Não tenho partição de swap no meu disco porque prefiro que o ceifador do OOM mate rapidamente qualquer coisa que ele queira, em vez de esperar 10 minutos para que minha partição de swap seja preenchida + 5 outros minutos para iniciar o travamento do ceifador + do OOM. Basicamente, meu problema é:
- lançamento
eat_all_my_memory
; - aguarde 10 minutos com um sistema que não responde (LED do HDD sempre aceso);
- enquanto isso, tente mudar para um TTY;
- espere alguns minutos para realmente mudar;
- digite o nome de usuário e a senha;
- espere alguns minutos;
- Conecte-se;
- faça logoff por causa do Ceifador;
- repita de 5 até que funcione;
- use
top
e veja se akworker
está "funcionando"; - ser morto de novo;
- receba uma mensagem do ceifador dizendo que
eat_all_my_memory
foi morto; - A memória é liberada.
Levou 12 minutos da última vez. Minhas tentativas de efetuar login em um TTY parecem não ter efeito em todo o tempo do ciclo. Eu tenho algumas perguntas então:
- Por que meu sistema grava alguma coisa no disco? Não há troca !!!
- Para onde ele escreve?
- Ainda não há como dizer ao assassino do OOM para matar o maior processo do usuário ou o que está consumindo a maior parte da memória em um tempo mínimo. Até lá, existe alguma maneira de fazer com que o assassino do OOM faça seu trabalho sem tentar fazer nada com o disco?
Eu tive o problema com o Debian, Ubuntu e agora o Archlinux, então isso não parece ser específico da distribuição.
EDIT: trechos do arquivo de log
Lancei o comando ofensivo por volta das 15:28. Parece que o sistema realmente leva muito tempo antes de descobrir que não há mais nada.
déc. 11 15:28:56 hostname dbus[475]: [system] Failed to activate service 'org.freedesktop.ModemManager1': timed out
déc. 11 15:29:40 hostname dbus[475]: [system] Activation via systemd failed for unit 'dbus-org.freedesktop.ModemManager1.service': Unit dbus-org.freedesktop.ModemManager1.service failed to load: No such file or directory.
déc. 11 15:30:31 hostname dbus-daemon[475]: dbus[475]: [system] Failed to activate service 'org.freedesktop.ModemManager1': timed out
déc. 11 15:30:46 hostname systemd[1]: Starting Getty on tty2...
déc. 11 15:30:46 hostname systemd[1]: Started Getty on tty2.
déc. 11 15:31:56 hostname systemd[1]: Starting Session 2 of user username.
déc. 11 15:31:56 hostname systemd[1]: Started Session 2 of user username.
déc. 11 15:31:57 hostname systemd-logind[472]: New session 2 of user username.
déc. 11 15:31:58 hostname systemd[1]: getty@tty2.service holdoff time over, scheduling restart.
déc. 11 15:31:58 hostname systemd[1]: Starting Getty on tty2...
déc. 11 15:31:58 hostname systemd[1]: Started Getty on tty2.
déc. 11 15:32:10 hostname systemd[1]: Stopped Session 2 of user username.
déc. 11 15:32:18 hostname systemd-logind[472]: Removed session 2.
déc. 11 15:33:01 hostname systemd[1]: Starting Session 3 of user username.
déc. 11 15:33:02 hostname systemd[1]: Started Session 3 of user username.
déc. 11 15:33:15 hostname systemd-logind[472]: New session 3 of user username.
déc. 11 15:33:37 hostname systemd-logind[472]: Failed to save session data for 3: No space left on device
déc. 11 15:35:00 hostname dbus-daemon[475]: dbus[475]: [system] Activation via systemd failed for unit 'dbus-org.freedesktop.nm-dispatcher.service': Unit dbus-org.freedesktop.nm-dispatcher.service failed to load: No such file or directory.
déc. 11 15:35:00 hostname kernel: chromium invoked oom-killer: gfp_mask=0x201da, order=0, oom_score_adj=300
déc. 11 15:34:52 hostname systemd[1]: getty@tty2.service holdoff time over, scheduling restart.
déc. 11 15:34:52 hostname systemd[1]: Stopping Getty on tty2...
déc. 11 15:34:52 hostname systemd[1]: Starting Getty on tty2...
déc. 11 15:34:52 hostname systemd[1]: Started Getty on tty2.
déc. 11 15:34:52 hostname systemd-logind[472]: Removed session 3.
déc. 11 15:35:00 hostname kernel: chromium cpuset=/ mems_allowed=0
déc. 11 15:35:00 hostname kernel: CPU: 0 PID: 9811 Comm: chromium Not tainted 3.12.3-1-ARCH #1
déc. 11 15:35:00 hostname kernel: Hardware name: Dell Inc. Latitude E6400 /0X574R, BIOS A20 12/21/2009
déc. 11 15:35:00 hostname kernel: 0000000000000000 ffff8800502179a8 ffffffff814ee3db ffff8800ab6588b0
déc. 11 15:35:01 hostname kernel: ffff880050217a38 ffffffff814ec36e ffff8800502179c8 ffffffff81062d66
déc. 11 15:35:01 hostname kernel: ffff880050217a10 ffffffff810f3354 0000000000000000 ffff8800bf449b28
déc. 11 15:35:01 hostname kernel: Call Trace:
déc. 11 15:35:01 hostname kernel: [<ffffffff814ee3db>] dump_stack+0x54/0x8d
déc. 11 15:35:01 hostname kernel: [<ffffffff814ec36e>] dump_header+0x7f/0x200
déc. 11 15:35:01 hostname kernel: [<ffffffff81062d66>] ? put_online_cpus+0x56/0x80
déc. 11 15:35:01 hostname kernel: [<ffffffff810f3354>] ? rcu_oom_notify+0xe4/0x100
déc. 11 15:35:01 hostname kernel: [<ffffffff81138dd6>] oom_kill_process+0x206/0x390
déc. 11 15:35:01 hostname kernel: [<ffffffff81139557>] out_of_memory+0x437/0x480
déc. 11 15:35:01 hostname kernel: [<ffffffff8113f3e9>] __alloc_pages_nodemask+0xad9/0xaf0
déc. 11 15:35:01 hostname kernel: [<ffffffff8117eaa9>] alloc_pages_current+0xa9/0x160
déc. 11 15:35:01 hostname kernel: [<ffffffff81136297>] __page_cache_alloc+0x97/0xc0
déc. 11 15:35:01 hostname kernel: [<ffffffff81137c38>] filemap_fault+0x188/0x430
déc. 11 15:35:01 hostname kernel: [<ffffffff8115c2bf>] __do_fault+0x6f/0x590
déc. 11 15:35:01 hostname kernel: [<ffffffff811610e8>] handle_mm_fault+0x398/0x10f0
déc. 11 15:35:01 hostname kernel: [<ffffffff814f8c59>] __do_page_fault+0x1e9/0x5f0
déc. 11 15:35:01 hostname kernel: [<ffffffff81168177>] ? do_mmap_pgoff+0x357/0x3e0
déc. 11 15:35:01 hostname kernel: [<ffffffff814f906e>] do_page_fault+0xe/0x10
déc. 11 15:35:01 hostname kernel: [<ffffffff814f5c88>] page_fault+0x28/0x30
déc. 11 15:35:01 hostname kernel: Mem-Info:
déc. 11 15:35:01 hostname kernel: Node 0 DMA per-cpu:
déc. 11 15:35:01 hostname kernel: Node 0 DMA per-cpu:
déc. 11 15:35:01 hostname kernel: CPU 0: hi: 0, btch: 1 usd: 0
déc. 11 15:35:01 hostname kernel: CPU 1: hi: 0, btch: 1 usd: 0
déc. 11 15:35:01 hostname kernel: Node 0 DMA32 per-cpu:
déc. 11 15:35:01 hostname kernel: CPU 0: hi: 186, btch: 31 usd: 30
déc. 11 15:35:01 hostname kernel: CPU 1: hi: 186, btch: 31 usd: 64
déc. 11 15:35:01 hostname kernel: active_anon:690683 inactive_anon:9400 isolated_anon:0
active_file:92 inactive_file:104 isolated_file:0
unevictable:37 dirty:3 writeback:24 unstable:0
free:14229 slab_reclaimable:4844 slab_unreclaimable:6907
mapped:9344 shmem:12110 pagetables:9731 bounce:0
free_cma:0
déc. 11 15:35:01 hostname kernel: Node 0 DMA free:12148kB min:232kB low:288kB high:348kB active_anon:3024kB inactive_anon:44kB 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:40kB shmem:44kB slab_reclaimable:32kB slab_unreclaimable:160kB kernel_stack:40kB pagetables:200kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
déc. 11 15:35:01 hostname kernel: lowmem_reserve[]: 0 2984 2984 2984
déc. 11 15:35:01 hostname kernel: Node 0 DMA32 free:44768kB min:44820kB low:56024kB high:67228kB active_anon:2759708kB inactive_anon:37556kB active_file:368kB inactive_file:416kB unevictable:148kB isolated(anon):0kB isolated(file):0kB present:3117364kB managed:3058728kB mlocked:148kB dirty:12kB writeback:96kB mapped:37336kB shmem:48396kB slab_reclaimable:19344kB slab_unreclaimable:27468kB kernel_stack:3424kB pagetables:38724kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:1540 all_unreclaimable? yes
déc. 11 15:35:01 hostname kernel: lowmem_reserve[]: 0 0 0 0
déc. 11 15:35:01 hostname kernel: Node 0 DMA: 5*4kB (UEM) 4*8kB (UE) 6*16kB (UE) 1*32kB (E) 7*64kB (UEM) 0*128kB 3*256kB (UEM) 3*512kB (UEM) 1*1024kB (E) 2*2048kB (ER) 1*4096kB (M) = 12148kB
déc. 11 15:35:01 hostname kernel: Node 0 DMA32: 402*4kB (UER) 661*8kB (UEM) 437*16kB (UE) 141*32kB (UE) 96*64kB (UEM) 16*128kB (UE) 3*256kB (U) 0*512kB 15*1024kB (M) 1*2048kB (M) 0*4096kB = 44768kB
déc. 11 15:35:01 hostname kernel: Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB
déc. 11 15:35:01 hostname kernel: 12341 total pagecache pages
déc. 11 15:35:01 hostname kernel: 0 pages in swap cache
déc. 11 15:35:01 hostname kernel: Swap cache stats: add 0, delete 0, find 0/0
déc. 11 15:35:01 hostname kernel: Free swap = 0kB
déc. 11 15:35:01 hostname kernel: Total swap = 0kB
déc. 11 15:35:01 hostname kernel: 783436 pages RAM
déc. 11 15:35:01 hostname kernel: 14777 pages reserved
déc. 11 15:35:01 hostname kernel: 557929 pages shared
déc. 11 15:35:01 hostname kernel: 739735 pages non-shared
déc. 11 15:35:01 hostname kernel: [ pid ] uid tgid total_vm rss nr_ptes swapents oom_score_adj name
déc. 11 15:35:01 hostname kernel: [ 152] 0 152 157732 79 284 0 0 systemd-journal
déc. 11 15:35:01 hostname kernel: [ 184] 0 184 8115 317 19 0 -1000 systemd-udevd
déc. 11 15:35:01 hostname kernel: [ 471] 0 471 82124 530 56 0 0 NetworkManager
déc. 11 15:35:01 hostname kernel: [ 472] 0 472 6454 79 18 0 0 systemd-logind
déc. 11 15:35:01 hostname kernel: [ 474] 0 474 20099 626 41 0 0 cupsd
déc. 11 15:35:01 hostname kernel: [ 475] 81 475 4604 317 14 0 -900 dbus-daemon
déc. 11 15:35:01 hostname login[17681]: pam_unix(login:session): session opened for user username by LOGIN(uid=0)
déc. 11 15:35:01 hostname kernel: [ 478] 0 478 47623 185 28 0 0 gdm
déc. 11 15:35:01 hostname kernel: [ 491] 0 491 69089 264 38 0 0 gdm-simple-slav
déc. 11 15:35:01 hostname kernel: [ 495] 0 495 52967 17799 112 0 0 Xorg
déc. 11 15:35:01 hostname kernel: [ 496] 0 496 65758 934 32 0 0 accounts-daemon
déc. 11 15:35:01 hostname kernel: [ 502] 102 502 126663 1810 46 0 0 polkitd
déc. 11 15:35:01 hostname kernel: [ 504] 0 504 78582 1823 52 0 0 colord
déc. 11 15:35:01 hostname kernel: [ 515] 0 515 7563 150 19 0 0 wpa_supplicant
déc. 11 15:35:01 hostname kernel: [ 525] 120 525 7213 100 19 0 0 systemd
déc. 11 15:35:01 hostname kernel: [ 527] 120 527 12666 255 29 0 0 (sd-pam)
déc. 11 15:35:01 hostname kernel: [ 533] 0 533 2152 46 10 0 0 dhcpcd
déc. 11 15:35:01 hostname kernel: [ 557] 0 557 56854 316 40 0 0 upowerd
déc. 11 15:35:01 hostname kernel: [ 614] 0 614 2152 46 10 0 0 dhcpcd
déc. 11 15:35:01 hostname kernel: [ 745] 0 745 98980 2352 64 0 0 gdm-session-wor
déc. 11 15:35:01 hostname kernel: [ 748] 1000 748 7213 99 19 0 0 systemd
déc. 11 15:35:01 hostname kernel: [ 749] 1000 749 12666 263 29 0 0 (sd-pam)
déc. 11 15:35:01 hostname kernel: [ 752] 1000 752 91654 1159 41 0 0 gnome-keyring-d
déc. 11 15:35:01 hostname kernel: [ 754] 1000 754 138634 493 99 0 0 gnome-session
déc. 11 15:35:01 hostname kernel: [ 768] 1000 768 3976 38 13 0 0 dbus-launch
déc. 11 15:35:02 hostname kernel: [ 769] 1000 769 4912 513 14 0 0 dbus-daemon
déc. 11 15:35:02 hostname kernel: [ 772] 1000 772 3166 80 10 0 0 ssh-agent
déc. 11 15:35:02 hostname kernel: [ 775] 1000 775 84370 678 33 0 0 at-spi-bus-laun
déc. 11 15:35:02 hostname systemd[1]: Starting Session 4 of user username.
déc. 11 15:35:02 hostname systemd-logind[472]: New session 4 of user username.
déc. 11 15:35:02 hostname systemd[1]: Started Session 4 of user username.
déc. 11 15:35:02 hostname login[17681]: LOGIN ON tty2 BY username
déc. 11 15:35:02 hostname kernel: [ 779] 1000 779 4395 116 13 0 0 dbus-daemon
déc. 11 15:35:02 hostname kernel: [ 782] 1000 782 31222 198 32 0 0 at-spi2-registr
déc. 11 15:35:02 hostname kernel: [ 791] 1000 791 341490 2546 212 0 0 gnome-settings-
déc. 11 15:35:02 hostname kernel: [ 803] 1000 803 50098 217 32 0 0 gvfsd
déc. 11 15:35:02 hostname kernel: [ 809] 1000 809 93198 652 88 0 0 pulseaudio
déc. 11 15:35:02 hostname kernel: [ 810] 133 810 42165 55 19 0 0 rtkit-daemon
déc. 11 15:35:02 hostname kernel: [ 816] 1000 816 88701 219 39 0 0 gvfsd-fuse
déc. 11 15:35:02 hostname kernel: [ 827] 1000 827 44128 285 21 0 0 dconf-service
déc. 11 15:35:02 hostname kernel: [ 830] 0 830 88452 393 37 0 0 udisksd
déc. 11 15:35:02 hostname kernel: [ 837] 1000 837 103711 438 97 0 0 gsd-printer
déc. 11 15:35:02 hostname kernel: [ 846] 1000 846 17304 135 37 0 0 gconf-helper
déc. 11 15:35:02 hostname kernel: [ 848] 1000 848 11426 202 27 0 0 gconfd-2
déc. 11 15:35:02 hostname kernel: [ 850] 1000 850 89925 1001 40 0 0 ibus-daemon
déc. 11 15:35:02 hostname kernel: [ 854] 1000 854 71274 207 40 0 0 ibus-dconf
déc. 11 15:35:02 hostname kernel: [ 856] 1000 856 82143 550 89 0 0 ibus-x11
déc. 11 15:35:02 hostname kernel: [ 865] 1000 865 490808 84757 496 0 0 gnome-shell
déc. 11 15:35:02 hostname kernel: [ 873] 1000 873 52301 253 36 0 0 ibus-engine-sim
déc. 11 15:35:02 hostname kernel: [ 886] 1000 886 122524 1764 70 0 0 gnome-shell-cal
déc. 11 15:35:02 hostname kernel: [ 892] 1000 892 302273 2741 165 0 0 evolution-sourc
déc. 11 15:35:02 hostname kernel: [ 895] 1000 895 95391 499 54 0 0 mission-control
déc. 11 15:35:02 hostname kernel: [ 899] 1000 899 288823 8032 184 0 0 goa-daemon
déc. 11 15:35:03 hostname kernel: [ 908] 1000 908 74163 402 43 0 0 gvfs-udisks2-vo
déc. 11 15:35:03 hostname kernel: [ 913] 1000 913 52309 264 38 0 0 gvfs-goa-volume
déc. 11 15:35:03 hostname kernel: [ 917] 1000 917 68304 236 34 0 0 gvfs-afc-volume
déc. 11 15:35:03 hostname kernel: [ 922] 1000 922 49096 756 31 0 0 gvfs-gphoto2-vo
déc. 11 15:35:03 hostname kernel: [ 926] 1000 926 46023 192 26 0 0 gvfs-mtp-volume
déc. 11 15:35:03 hostname kernel: [ 928] 1000 928 27234 346 23 0 0 gvfsd-metadata
déc. 11 15:35:03 hostname kernel: [ 969] 1000 969 393544 16251 221 0 0 evolution-calen
déc. 11 15:35:03 hostname kernel: [ 970] 1000 970 121647 1552 99 0 0 zeitgeist-datah
déc. 11 15:35:03 hostname kernel: [ 983] 1000 983 108204 2348 64 0 0 tracker-store
déc. 11 15:35:03 hostname kernel: [ 989] 1000 989 134035 1425 84 0 0 tracker-miner-f
déc. 11 15:35:03 hostname kernel: [ 994] 1000 994 89533 839 43 0 0 zeitgeist-daemo
déc. 11 15:35:04 hostname kernel: [ 995] 1000 995 187376 2301 198 0 0 evolution-alarm
déc. 11 15:35:04 hostname kernel: [ 1093] 1000 1093 184129 1392 136 0 0 nm-applet
déc. 11 15:35:04 hostname kernel: [ 1100] 1000 1100 73740 286 45 0 0 telepathy-logge
déc. 11 15:35:04 hostname kernel: [ 1147] 1000 1147 68498 198 36 0 0 gvfsd-burn
déc. 11 15:35:04 hostname kernel: [ 1165] 1000 1165 12786 107 28 0 0 gnome-keyring-d
déc. 11 15:35:04 hostname kernel: [ 1389] 1000 1389 398982 8110 302 0 0 nautilus
déc. 11 15:35:04 hostname kernel: [ 1398] 1000 1398 88619 795 40 0 0 gvfsd-trash
déc. 11 15:35:04 hostname kernel: [ 1457] 1000 1457 203280 24474 225 0 0 lyx
déc. 11 15:35:04 hostname kernel: [ 1559] 1000 1559 183224 3012 149 0 0 gnome-terminal-
déc. 11 15:35:04 hostname kernel: [ 1562] 1000 1562 2092 30 10 0 0 gnome-pty-helpe
déc. 11 15:35:04 hostname kernel: [ 1563] 1000 1563 10912 634 25 0 0 zsh
déc. 11 15:35:04 hostname kernel: [ 1593] 1000 1593 57029 4140 110 0 0 gvim
déc. 11 15:35:04 hostname kernel: [ 2607] 1000 2607 102633 532 67 0 0 gvfsd-dav
déc. 11 15:35:04 hostname kernel: [ 3103] 1000 3103 10908 627 27 0 0 zsh
déc. 11 15:35:04 hostname kernel: [ 3148] 1000 3148 133807 31626 181 0 0 ipython2
déc. 11 15:35:04 hostname kernel: [ 3162] 1000 3162 98936 1056 60 0 0 gvfsd-http
déc. 11 15:35:04 hostname kernel: [ 3302] 1000 3302 107936 982 42 0 0 gvfsd-sftp
déc. 11 15:35:04 hostname kernel: [ 3308] 1000 3308 8996 212 21 0 0 ssh
déc. 11 15:35:04 hostname kernel: [ 5660] 2 5660 14912 126 31 0 0 dbus
déc. 11 15:35:04 hostname kernel: [ 8987] 0 8987 3653 42 11 0 0 rsync
déc. 11 15:35:04 hostname kernel: [ 9769] 1000 9769 511482 26442 351 0 0 chromium
déc. 11 15:35:05 hostname kernel: [ 9773] 1000 9773 93826 1522 144 0 0 chromium
déc. 11 15:35:05 hostname kernel: [ 9774] 1000 9774 1594 20 9 0 0 chrome-sandbox
déc. 11 15:35:05 hostname kernel: [ 9775] 1000 9775 104526 1647 158 0 0 chromium
déc. 11 15:35:05 hostname kernel: [ 9781] 1000 9781 42248 284 78 0 0 nacl_helper
déc. 11 15:35:05 hostname kernel: [ 9782] 1000 9782 159825 1664 139 0 0 chromium
déc. 11 15:35:05 hostname kernel: [ 9811] 1000 9811 329690 27929 379 0 300 chromium
déc. 11 15:35:05 hostname kernel: [ 9821] 1000 9821 321850 24448 515 0 300 chromium
déc. 11 15:35:05 hostname kernel: [ 9828] 1000 9828 305135 5463 199 0 300 chromium
déc. 11 15:35:05 hostname kernel: [ 9834] 1000 9834 305197 7785 219 0 300 chromium
déc. 11 15:35:05 hostname kernel: [13644] 1000 13644 11491 702 27 0 0 zsh
déc. 11 15:35:05 hostname kernel: [14978] 1000 14978 510597 4097 190 0 0 epiphany
déc. 11 15:35:05 hostname kernel: [15037] 1000 15037 490075 7884 183 0 0 WebKitWebProces
déc. 11 15:35:05 hostname kernel: [16463] 1000 16463 606648 342911 976 0 0 python2
déc. 11 15:35:05 hostname kernel: [17520] 1000 17520 307237 7027 213 0 300 chromium
déc. 11 15:35:05 hostname kernel: [17570] 1000 17570 308086 8086 216 0 300 chromium
déc. 11 15:35:05 hostname kernel: [17577] 1000 17577 308518 7981 210 0 300 chromium
déc. 11 15:35:05 hostname kernel: [17665] 0 17665 15239 114 36 0 0 login
déc. 11 15:35:05 hostname kernel: Out of memory: Kill process 16463 (python2) score 447 or sacrifice child
déc. 11 15:35:05 hostname kernel: Killed process 16463 (python2) total-vm:2426592kB, anon-rss:1366496kB, file-rss:5148kB
/var/log/syslog
(ou messages
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