De repente, comecei a travar logo depois de adicionar cerca de um milhão de arquivos do meu servidor a uma das pastas da minha partição truecrypt.
A parte estranha é que isso acontece todas as noites por volta da 1h da manhã... verifiquei meus crons e nada está rodando naquele horário.
Aqui estão algumas informações do meu arquivo kern.log da noite passada:
Dec 20 01:01:58 Lubuntu kernel: [142653.102582] lightdm-gtk-gre invoked oom-killer: gfp_mask=0x44d0, order=2, oom_adj=0, oom_score_adj=0
Dec 20 01:01:58 Lubuntu kernel: [142653.102588] lightdm-gtk-gre cpuset=/ mems_allowed=0
Dec 20 01:01:58 Lubuntu kernel: [142653.102591] Pid: 1786, comm: lightdm-gtk-gre Tainted: G O 3.5.0-17-generic #28-Ubuntu
Dec 20 01:01:58 Lubuntu kernel: [142653.102593] Call Trace:
Dec 20 01:01:58 Lubuntu kernel: [142653.102602] [<c15c01c4>] dump_header.isra.10+0x86/0x1b4
Dec 20 01:01:58 Lubuntu kernel: [142653.102607] [<c1104a1a>] oom_kill_process+0x23a/0x270
Dec 20 01:01:58 Lubuntu kernel: [142653.102611] [<c1104b3e>] ? select_bad_process.constprop.15+0xee/0x170
Dec 20 01:01:58 Lubuntu kernel: [142653.102614] [<c1104f53>] out_of_memory+0x163/0x1c0
Dec 20 01:01:58 Lubuntu kernel: [142653.102617] [<c1108abf>] __alloc_pages_nodemask+0x68f/0x750
Dec 20 01:01:58 Lubuntu kernel: [142653.102621] [<c1108bfc>] __get_free_pages+0x1c/0x40
Dec 20 01:01:58 Lubuntu kernel: [142653.102625] [<c113dd82>] kmalloc_order_trace+0x22/0x90
Dec 20 01:01:58 Lubuntu kernel: [142653.102628] [<c114008a>] __kmalloc_track_caller+0x14a/0x160
Dec 20 01:01:58 Lubuntu kernel: [142653.102631] [<c113df88>] ? kmem_cache_alloc+0xe8/0x120
Dec 20 01:01:58 Lubuntu kernel: [142653.102636] [<c14caf2f>] ? sock_alloc_send_pskb+0x17f/0x2b0
Dec 20 01:01:58 Lubuntu kernel: [142653.102639] [<c14cfb65>] __alloc_skb+0x55/0x200
Dec 20 01:01:58 Lubuntu kernel: [142653.102642] [<c14caf2f>] sock_alloc_send_pskb+0x17f/0x2b0
Dec 20 01:01:58 Lubuntu kernel: [142653.102645] [<c14cb07d>] sock_alloc_send_skb+0x1d/0x30
Dec 20 01:01:58 Lubuntu kernel: [142653.102649] [<c1556cb3>] unix_stream_sendmsg+0x2f3/0x3e0
Dec 20 01:01:58 Lubuntu kernel: [142653.102652] [<c14c74bf>] sock_aio_write+0xff/0x120
Dec 20 01:01:58 Lubuntu kernel: [142653.102655] [<c14c73c0>] ? sock_register+0x90/0x90
Dec 20 01:01:58 Lubuntu kernel: [142653.102659] [<c114f42c>] do_sync_readv_writev+0xac/0xe0
Dec 20 01:01:58 Lubuntu kernel: [142653.102664] [<c125d3f4>] ? security_file_permission+0x24/0xb0
Dec 20 01:01:58 Lubuntu kernel: [142653.102667] [<c114eba3>] ? rw_verify_area+0x63/0x110
Dec 20 01:01:58 Lubuntu kernel: [142653.102670] [<c114f6bf>] do_readv_writev+0x9f/0x190
Dec 20 01:01:58 Lubuntu kernel: [142653.102672] [<c14c73c0>] ? sock_register+0x90/0x90
Dec 20 01:01:58 Lubuntu kernel: [142653.102677] [<c10735a2>] ? check_preempt_curr+0x72/0x90
Dec 20 01:01:58 Lubuntu kernel: [142653.102680] [<c10735e8>] ? ttwu_do_wakeup+0x28/0x110
Dec 20 01:01:58 Lubuntu kernel: [142653.102683] [<c114f7e7>] vfs_writev+0x37/0x60
Dec 20 01:01:58 Lubuntu kernel: [142653.102685] [<c114f94d>] sys_writev+0x3d/0xa0
Dec 20 01:01:58 Lubuntu kernel: [142653.102689] [<c15cff5f>] sysenter_do_call+0x12/0x28
Dec 20 01:01:58 Lubuntu kernel: [142653.102692] [<c15c0000>] ? filter_check_discard.isra.15.part.16+0xb/0x25
Dec 20 01:01:58 Lubuntu kernel: [142653.102694] Mem-Info:
Dec 20 01:01:58 Lubuntu kernel: [142653.102696] DMA per-cpu:
Dec 20 01:01:58 Lubuntu kernel: [142653.102698] CPU 0: hi: 0, btch: 1 usd: 0
Dec 20 01:01:58 Lubuntu kernel: [142653.102699] CPU 1: hi: 0, btch: 1 usd: 0
Dec 20 01:01:58 Lubuntu kernel: [142653.102701] CPU 2: hi: 0, btch: 1 usd: 0
Dec 20 01:01:58 Lubuntu kernel: [142653.102702] CPU 3: hi: 0, btch: 1 usd: 0
Dec 20 01:01:58 Lubuntu kernel: [142653.102704] Normal per-cpu:
Dec 20 01:01:58 Lubuntu kernel: [142653.102705] CPU 0: hi: 186, btch: 31 usd: 0
Dec 20 01:01:58 Lubuntu kernel: [142653.102707] CPU 1: hi: 186, btch: 31 usd: 0
Dec 20 01:01:58 Lubuntu kernel: [142653.102709] CPU 2: hi: 186, btch: 31 usd: 0
Dec 20 01:01:58 Lubuntu kernel: [142653.102710] CPU 3: hi: 186, btch: 31 usd: 0
Dec 20 01:01:58 Lubuntu kernel: [142653.102711] HighMem per-cpu:
Dec 20 01:01:58 Lubuntu kernel: [142653.102713] CPU 0: hi: 186, btch: 31 usd: 17
Dec 20 01:01:58 Lubuntu kernel: [142653.102715] CPU 1: hi: 186, btch: 31 usd: 19
Dec 20 01:01:58 Lubuntu kernel: [142653.102717] CPU 2: hi: 186, btch: 31 usd: 0
Dec 20 01:01:58 Lubuntu kernel: [142653.102718] CPU 3: hi: 186, btch: 31 usd: 19
Dec 20 01:01:58 Lubuntu kernel: [142653.102722] active_anon:109650 inactive_anon:110327 isolated_anon:0
Dec 20 01:01:58 Lubuntu kernel: [142653.102722] active_file:317770 inactive_file:89531 isolated_file:0
Dec 20 01:01:58 Lubuntu kernel: [142653.102722] unevictable:7798 dirty:0 writeback:0 unstable:0
Dec 20 01:01:58 Lubuntu kernel: [142653.102722] free:177821 slab_reclaimable:182861 slab_unreclaimable:6900
Dec 20 01:01:58 Lubuntu kernel: [142653.102722] mapped:565603 shmem:5873 pagetables:3184 bounce:56
Dec 20 01:01:58 Lubuntu kernel: [142653.102729] DMA free:4232kB min:784kB low:980kB high:1176kB active_anon:0kB inactive_anon:0kB active_file:432kB inactive_file:412kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15800kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:10548kB slab_unreclaimable:80kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:76kB writeback_tmp:0kB pages_scanned:3741 all_unreclaimable? yes
Dec 20 01:01:58 Lubuntu kernel: [142653.102731] lowmem_reserve[]: 0 869 6072 6072
Dec 20 01:01:58 Lubuntu kernel: [142653.102739] Normal free:44208kB min:44216kB low:55268kB high:66324kB active_anon:0kB inactive_anon:0kB active_file:4152kB inactive_file:3972kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:890008kB mlocked:0kB dirty:0kB writeback:0kB mapped:4880kB shmem:0kB slab_reclaimable:720896kB slab_unreclaimable:27520kB kernel_stack:3416kB pagetables:756kB unstable:0kB bounce:148kB writeback_tmp:0kB pages_scanned:25082 all_unreclaimable? yes
Dec 20 01:01:58 Lubuntu kernel: [142653.102741] lowmem_reserve[]: 0 0 41626 41626
Dec 20 01:01:58 Lubuntu kernel: [142653.102748] HighMem free:662844kB min:512kB low:66692kB high:132872kB active_anon:438600kB inactive_anon:441308kB active_file:1266496kB inactive_file:353740kB unevictable:31192kB isolated(anon):0kB isolated(file):0kB present:5328224kB mlocked:31192kB dirty:0kB writeback:0kB mapped:2257532kB shmem:23492kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:11980kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no
Dec 20 01:01:58 Lubuntu kernel: [142653.102750] lowmem_reserve[]: 0 0 0 0
Dec 20 01:01:58 Lubuntu kernel: [142653.102754] DMA: 41*4kB 29*8kB 77*16kB 51*32kB 6*64kB 1*128kB 0*256kB 1*512kB 0*1024kB 0*2048kB 0*4096kB = 4284kB
Dec 20 01:01:58 Lubuntu kernel: [142653.102763] Normal: 1764*4kB 1524*8kB 1029*16kB 79*32kB 0*64kB 1*128kB 1*256kB 1*512kB 1*1024kB 0*2048kB 1*4096kB = 44256kB
Dec 20 01:01:58 Lubuntu kernel: [142653.102773] HighMem: 4662*4kB 1936*8kB 842*16kB 5637*32kB 3319*64kB 916*128kB 149*256kB 21*512kB 1*1024kB 1*2048kB 13*4096kB = 662872kB
Dec 20 01:01:58 Lubuntu kernel: [142653.102787] 415373 total pagecache pages
Dec 20 01:01:58 Lubuntu kernel: [142653.102789] 722 pages in swap cache
Dec 20 01:01:58 Lubuntu kernel: [142653.102790] Swap cache stats: add 5238, delete 4516, find 3096/3220
Dec 20 01:01:58 Lubuntu kernel: [142653.102792] Free swap = 1937052kB
Dec 20 01:01:58 Lubuntu kernel: [142653.102793] Total swap = 1953120kB
Dec 20 01:01:58 Lubuntu kernel: [142653.121617] 1703920 pages RAM
Dec 20 01:01:58 Lubuntu kernel: [142653.121622] 1475586 pages HighMem
Dec 20 01:01:58 Lubuntu kernel: [142653.121623] 693511 pages reserved
Dec 20 01:01:58 Lubuntu kernel: [142653.121624] 367083 pages shared
Dec 20 01:01:58 Lubuntu kernel: [142653.121625] 555463 pages non-shared
Dec 20 01:01:58 Lubuntu kernel: [142653.121627] [ pid ] uid tgid total_vm rss cpu oom_adj oom_score_adj name
Dec 20 01:01:58 Lubuntu kernel: [142653.121638] [ 403] 0 403 705 148 3 0 0 upstart-udev-br
Dec 20 01:01:58 Lubuntu kernel: [142653.121642] [ 436] 0 436 843 412 0 -17 -1000 udevd
Dec 20 01:01:58 Lubuntu kernel: [142653.121645] [ 573] 0 573 842 323 2 -17 -1000 udevd
Dec 20 01:01:58 Lubuntu kernel: [142653.121648] [ 574] 0 574 844 321 2 -17 -1000 udevd
Dec 20 01:01:58 Lubuntu kernel: [142653.121651] [ 774] 0 774 704 149 1 0 0 upstart-socket-
Dec 20 01:01:58 Lubuntu kernel: [142653.121654] [ 866] 0 866 1176 240 2 0 0 vsftpd
Dec 20 01:01:58 Lubuntu kernel: [142653.121657] [ 975] 0 975 5740 996 2 0 0 smbd
Dec 20 01:01:58 Lubuntu kernel: [142653.121660] [ 978] 0 978 1673 602 3 -17 -1000 sshd
Dec 20 01:01:58 Lubuntu kernel: [142653.121663] [ 980] 102 980 979 434 2 0 0 dbus-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121666] [ 989] 0 989 3325 439 1 0 0 nmbd
Dec 20 01:01:58 Lubuntu kernel: [142653.121669] [ 1001] 0 1001 5864 334 3 0 0 smbd
Dec 20 01:01:58 Lubuntu kernel: [142653.121672] [ 1052] 0 1052 1854 639 1 0 0 modem-manager
Dec 20 01:01:58 Lubuntu kernel: [142653.121675] [ 1057] 0 1057 1195 337 2 0 0 bluetoothd
Dec 20 01:01:58 Lubuntu kernel: [142653.121678] [ 1067] 0 1067 6299 1327 2 0 0 NetworkManager
Dec 20 01:01:58 Lubuntu kernel: [142653.121682] [ 1081] 101 1081 7768 329 0 0 0 rsyslogd
Dec 20 01:01:58 Lubuntu kernel: [142653.121685] [ 1092] 108 1092 895 425 3 0 0 avahi-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121688] [ 1097] 108 1097 862 106 0 0 0 avahi-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121690] [ 1124] 0 1124 4229 847 3 0 0 cupsd
Dec 20 01:01:58 Lubuntu kernel: [142653.121694] [ 1146] 0 1146 6363 995 2 0 0 polkitd
Dec 20 01:01:58 Lubuntu kernel: [142653.121696] [ 1208] 0 1208 1158 211 1 0 0 getty
Dec 20 01:01:58 Lubuntu kernel: [142653.121699] [ 1214] 0 1214 1158 208 1 0 0 getty
Dec 20 01:01:58 Lubuntu kernel: [142653.121702] [ 1220] 0 1220 1158 211 1 0 0 getty
Dec 20 01:01:58 Lubuntu kernel: [142653.121705] [ 1221] 0 1221 1158 210 1 0 0 getty
Dec 20 01:01:58 Lubuntu kernel: [142653.121708] [ 1224] 0 1224 1158 211 1 0 0 getty
Dec 20 01:01:58 Lubuntu kernel: [142653.121711] [ 1241] 0 1241 544 163 1 0 0 acpid
Dec 20 01:01:58 Lubuntu kernel: [142653.121714] [ 1242] 0 1242 8529 7790 3 0 0 lightdm
Dec 20 01:01:58 Lubuntu kernel: [142653.121717] [ 1252] 0 1252 955 160 3 0 0 irqbalance
Dec 20 01:01:58 Lubuntu kernel: [142653.121720] [ 1261] 0 1261 655 228 3 0 0 cron
Dec 20 01:01:58 Lubuntu kernel: [142653.121723] [ 1262] 0 1262 619 31 1 0 0 atd
Dec 20 01:01:58 Lubuntu kernel: [142653.121725] [ 1265] 107 1265 6483 1119 1 0 0 whoopsie
Dec 20 01:01:58 Lubuntu kernel: [142653.121729] [ 1277] 116 1277 80506 40846 1 0 0 mysqld
Dec 20 01:01:58 Lubuntu kernel: [142653.121731] [ 1327] 103 1327 8876 1018 3 0 0 colord
Dec 20 01:01:58 Lubuntu kernel: [142653.121735] [ 1392] 0 1392 25298 3293 1 0 0 Xorg
Dec 20 01:01:58 Lubuntu kernel: [142653.121738] [ 1608] 117 1608 1938 252 0 0 0 exim4
Dec 20 01:01:58 Lubuntu kernel: [142653.121740] [ 1670] 0 1670 5870 1056 1 0 0 lightdm
Dec 20 01:01:58 Lubuntu kernel: [142653.121743] [ 1673] 0 1673 6183 782 0 0 0 accounts-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121746] [ 1693] 0 1693 8603 889 0 0 0 console-kit-dae
Dec 20 01:01:58 Lubuntu kernel: [142653.121749] [ 1780] 105 1780 558 137 3 0 0 lightdm-greeter
Dec 20 01:01:58 Lubuntu kernel: [142653.121752] [ 1785] 105 1785 845 254 2 0 0 dbus-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121755] [ 1786] 105 1786 27032 3122 2 0 0 lightdm-gtk-gre
Dec 20 01:01:58 Lubuntu kernel: [142653.121758] [ 1788] 105 1788 11091 737 1 0 0 at-spi-bus-laun
Dec 20 01:01:58 Lubuntu kernel: [142653.121761] [ 1792] 105 1792 812 357 1 0 0 dbus-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121764] [ 1795] 105 1795 4272 749 3 0 0 at-spi2-registr
Dec 20 01:01:58 Lubuntu kernel: [142653.121767] [ 1804] 105 1804 6687 656 2 0 0 gvfsd
Dec 20 01:01:58 Lubuntu kernel: [142653.121770] [ 1808] 105 1808 10691 748 2 0 0 gvfsd-fuse
Dec 20 01:01:58 Lubuntu kernel: [142653.121773] [ 1816] 0 1816 7163 926 0 0 0 upowerd
Dec 20 01:01:58 Lubuntu kernel: [142653.121775] [ 1976] 0 1976 640 237 1 0 0 hddtemp
Dec 20 01:01:58 Lubuntu kernel: [142653.121779] [ 2188] 0 2188 10280 1878 2 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121782] [ 2226] 33 2226 10340 1319 0 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121784] [ 2227] 33 2227 10340 1335 1 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121787] [ 2228] 33 2228 10296 1301 3 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121790] [ 2229] 33 2229 10296 1301 1 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121793] [ 2230] 33 2230 10340 1323 2 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121796] [ 2275] 0 2275 1158 209 2 0 0 getty
Dec 20 01:01:58 Lubuntu kernel: [142653.121799] [ 2562] 106 2562 1439 505 3 0 0 ntpd
Dec 20 01:01:58 Lubuntu kernel: [142653.121802] [ 2567] 0 2567 3533 781 1 0 0 lightdm
Dec 20 01:01:58 Lubuntu kernel: [142653.121804] [ 2572] 33 2572 10340 1329 0 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121807] [ 2573] 33 2573 10340 1320 0 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121810] [ 2574] 33 2574 10340 1319 0 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121813] [ 2832] 113 2832 1675 730 1 0 0 nxssh
Dec 20 01:01:58 Lubuntu kernel: [142653.121816] [ 2833] 0 2833 4257 1087 0 0 0 sshd
Dec 20 01:01:58 Lubuntu kernel: [142653.121819] [ 2934] 1000 2934 4257 457 1 0 0 sshd
Dec 20 01:01:58 Lubuntu kernel: [142653.121822] [ 2935] 1000 2935 3734 3226 1 0 0 nxnode
Dec 20 01:01:58 Lubuntu kernel: [142653.121825] [ 2959] 1000 2959 36002 26402 2 0 0 nxagent
Dec 20 01:01:58 Lubuntu kernel: [142653.121828] [ 2961] 113 2961 5200 2747 3 0 0 nxserver
Dec 20 01:01:58 Lubuntu kernel: [142653.121831] [ 2964] 1000 2964 3767 2017 1 0 0 nxnode
Dec 20 01:01:58 Lubuntu kernel: [142653.121833] [ 2974] 1000 2974 12069 1414 1 0 0 lxsession
Dec 20 01:01:58 Lubuntu kernel: [142653.121836] [ 2977] 1000 2977 4482 1937 0 0 0 openbox
Dec 20 01:01:58 Lubuntu kernel: [142653.121839] [ 2982] 1000 2982 48577 3282 0 0 0 lxpanel
Dec 20 01:01:58 Lubuntu kernel: [142653.121842] [ 2983] 1000 2983 1875 592 0 0 0 xscreensaver
Dec 20 01:01:58 Lubuntu kernel: [142653.121845] [ 2985] 1000 2985 31394 3145 2 0 0 pcmanfm
Dec 20 01:01:58 Lubuntu kernel: [142653.121848] [ 2986] 1000 2986 7310 1356 2 0 0 polkit-gnome-au
Dec 20 01:01:58 Lubuntu kernel: [142653.121850] [ 2990] 1000 2990 961 139 2 0 0 dbus-launch
Dec 20 01:01:58 Lubuntu kernel: [142653.121854] [ 2991] 1000 2991 938 308 2 0 0 dbus-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121856] [ 2993] 1000 2993 11092 736 2 0 0 at-spi-bus-laun
Dec 20 01:01:58 Lubuntu kernel: [142653.121859] [ 2994] 1000 2994 7349 1041 0 0 0 xfce4-power-man
Dec 20 01:01:58 Lubuntu kernel: [142653.121862] [ 3001] 1000 3001 12608 2707 1 0 0 update-notifier
Dec 20 01:01:58 Lubuntu kernel: [142653.121865] [ 3005] 1000 3005 812 357 1 0 0 dbus-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121868] [ 3011] 1000 3011 50324 3472 2 0 0 nm-applet
Dec 20 01:01:58 Lubuntu kernel: [142653.121870] [ 3016] 1000 3016 4273 763 0 0 0 at-spi2-registr
Dec 20 01:01:58 Lubuntu kernel: [142653.121873] [ 3019] 1000 3019 1627 597 2 0 0 xfconfd
Dec 20 01:01:58 Lubuntu kernel: [142653.121876] [ 3031] 1000 3031 1487 456 3 0 0 menu-cached
Dec 20 01:01:58 Lubuntu kernel: [142653.121880] [ 3042] 1000 3042 2204 579 0 0 0 gconfd-2
Dec 20 01:01:58 Lubuntu kernel: [142653.121882] [ 3046] 1000 3046 22131 893 3 0 0 pulseaudio
Dec 20 01:01:58 Lubuntu kernel: [142653.121886] [ 3048] 115 3048 5334 315 1 0 0 rtkit-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121888] [ 3069] 1000 3069 11507 1082 2 0 0 indicator-appli
Dec 20 01:01:58 Lubuntu kernel: [142653.121891] [ 3274] 1000 3274 8400 613 0 0 0 dconf-service
Dec 20 01:01:58 Lubuntu kernel: [142653.121894] [ 3305] 1000 3305 4970 1243 3 0 0 VBoxXPCOMIPCD
Dec 20 01:01:58 Lubuntu kernel: [142653.121897] [ 3310] 1000 3310 10332 2611 1 0 0 VBoxSVC
Dec 20 01:01:58 Lubuntu kernel: [142653.121900] [ 3356] 1000 3356 34122 4071 3 0 0 truecrypt
Dec 20 01:01:58 Lubuntu kernel: [142653.121903] [ 3357] 1000 3357 8258 520 1 0 0 truecrypt
Dec 20 01:01:58 Lubuntu kernel: [142653.121905] [ 3373] 0 3373 6216 715 3 0 0 truecrypt
Dec 20 01:01:58 Lubuntu kernel: [142653.121908] [ 3377] 0 3377 6216 332 3 0 0 truecrypt
Dec 20 01:01:58 Lubuntu kernel: [142653.121911] [ 3379] 0 3379 40907 465 3 0 0 truecrypt
Dec 20 01:01:58 Lubuntu kernel: [142653.121915] [ 3419] 0 3419 6216 334 3 0 0 truecrypt
Dec 20 01:01:58 Lubuntu kernel: [142653.121918] [ 3421] 0 3421 39029 496 2 0 0 truecrypt
Dec 20 01:01:58 Lubuntu kernel: [142653.121922] [ 3444] 1000 3444 331341 284523 3 0 0 VirtualBox
Dec 20 01:01:58 Lubuntu kernel: [142653.121924] [ 3991] 1000 3991 345903 282194 1 0 0 VirtualBox
Dec 20 01:01:58 Lubuntu kernel: [142653.121927] [ 4395] 0 4395 17967 1184 2 0 0 udisksd
Dec 20 01:01:58 Lubuntu kernel: [142653.121930] [ 4872] 33 4872 10296 1302 2 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121933] [ 5576] 0 5576 5964 1019 2 0 0 smbd
Dec 20 01:01:58 Lubuntu kernel: [142653.121936] [ 5646] 0 5646 4272 1113 0 0 0 sshd
Dec 20 01:01:58 Lubuntu kernel: [142653.121939] [ 5826] 113 5826 4309 491 2 0 0 sshd
Dec 20 01:01:58 Lubuntu kernel: [142653.121942] [ 5827] 113 5827 5169 4672 2 0 0 nxserver
Dec 20 01:01:58 Lubuntu kernel: [142653.121944] [ 6057] 113 6057 1675 567 0 0 0 nxssh
Dec 20 01:01:58 Lubuntu kernel: [142653.121947] [ 6139] 33 6139 10340 1299 0 0 0 apache2
Dec 20 01:01:58 Lubuntu kernel: [142653.121950] [ 6162] 1000 6162 1303 299 0 0 0 su-to-root
Dec 20 01:01:58 Lubuntu kernel: [142653.121953] [ 6168] 1000 6168 24381 2066 0 0 0 gksu
Dec 20 01:01:58 Lubuntu kernel: [142653.121956] [ 6175] 0 6175 961 85 1 0 0 dbus-launch
Dec 20 01:01:58 Lubuntu kernel: [142653.121958] [ 6176] 0 6176 842 169 2 0 0 dbus-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121961] [ 6185] 0 6185 14470 1015 0 0 0 kdeinit4
Dec 20 01:01:58 Lubuntu kernel: [142653.121964] [ 6186] 0 6186 16613 1439 0 0 0 klauncher
Dec 20 01:01:58 Lubuntu kernel: [142653.121967] [ 6189] 0 6189 18512 1834 0 0 0 kded4
Dec 20 01:01:58 Lubuntu kernel: [142653.121970] [ 6197] 0 6197 6351 837 3 0 0 udisks-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121973] [ 6198] 0 6198 1655 108 2 0 0 udisks-daemon
Dec 20 01:01:58 Lubuntu kernel: [142653.121976] [ 6213] 0 6213 22899 1784 2 0 0 kactivitymanage
Dec 20 01:01:58 Lubuntu kernel: [142653.121979] [ 6262] 1000 6262 26641 2961 0 0 0 lxterminal
Dec 20 01:01:58 Lubuntu kernel: [142653.121981] [ 6263] 1000 6263 601 182 1 0 0 gnome-pty-helpe
Dec 20 01:01:58 Lubuntu kernel: [142653.121984] [ 6264] 1000 6264 1558 664 2 0 0 bash
Dec 20 01:01:58 Lubuntu kernel: [142653.121987] [ 7259] 0 7259 5957 972 2 0 0 smbd
Dec 20 01:01:58 Lubuntu kernel: [142653.121990] [24575] 0 24575 5954 1194 3 0 0 smbd
Dec 20 01:01:58 Lubuntu kernel: [142653.121993] [24843] 0 24843 5991 1142 2 0 0 smbd
Dec 20 01:01:58 Lubuntu kernel: [142653.121996] [25240] 0 25240 18206 2749 0 0 0 kuiserver
Dec 20 01:01:58 Lubuntu kernel: [142653.122000] [27635] 0 27635 2684 597 3 0 0 cron
Dec 20 01:01:58 Lubuntu kernel: [142653.122003] [27636] 0 27636 558 137 3 0 0 sh
Dec 20 01:01:58 Lubuntu kernel: [142653.122006] [27637] 0 27637 558 136 0 0 0 backintime
Dec 20 01:01:58 Lubuntu kernel: [142653.122009] [27638] 0 27638 114984 113351 1 0 0 python
Dec 20 01:01:58 Lubuntu kernel: [142653.122014] [ 3194] 0 3194 558 137 0 0 0 sh
Dec 20 01:01:58 Lubuntu kernel: [142653.122017] [ 3195] 0 3195 1244 324 0 0 0 chmod
Dec 20 01:01:58 Lubuntu kernel: [142653.122019] Out of memory: Kill process 3444 (VirtualBox) score 139 or sacrifice child
Dec 20 01:01:58 Lubuntu kernel: [142653.122025] Killed process 3444 (VirtualBox) total-vm:1325364kB, anon-rss:19736kB, file-rss:1118356kB
Ele continua assim e o servidor fica totalmente congelado. Ele roda Lubuntu 12.10 32 bits
Responder1
O log do OOM mostra quais processos ele viu em execução quando encontrou a condição de pouca memória e quais deles ele tentou eliminar. Consulte a tabela que começa com o seguinte título:
[ pid ] uid tgid total_vm rss cpu oom_adj oom_score_adj name
total_vm é a coluna que mostra o total de memória mapeada (RAM + Swap) para o processo - observo que os grandes processos são VirtualBox (x2) e python (pid == 27638).
Presumo que você conheça o VirtualBox, mas valeria a pena descobrir o que era esse processo python. Poderia ser um script que deu errado? Algo que monitora arquivos adicionados? Algum tipo de scanner de mídia que procura novos arquivos (por exemplo, um servidor de mídia como plex, rygel ou similar?) Ou seu gerenciador de backup?
A maneira mais simples de rastrear o uso da memória (mas é estritamente online/interativo) seria usar tope classificar por memória (pressione M - é M maiúsculo - ou seja, shift-M). A primeira linha de memória também informará quanta RAM física o sistema operacional acha que você tem "Mem:", o que é útil se você acha que está faltando parte da sua RAM - devido a problemas de 32 bits.
Você poderia criar algum tipo de script de monitoramento, embora na minha cabeça eu não conheça uma maneira legal de fazer isso. Para começar, tenho:
top -n 1 -b | sed '1,/^$/d' | sort -r -n -k10
Isso despeja a saída superior, corta o cabeçalho até a linha em branco (de 1 a "^$") e classifica a saída pela 10ª coluna (para mim, sua porcentagem de memória), em ordem numérica inversa. Executar esse despejo regular em um arquivo pode ajudar.