물리적 메모리는 적지 만 스왑 공간이 충분할 때 Linux OOM 킬러가 프로세스를 종료하지 않도록하려면 어떻게해야합니까?
OOM killing을 비활성화하고 sysctl vm.overcommit_memory = 2로 오버 커밋했습니다.
VM에는 3GB의 완전 무료 조각화되지 않은 스왑이 있으며 OOM 강제 종료중인 프로세스의 최대 메모리 사용량은 200MB 미만입니다.
장기 스와핑이 성능면에서 끔찍하다는 것을 알고 있지만 메모리 요구 사항이 훨씬 큰 valgrind에서 기능 테스트를 수행하려면 지금 스왑을 사용해야합니다.
Mar 7 02:43:11 myhost kernel: memcheck-amd64- invoked oom-killer: gfp_mask=0x24002c2, order=0, oom_score_adj=0
Mar 7 02:43:11 myhost kernel: memcheck-amd64- cpuset=/ mems_allowed=0
Mar 7 02:43:11 myhost kernel: CPU: 0 PID: 3841 Comm: memcheck-amd64- Not tainted 4.4.0-x86_64-linode63 #2
Mar 7 02:43:11 myhost kernel: Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.8.2-0-g33fbe13 by qemu-project.org 04/01/2014
Mar 7 02:43:11 myhost kernel: 0000000000000000 0000000000000000 ffffffff8158cbcc ffff880032d7bc18
Mar 7 02:43:11 myhost kernel: ffffffff811c6a55 00000015118e701d ffffffff81044a8d 00000000000003e2
Mar 7 02:43:11 myhost kernel: ffffffff8110f5a1 0000000000000000 00000000000003e2 ffffffff81cf15cc
Mar 7 02:43:11 myhost kernel: Call Trace:
Mar 7 02:43:11 myhost kernel: [<ffffffff8158cbcc>] ? dump_stack+0x40/0x50
Mar 7 02:43:11 myhost kernel: [<ffffffff811c6a55>] ? dump_header+0x59/0x1dd
Mar 7 02:43:11 myhost kernel: [<ffffffff81044a8d>] ? kvm_clock_read+0x1b/0x1d
Mar 7 02:43:11 myhost kernel: [<ffffffff8110f5a1>] ? __raw_callee_save___pv_queued_spin_unlock+0x11/0x1e
Mar 7 02:43:11 myhost kernel: [<ffffffff81183316>] ? oom_kill_process+0xc0/0x34f
Mar 7 02:43:11 myhost kernel: [<ffffffff811839b2>] ? out_of_memory+0x3bf/0x406
Mar 7 02:43:11 myhost kernel: [<ffffffff81187bbd>] ? __alloc_pages_nodemask+0x8ba/0x9d8
Mar 7 02:43:11 myhost kernel: [<ffffffff811b82e8>] ? alloc_pages_current+0xbc/0xe0
Mar 7 02:43:11 myhost kernel: [<ffffffff811b096c>] ? __vmalloc_node_range+0x12d/0x20a
Mar 7 02:43:11 myhost kernel: [<ffffffff811e0e62>] ? alloc_fdtable+0x6a/0xd8
Mar 7 02:43:11 myhost kernel: [<ffffffff811b0a83>] ? __vmalloc_node+0x3a/0x3f
Mar 7 02:43:11 myhost kernel: [<ffffffff811e0e62>] ? alloc_fdtable+0x6a/0xd8
Mar 7 02:43:11 myhost kernel: [<ffffffff811b0ab0>] ? vmalloc+0x28/0x2a
Mar 7 02:43:11 myhost kernel: [<ffffffff811e0e62>] ? alloc_fdtable+0x6a/0xd8
Mar 7 02:43:11 myhost kernel: [<ffffffff811e1338>] ? dup_fd+0x103/0x1f0
Mar 7 02:43:11 myhost kernel: [<ffffffff810dd143>] ? copy_process+0x5aa/0x160d
Mar 7 02:43:11 myhost kernel: [<ffffffff8110f5a1>] ? __raw_callee_save___pv_queued_spin_unlock+0x11/0x1e
Mar 7 02:43:11 myhost kernel: [<ffffffff810de2fc>] ? _do_fork+0x7d/0x291
Mar 7 02:43:11 myhost kernel: [<ffffffff810ea186>] ? __set_current_blocked+0x47/0x52
Mar 7 02:43:11 myhost kernel: [<ffffffff810ea1f2>] ? sigprocmask+0x61/0x6a
Mar 7 02:43:11 myhost kernel: [<ffffffff81998eae>] ? entry_SYSCALL_64_fastpath+0x12/0x71
Mar 7 02:43:11 myhost kernel: Mem-Info:
Mar 7 02:43:11 myhost kernel: active_anon:15 inactive_anon:18 isolated_anon:0
Mar 7 02:43:11 myhost kernel: active_file:7 inactive_file:8 isolated_file:0
Mar 7 02:43:11 myhost kernel: unevictable:0 dirty:3 writeback:26 unstable:0
Mar 7 02:43:11 myhost kernel: slab_reclaimable:1798 slab_unreclaimable:3674
Mar 7 02:43:11 myhost kernel: mapped:8 shmem:1 pagetables:752 bounce:0
Mar 7 02:43:11 myhost kernel: free:1973 free_pcp:0 free_cma:0
Mar 7 02:43:11 myhost kernel: Node 0 DMA free:3944kB min:60kB low:72kB high:88kB active_anon:0kB inactive_anon:0kB active_file:28kB inactive_file:32kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15992kB managed:15908kB
mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:72kB slab_unreclaimable:236kB kernel_stack:48kB pagetables:60kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:36
0 all_unreclaimable? yes
Mar 7 02:43:11 myhost kernel: lowmem_reserve[]: 0 972 972 972
Mar 7 02:43:11 myhost kernel: Node 0 DMA32 free:3948kB min:3956kB low:4944kB high:5932kB active_anon:60kB inactive_anon:72kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:1032064kB manag
ed:999552kB mlocked:0kB dirty:12kB writeback:104kB mapped:32kB shmem:4kB slab_reclaimable:7120kB slab_unreclaimable:14460kB kernel_stack:2112kB pagetables:2948kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_t
mp:0kB pages_scanned:792 all_unreclaimable? yes
Mar 7 02:43:11 myhost kernel: lowmem_reserve[]: 0 0 0 0
Mar 7 02:43:11 myhost kernel: Node 0 DMA: 20*4kB (UM) 17*8kB (UM) 13*16kB (M) 14*32kB (UM) 8*64kB (UM) 4*128kB (M) 4*256kB (M) 0*512kB 1*1024kB (M) 0*2048kB 0*4096kB = 3944kB
Mar 7 02:43:11 myhost kernel: Node 0 DMA32: 934*4kB (UM) 28*8kB (UM) 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 3960kB
Mar 7 02:43:11 myhost kernel: 71 total pagecache pages
Mar 7 02:43:11 myhost kernel: 42 pages in swap cache
Mar 7 02:43:11 myhost kernel: Swap cache stats: add 245190, delete 245148, find 77026/136093
Mar 7 02:43:11 myhost kernel: Free swap = 3118172kB
Mar 7 02:43:11 myhost kernel: Total swap = 3334140kB
Mar 7 02:43:11 myhost kernel: 262014 pages RAM
Mar 7 02:43:11 myhost kernel: 0 pages HighMem/MovableOnly
Mar 7 02:43:11 myhost kernel: 8149 pages reserved
Mar 7 02:43:11 myhost kernel: [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name
Mar 7 02:43:11 myhost kernel: [ 2054] 0 2054 5101 1 15 4 283 0 upstart-udev-br
Mar 7 02:43:11 myhost kernel: [ 2063] 0 2063 12362 1 28 4 184 -1000 systemd-udevd
Mar 7 02:43:11 myhost kernel: [ 3342] 102 3342 9780 1 23 3 89 0 dbus-daemon
Mar 7 02:43:11 myhost kernel: [ 3423] 0 3423 10864 1 26 3 85 0 systemd-logind
Mar 7 02:43:11 myhost kernel: [ 3441] 0 3441 15344 0 34 3 184 -1000 sshd
Mar 7 02:43:11 myhost kernel: [ 3450] 0 3450 4786 0 14 3 43 0 atd
Mar 7 02:43:11 myhost kernel: [ 3451] 0 3451 5915 0 17 4 65 0 cron
Mar 7 02:43:11 myhost kernel: [ 3457] 101 3457 63962 0 28 3 202 0 rsyslogd
Mar 7 02:43:11 myhost kernel: [ 3516] 0 3516 3919 1 13 3 156 0 upstart-file-br
Mar 7 02:43:11 myhost kernel: [ 3518] 0 3518 4014 0 13 3 265 0 upstart-socket-
Mar 7 02:43:11 myhost kernel: [ 3557] 0 3557 66396 0 32 3 1802 0 fail2ban-server
Mar 7 02:43:11 myhost kernel: [ 3600] 0 3600 3956 1 13 3 39 0 getty
Mar 7 02:43:11 myhost kernel: [ 3601] 0 3601 3198 1 12 3 37 0 getty
Mar 7 02:43:11 myhost kernel: [ 3673] 0 3673 26411 1 55 3 252 0 sshd
Mar 7 02:43:11 myhost kernel: [ 3740] 1000 3740 26411 1 52 3 253 0 sshd
Mar 7 02:43:11 myhost kernel: [ 3741] 1000 3741 5561 0 16 3 431 0 bash
Mar 7 02:43:11 myhost kernel: [ 3820] 103 3820 7863 1 21 3 152 0 ntpd
Mar 7 02:43:11 myhost kernel: [ 3837] 1000 3837 31990 0 58 4 12664 0 memcheck-amd64-
Mar 7 02:43:11 myhost kernel: [ 3841] 1000 3841 32006 0 59 4 12812 0 memcheck-amd64-
Mar 7 02:43:11 myhost kernel: [ 3844] 1000 3844 31950 0 57 4 12035 0 memcheck-amd64-
Mar 7 02:43:11 myhost kernel: [ 3849] 1000 3849 31902 0 56 4 11482 0 memcheck-amd64-
Mar 7 02:43:11 myhost kernel: [ 3853] 1000 3853 1087 0 7 3 27 0 lsof
Mar 7 02:43:11 myhost kernel: [ 3854] 0 3854 26140 5 55 3 230 0 sshd
Mar 7 02:43:11 myhost kernel: [ 3855] 104 3855 15699 0 33 3 202 0 sshd
Mar 7 02:43:11 myhost kernel: Out of memory: Kill process 3841 (memcheck-amd64-) score 11 or sacrifice child
Mar 7 02:43:11 myhost kernel: Killed process 3841 (memcheck-amd64-) total-vm:128024kB, anon-rss:0kB, file-rss:0kB
이것은 / proc / meminfo입니다
MemTotal: 1015460 kB
MemFree: 277508 kB
MemAvailable: 322032 kB
Buffers: 8336 kB
Cached: 42208 kB
SwapCached: 46088 kB
Active: 58844 kB
Inactive: 116100 kB
Active(anon): 34784 kB
Inactive(anon): 89620 kB
Active(file): 24060 kB
Inactive(file): 26480 kB
Unevictable: 0 kB
Mlocked: 0 kB
SwapTotal: 3334140 kB
SwapFree: 3215756 kB
Dirty: 16 kB
Writeback: 0 kB
AnonPages: 121128 kB
Mapped: 15072 kB
Shmem: 4 kB
Slab: 22668 kB
SReclaimable: 8028 kB
SUnreclaim: 14640 kB
KernelStack: 2016 kB
PageTables: 2532 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 3841868 kB
Committed_AS: 380460 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 0 kB
VmallocChunk: 0 kB
DirectMap4k: 14208 kB
DirectMap2M: 1034240 kB
DirectMap1G: 0 kB
all_unreclaimable
그렇습니다). 이 페이지는 일반적으로 커널에 고정되어 있거나 사용 중이므로 RAM에 페이지가 고정되어 있습니다. 당신이 RAM에 남긴 것은 그 당시에 교환 할 수 없었습니다. 교환 될 수 있었던 모든 것은 이미 있었다. 다시 말하지만 솔루션은 더 많은 RAM입니다.