [<ffffffff8107e149>] SyS_clone+0x19/0x20
Jan 27 04:34:36 kernel: [640466.131779] [<ffffffff81802c76>] entry_SYSCALL_64_fastpath+0x16/0x75
Jan 27 04:34:36 kernel: [640466.131781] Mem-Info:
Jan 27 04:34:36 kernel: [640466.131784] active_anon:463046 inactive_anon:339934 isolated_anon:0
Jan 27 04:34:36 kernel: [640466.131784] active_file:1074992 inactive_file:1398029 isolated_file:0
Jan 27 04:34:36 kernel: [640466.131784] unevictable:0 dirty:1307 writeback:0 unstable:0
Jan 27 04:34:36 kernel: [640466.131784] slab_reclaimable:626085 slab_unreclaimable:26239
Jan 27 04:34:36 kernel: [640466.131784] mapped:40618 shmem:35429 pagetables:4038 bounce:0
Jan 27 04:34:36 kernel: [640466.131784] free:161367 free_pcp:0 free_cma:0
Jan 27 04:34:36 kernel: [640466.131788] Node 0 DMA free:15892kB min:64kB low:80kB high:96kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15992kB managed:15908kB 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_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
Jan 27 04:34:36 kernel: [640466.131792] lowmem_reserve[]: 0 2951 16005 16005 16005
Jan 27 04:34:36 kernel: [640466.131794] Node 0 DMA32 free:112056kB min:12448kB low:15560kB high:18672kB active_anon:465908kB inactive_anon:478436kB active_file:620808kB inactive_file:963844kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:3129216kB managed:3048784kB mlocked:0kB dirty:844kB writeback:0kB mapped:11132kB shmem:5644kB slab_reclaimable:390764kB slab_unreclaimable:8488kB kernel_stack:1408kB pagetables:2304kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Jan 27 04:34:36 kernel: [640466.131798] lowmem_reserve[]: 0 0 13054 13054 13054
Jan 27 04:34:36 kernel: [640466.131800] Node 0 Normal free:517520kB min:55068kB low:68832kB high:82600kB active_anon:1386276kB inactive_anon:881300kB active_file:3679160kB inactive_file:4628272kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:13631488kB managed:13367448kB mlocked:0kB dirty:4384kB writeback:0kB mapped:151340kB shmem:136072kB slab_reclaimable:2113576kB slab_unreclaimable:96452kB kernel_stack:3904kB pagetables:13848kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Jan 27 04:34:36 kernel: [640466.131803] lowmem_reserve[]: 0 0 0 0 0
Jan 27 04:34:36 kernel: [640466.131805] Node 0 DMA: 1*4kB (U) 0*8kB 1*16kB (U) 0*32kB 2*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 1*1024kB (U) 1*2048kB (M) 3*4096kB (M) = 15892kB
Jan 27 04:34:36 kernel: [640466.131812] Node 0 DMA32: 20157*4kB (UME) 4165*8kB (UME) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 113948kB
Jan 27 04:34:36 kernel: [640466.131817] Node 0 Normal: 119665*4kB (UMEH) 4706*8kB (UMEH) 12*16kB (H) 13*32kB (H) 10*64kB (H) 2*128kB (H) 1*256kB (H) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 518068kB
Jan 27 04:34:36 kernel: [640466.131824] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
Jan 27 04:34:36 kernel: [640466.131825] 2516698 total pagecache pages
Jan 27 04:34:36 kernel: [640466.131826] 8199 pages in swap cache
Jan 27 04:34:36 kernel: [640466.131828] Swap cache stats: add 1131970, delete 1123771, find 7374629/7548428
Jan 27 04:34:36 kernel: [640466.131828] Free swap = 4085700kB
Jan 27 04:34:36 kernel: [640466.131829] Total swap = 4194300kB
Jan 27 04:34:36 kernel: [640466.131830] 4194174 pages RAM
Jan 27 04:34:36 kernel: [640466.131830] 0 pages HighMem/MovableOnly
Jan 27 04:34:36 kernel: [640466.131831] 86139 pages reserved
Jan 27 04:34:36 kernel: [640466.131832] 0 pages cma reserved
Jan 27 04:34:36 kernel: [640466.131832] 0 pages hwpoisoned
Jan 27 04:34:36 kernel: [640466.131833] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
Jan 27 04:34:36 kernel: [640466.131838] [ 424] 0 424 4909 388 14 3 68 0 upstart-udev-br
Jan 27 04:34:36 kernel: [640466.131841] [ 439] 0 439 13075 456 29 3 322 -1000 systemd-udevd
Jan 27 04:34:36 kernel: [640466.131843] [ 724] 0 724 3816 226 13 3 53 0 upstart-socket-
Jan 27 04:34:36 kernel: [640466.131845] [ 813] 0 813 5856 449 16 3 57 0 rpcbind
Jan 27 04:34:36 kernel: [640466.131846] [ 865] 108 865 5386 456 16 3 113 0 rpc.statd
Jan 27 04:34:36 kernel: [640466.131848] [ 1034] 0 1034 3820 281 12 3 35 0 upstart-file-br
Jan 27 04:34:36 kernel: [640466.131850] [ 1041] 102 1041 9817 366 23 3 50 0 dbus-daemon
Jan 27 04:34:36 kernel: [640466.131852] [ 1045] 101 1045 65018 1255 31 3 362 0 rsyslogd
Jan 27 04:34:36 kernel: [640466.131854] [ 1056] 0 1056 10870 525 26 4 49 0 systemd-logind
Jan 27 04:34:36 kernel: [640466.131855] [ 1063] 0 1063 5870 0 16 3 53 0 rpc.idmapd
Jan 27 04:34:36 kernel: [640466.131857] [ 1153] 0 1153 2558 371 9 3 517 0 dhclient
Jan 27 04:34:36 kernel: [640466.131858] [ 1374] 0 1374 3955 401 13 3 40 0 getty
Jan 27 04:34:36 kernel: [640466.131860] [ 1377] 0 1377 3955 406 13 3 38 0 getty
Jan 27 04:34:36 kernel: [640466.131861] [ 1383] 0 1383 3955 406 13 3 39 0 getty
Jan 27 04:34:36 kernel: [640466.131863] [ 1384] 0 1384 3955 418 13 3 37 0 getty
Jan 27 04:34:36 kernel: [640466.131864] [ 1386] 0 1386 3955 418 12 3 38 0 getty
Jan 27 04:34:36 kernel: [640466.131866] [ 1403] 0 1403 15346 735 34 3 142 -1000 sshd
Jan 27 04:34:36 kernel: [640466.131868] [ 1436] 0 1436 4825 408 13 3 28 0 irqbalance
Jan 27 04:34:36 kernel: [640466.131869] [ 1440] 0 1440 1093 379 8 3 35 0 acpid
Jan 27 04:34:36 kernel: [640466.131871] [ 1442] 0 1442 4785 176 14 3 38 0 atd
Jan 27 04:34:36 kernel: [640466.131872] [ 1443] 0 1443 5914 466 17 3 43 0 cron
Jan 27 04:34:36 kernel: [640466.131874] [ 1464] 105 1464 61957 4409 59 3 254 -900 postgres
Jan 27 04:34:36 kernel: [640466.131876] [ 1561] 107 1561 7864 657 21 3 113 0 ntpd
Jan 27 04:34:36 kernel: [640466.131877] [ 1834] 1004 1834 2002886 692883 1549 10 12598 0 java
Jan 27 04:34:36 kernel: [640466.131879] [ 1921] 106 1921 5835 452 16 3 112 0 nrpe
Jan 27 04:34:36 kernel: [640466.131880] [ 1943] 0 1943 175986 420 41 4 50 0 nscd
Jan 27 04:34:36 kernel: [640466.131882] [ 1978] 109 1978 111112 309 48 4 213 0 nslcd
Jan 27 04:34:36 kernel: [640466.131883] [ 2007] 8 2007 3172 326 11 3 52 0 nullmailer-send
Jan 27 04:34:36 kernel: [640466.131885] [ 2092] 0 2092 34005 1947 70 3 3067 0 /usr/bin/monito
Jan 27 04:34:36 kernel: [640466.131887] [ 2110] 0 2110 1901 367 9 3 25 0 getty
Jan 27 04:34:36 kernel: [640466.131888] [ 2146] 65534 2146 34005 1101 67 3 3810 0 monitorix-httpd
Jan 27 04:34:36 kernel: [640466.131891] [22428] 0 22428 15436 739 35 4 11 0 cron
Jan 27 04:34:36 kernel: [640466.131892] [22429] 0 22429 15489 749 35 4 12 0 cron
Jan 27 04:34:36 kernel: [640466.131894] [22442] 0 22442 1112 198 8 3 0 0 sh
Jan 27 04:34:36 kernel: [640466.131895] [22443] 1004 22443 1112 191 8 3 0 0 sh
Jan 27 04:34:36 kernel: [640466.131897] [22444] 1004 22444 3102 748 11 3 0 0 syncDaily.sh
Jan 27 04:34:36 kernel: [640466.131899] [22445] 0 22445 1112 420 8 3 0 0 cron-apt
Jan 27 04:34:36 kernel: [640466.131900] [22465] 1004 22465 54754 27012 113 3 0 0 rsync
Jan 27 04:34:36 kernel: [640466.131902] [22466] 0 22466 1087 171 8 3 0 0 sleep
Jan 27 04:34:36 kernel: [640466.131903] [22467] 1004 22467 34234 26953 72 3 0 0 rsync
Jan 27 04:34:36 kernel: [640466.131905] [22468] 1004 22468 62154 15613 126 3 0 0 rsync
Jan 27 04:34:36 kernel: [640466.131907] [24170] 105 24170 61990 34251 117 3 237 0 postgres
Jan 27 04:34:36 kernel: [640466.131908] [24171] 105 24171 61957 33191 115 3 238 0 postgres
Jan 27 04:34:36 kernel: [640466.131910] [24172] 105 24172 61957 1190 52 3 238 0 postgres
Jan 27 04:34:36 kernel: [640466.131911] [24173] 105 24173 62166 1333 54 3 239 0 postgres
Jan 27 04:34:36 kernel: [640466.131913] [24174] 105 24174 25876 642 48 3 242 0 postgres
Jan 27 04:34:36 kernel: [640466.131915] [24175] 105 24175 62464 35199 120 3 232 0 postgres
Jan 27 04:34:36 kernel: [640466.131916] [24203] 105 24203 62467 22296 120 3 232 0 postgres
Jan 27 04:34:36 kernel: [640466.131918] [24266] 105 24266 62475 36452 120 3 232 0 postgres
Jan 27 04:34:36 kernel: [640466.131920] [24317] 105 24317 62424 17702 119 3 232 0 postgres
Jan 27 04:34:36 kernel: [640466.131921] [24318] 105 24318 62449 24858 120 3 232 0 postgres
Jan 27 04:34:36 kernel: [640466.131923] [24320] 105 24320 62485 24779 120 3 232 0 postgres
Jan 27 04:34:36 kernel: [640466.131925] [24321] 105 24321 62449 27595 120 3 232 0 postgres
Jan 27 04:34:36 kernel: [640466.131926] [24452] 105 24452 62484 16118 120 3 232 0 postgres
Jan 27 04:34:36 kernel: [640466.131928] Out of memory: Kill process 1834 (java) score 137 or sacrifice child
Jan 27 04:34:36 kernel: [640466.132070] Killed process 1834 (java) total-vm:8011544kB, anon-rss:2763340kB, file-rss:8192kB
Voir l'excellente réponse de Matthew Ife au dupe serverfault.com/a/762327/9517
—
user9517
@istheEnglishway Est-ce vraiment une dupe? Notre demande concerne la "zone normale" (gfp se terminant par zéro) et la sortie répertorie une telle zone. Alors que dans la dupe que vous avez référencée, elle fait référence à une zone mémoire différente (HighMem) qui n'est pas présente dans la sortie ...
—
Patrick
Il convient de noter que même s'il y a suffisamment de mémoire libre, il n'est pas garanti qu'il y aura 16 Ko contigus. Je ne sais pas si cela s'applique ici ou non.
—
kasperd
Correct, mais si j'analyse la sortie à droite, il devrait y avoir plusieurs blocs de 16 Ko disponibles: "19 * 16 Ko (H)" pour la première occurrence. J'ai peut-être trouvé un bogue de noyau pertinent, je le posterai comme réponse (possible).
—
Patrick