内存不足：终止进程
Out of memory: kill process
有没有人知道为什么这些日志会出现这些错误 - 内存不足：终止进程 ... nginx 调用了 oom-killer？
最近，我们的 cms 出现故障，我们不得不手动重启 AWS 中的服务器，我们不确定是什么原因导致了这种行为。 log errors
以下是服务器停机时重复 33 次的确切代码行：
Out of memory: kill process 15654 (ruby) score 338490 or a child
Killed process 15654 (ruby) vsz:1353960kB, anon-rss:210704kB, file-rss:0kB
nginx invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0
nginx cpuset=/ mems_allowed=0
Pid: 8729, comm: nginx Tainted: G W 2.6.35.14-97.44.amzn1.x86_64 #1
Call Trace:
[<ffffffff8108e638>] ? cpuset_print_task_mems_allowed+0x98/0xa0
[<ffffffff810bb157>] dump_header.clone.1+0x77/0x1a0
[<ffffffff81318d49>] ? _raw_spin_unlock_irqrestore+0x19/0x20
[<ffffffff811ab3af>] ? ___ratelimit+0x9f/0x120
[<ffffffff810bb2f6>] oom_kill_process.clone.0+0x76/0x140
[<ffffffff810bb4d8>] __out_of_memory+0x118/0x190
[<ffffffff810bb5d2>] out_of_memory+0x82/0x1c0
[<ffffffff810beb89>] __alloc_pages_nodemask+0x689/0x6a0
[<ffffffff810e7864>] alloc_pages_current+0x94/0xf0
[<ffffffff810b87ef>] __page_cache_alloc+0x7f/0x90
[<ffffffff810c15e0>] __do_page_cache_readahead+0xc0/0x200
[<ffffffff810c173c>] ra_submit+0x1c/0x20
[<ffffffff810b9f63>] filemap_fault+0x3e3/0x430
[<ffffffff810d023f>] __do_fault+0x4f/0x4b0
[<ffffffff810d2774>] handle_mm_fault+0x1b4/0xb40
[<ffffffff81007682>] ? check_events+0x12/0x20
[<ffffffff81006f1d>] ? xen_force_evtchn_callback+0xd/0x10
[<ffffffff81007682>] ? check_events+0x12/0x20
[<ffffffff8131c752>] do_page_fault+0x112/0x310
[<ffffffff813194b5>] page_fault+0x25/0x30
Mem-Info:
Node 0 DMA per-cpu:
CPU 0: hi: 0, btch: 1 usd: 0
CPU 1: hi: 0, btch: 1 usd: 0
CPU 2: hi: 0, btch: 1 usd: 0
CPU 3: hi: 0, btch: 1 usd: 0
Node 0 DMA32 per-cpu:
CPU 0: hi: 186, btch: 31 usd: 35
CPU 1: hi: 186, btch: 31 usd: 0
CPU 2: hi: 186, btch: 31 usd: 30
CPU 3: hi: 186, btch: 31 usd: 0
Node 0 Normal per-cpu:
CPU 0: hi: 186, btch: 31 usd: 202
CPU 1: hi: 186, btch: 31 usd: 30
CPU 2: hi: 186, btch: 31 usd: 59
CPU 3: hi: 186, btch: 31 usd: 140
active_anon:3438873 inactive_anon:284496 isolated_anon:0
active_file:0 inactive_file:62 isolated_file:64
unevictable:0 dirty:0 writeback:0 unstable:0
free:16763 slab_reclaimable:1340 slab_unreclaimable:2956
mapped:29 shmem:12 pagetables:11130 bounce:0
Node 0 DMA free:7892kB min:16kB low:20kB high:24kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15772kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
lowmem_reserve[]: 0 4024 14836 14836
Node 0 DMA32 free:47464kB min:4224kB low:5280kB high:6336kB active_anon:3848564kB inactive_anon:147080kB active_file:0kB inactive_file:8kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4120800kB mlocked:0kB dirty:0kB writeback:0kB mapped:60kB shmem:0kB slab_reclaimable:28kB slab_unreclaimable:268kB kernel_stack:48kB pagetables:8604kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:82 all_unreclaimable? yes
lowmem_reserve[]: 0 0 10811 10811
Node 0 Normal free:11184kB min:11352kB low:14188kB high:17028kB active_anon:9906928kB inactive_anon:990904kB active_file:0kB inactive_file:1116kB unevictable:0kB isolated(anon):0kB isolated(file):256kB present:11071436kB mlocked:0kB dirty:0kB writeback:0kB mapped:56kB shmem:48kB slab_reclaimable:5332kB slab_unreclaimable:11556kB kernel_stack:2400kB pagetables:35916kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:32 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 3*4kB 1*8kB 2*16kB 1*32kB 0*64kB 3*128kB 1*256kB 0*512kB 1*1024kB 1*2048kB 1*4096kB = 7892kB
Node 0 DMA32: 62*4kB 104*8kB 53*16kB 29*32kB 27*64kB 7*128kB 2*256kB 3*512kB 1*1024kB 3*2048kB 8*4096kB = 47464kB
Node 0 Normal: 963*4kB 0*8kB 5*16kB 4*32kB 7*64kB 5*128kB 6*256kB 1*512kB 2*1024kB 1*2048kB 0*4096kB = 11292kB
318 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
3854801 pages RAM
86406 pages reserved
14574 pages shared
3738264 pages non-shared
发生这种情况是因为您的服务器 运行 内存不足。要解决这个问题，您有 2 个选择。
更新您的服务器内存或使用 SWAP（但建议升级物理内存而不是使用 SWAP）
限制 Nginx 内存的使用。
要限制nginx ram的使用，打开/etc/nginx/nginx.conf文件，在http配置块下添加client_max_body_size <your_value_here>。例如：
worker_processes 1;
http {
client_max_body_size 10M;
...
}
注意：MB 使用 M，GB 使用 G，TB 使用 T
有没有人知道为什么这些日志会出现这些错误 - 内存不足：终止进程 ... nginx 调用了 oom-killer？
最近，我们的 cms 出现故障，我们不得不手动重启 AWS 中的服务器，我们不确定是什么原因导致了这种行为。 log errors
以下是服务器停机时重复 33 次的确切代码行：
Out of memory: kill process 15654 (ruby) score 338490 or a child
Killed process 15654 (ruby) vsz:1353960kB, anon-rss:210704kB, file-rss:0kB
nginx invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0
nginx cpuset=/ mems_allowed=0
Pid: 8729, comm: nginx Tainted: G W 2.6.35.14-97.44.amzn1.x86_64 #1
Call Trace:
[<ffffffff8108e638>] ? cpuset_print_task_mems_allowed+0x98/0xa0
[<ffffffff810bb157>] dump_header.clone.1+0x77/0x1a0
[<ffffffff81318d49>] ? _raw_spin_unlock_irqrestore+0x19/0x20
[<ffffffff811ab3af>] ? ___ratelimit+0x9f/0x120
[<ffffffff810bb2f6>] oom_kill_process.clone.0+0x76/0x140
[<ffffffff810bb4d8>] __out_of_memory+0x118/0x190
[<ffffffff810bb5d2>] out_of_memory+0x82/0x1c0
[<ffffffff810beb89>] __alloc_pages_nodemask+0x689/0x6a0
[<ffffffff810e7864>] alloc_pages_current+0x94/0xf0
[<ffffffff810b87ef>] __page_cache_alloc+0x7f/0x90
[<ffffffff810c15e0>] __do_page_cache_readahead+0xc0/0x200
[<ffffffff810c173c>] ra_submit+0x1c/0x20
[<ffffffff810b9f63>] filemap_fault+0x3e3/0x430
[<ffffffff810d023f>] __do_fault+0x4f/0x4b0
[<ffffffff810d2774>] handle_mm_fault+0x1b4/0xb40
[<ffffffff81007682>] ? check_events+0x12/0x20
[<ffffffff81006f1d>] ? xen_force_evtchn_callback+0xd/0x10
[<ffffffff81007682>] ? check_events+0x12/0x20
[<ffffffff8131c752>] do_page_fault+0x112/0x310
[<ffffffff813194b5>] page_fault+0x25/0x30
Mem-Info:
Node 0 DMA per-cpu:
CPU 0: hi: 0, btch: 1 usd: 0
CPU 1: hi: 0, btch: 1 usd: 0
CPU 2: hi: 0, btch: 1 usd: 0
CPU 3: hi: 0, btch: 1 usd: 0
Node 0 DMA32 per-cpu:
CPU 0: hi: 186, btch: 31 usd: 35
CPU 1: hi: 186, btch: 31 usd: 0
CPU 2: hi: 186, btch: 31 usd: 30
CPU 3: hi: 186, btch: 31 usd: 0
Node 0 Normal per-cpu:
CPU 0: hi: 186, btch: 31 usd: 202
CPU 1: hi: 186, btch: 31 usd: 30
CPU 2: hi: 186, btch: 31 usd: 59
CPU 3: hi: 186, btch: 31 usd: 140
active_anon:3438873 inactive_anon:284496 isolated_anon:0
active_file:0 inactive_file:62 isolated_file:64
unevictable:0 dirty:0 writeback:0 unstable:0
free:16763 slab_reclaimable:1340 slab_unreclaimable:2956
mapped:29 shmem:12 pagetables:11130 bounce:0
Node 0 DMA free:7892kB min:16kB low:20kB high:24kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15772kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes
lowmem_reserve[]: 0 4024 14836 14836
Node 0 DMA32 free:47464kB min:4224kB low:5280kB high:6336kB active_anon:3848564kB inactive_anon:147080kB active_file:0kB inactive_file:8kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:4120800kB mlocked:0kB dirty:0kB writeback:0kB mapped:60kB shmem:0kB slab_reclaimable:28kB slab_unreclaimable:268kB kernel_stack:48kB pagetables:8604kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:82 all_unreclaimable? yes
lowmem_reserve[]: 0 0 10811 10811
Node 0 Normal free:11184kB min:11352kB low:14188kB high:17028kB active_anon:9906928kB inactive_anon:990904kB active_file:0kB inactive_file:1116kB unevictable:0kB isolated(anon):0kB isolated(file):256kB present:11071436kB mlocked:0kB dirty:0kB writeback:0kB mapped:56kB shmem:48kB slab_reclaimable:5332kB slab_unreclaimable:11556kB kernel_stack:2400kB pagetables:35916kB unstable:0kB bounce:0kB writeback_tmp:0kB pages_scanned:32 all_unreclaimable? no
lowmem_reserve[]: 0 0 0 0
Node 0 DMA: 3*4kB 1*8kB 2*16kB 1*32kB 0*64kB 3*128kB 1*256kB 0*512kB 1*1024kB 1*2048kB 1*4096kB = 7892kB
Node 0 DMA32: 62*4kB 104*8kB 53*16kB 29*32kB 27*64kB 7*128kB 2*256kB 3*512kB 1*1024kB 3*2048kB 8*4096kB = 47464kB
Node 0 Normal: 963*4kB 0*8kB 5*16kB 4*32kB 7*64kB 5*128kB 6*256kB 1*512kB 2*1024kB 1*2048kB 0*4096kB = 11292kB
318 total pagecache pages
0 pages in swap cache
Swap cache stats: add 0, delete 0, find 0/0
Free swap = 0kB
Total swap = 0kB
3854801 pages RAM
86406 pages reserved
14574 pages shared
3738264 pages non-shared
发生这种情况是因为您的服务器 运行 内存不足。要解决这个问题，您有 2 个选择。
更新您的服务器内存或使用 SWAP（但建议升级物理内存而不是使用 SWAP）
限制 Nginx 内存的使用。
要限制nginx ram的使用，打开/etc/nginx/nginx.conf文件，在http配置块下添加client_max_body_size <your_value_here>。例如：
worker_processes 1;
http {
client_max_body_size 10M;
...
}
注意：MB 使用 M，GB 使用 G，TB 使用 T