遗憾的是，我的服务器由于内存不足而永久挂起：
Nov 8 07:30:43 crawler kernel:
Nov 8 07:30:43 crawler kernel: Call Trace:
Nov 8 07:30:43 crawler kernel: [<ffffffff800cb625>] out_of_memory+0x8e/0x2f3
Nov 8 07:30:43 crawler kernel: [<ffffffff8000f691>] __alloc_pages+0x27f/0x308
Nov 8 07:30:43 crawler kernel: [<ffffffff80013074>] __do_page_cache_readahead+0x96/0x17b
Nov 8 07:30:43 crawler kernel: [<ffffffff800139b5>] filemap_nopage+0x14c/0x360
Nov 8 07:30:43 crawler kernel: [<ffffffff80008972>] __handle_mm_fault+0x1fd/0x103b
Nov 8 07:30:43 crawler kernel: [<ffffffff8003ddfb>] lock_timer_base+0x1b/0x3c
Nov 8 07:30:43 crawler kernel: [<ffffffff800671ae>] do_page_fault+0x499/0x842
Nov 8 07:30:43 crawler kernel: [<ffffffff800638a7>] schedule_timeout+0x92/0xad
Nov 8 07:30:43 crawler kernel: [<ffffffff8009aa88>] process_timeout+0x0/0x5
Nov 8 07:30:43 crawler kernel: [<ffffffff800ff108>] sys_epoll_wait+0x42f/0x475
Nov 8 07:30:46 crawler kernel: [<ffffffff8008f4a9>] default_wake_function+0x0/0xe
Nov 8 07:30:46 crawler kernel: [<ffffffff8005ddf9>] error_exit+0x0/0x84
Nov 8 07:30:46 crawler kernel:
Nov 8 07:30:46 crawler kernel: Mem-info:
Nov 8 07:30:47 crawler kernel: Node 0 DMA per-cpu:
Nov 8 07:30:47 crawler kernel: cpu 0 hot: high 0, batch 1 used:0
Nov 8 07:30:47 crawler kernel: cpu 0 cold: high 0, batch 1 used:0
Nov 8 07:30:47 crawler kernel: cpu 1 hot: high 0, batch 1 used:0
Nov 8 07:30:47 crawler kernel: cpu 1 cold: high 0, batch 1 used:0
Nov 8 07:30:47 crawler kernel: Node 0 DMA32 per-cpu:
Nov 8 07:30:47 crawler kernel: cpu 0 hot: high 186, batch 31 used:27
Nov 8 07:30:47 crawler kernel: cpu 0 cold: high 62, batch 15 used:58
Nov 8 07:30:47 crawler kernel: cpu 1 hot: high 186, batch 31 used:62
Nov 8 07:30:47 crawler kernel: cpu 1 cold: high 62, batch 15 used:40
Nov 8 07:30:47 crawler kernel: Node 0 Normal per-cpu:
Nov 8 07:30:47 crawler kernel: cpu 0 hot: high 186, batch 31 used:124
Nov 8 07:30:48 crawler kernel: cpu 0 cold: high 62, batch 15 used:47
Nov 8 07:30:48 crawler kernel: cpu 1 hot: high 186, batch 31 used:32
Nov 8 07:30:48 crawler kernel: cpu 1 cold: high 62, batch 15 used:59
Nov 8 07:30:48 crawler kernel: Node 0 HighMem per-cpu: empty
Nov 8 07:30:48 crawler kernel: Free pages: 19904kB (0kB HighMem)
Nov 8 07:30:48 crawler kernel: Active:539752 inactive:442402 dirty:0 writeback:0 unstable:0 free:4976 slab:4557 mapped-file:1157 mapped-anon:981453 pagetables:14118
Nov 8 07:30:48 crawler kernel: Node 0 DMA free:10072kB min:16kB low:20kB high:24kB active:0kB inactive:0kB present:9676kB pages_scanned:0 all_unreclaimable? yes
Nov 8 07:30:48 crawler kernel: lowmem_reserve[]: 0 3511 4016 4016
答案1
当您的系统内存完全耗尽时，就会发生这种情况。系统无法再为任何新变量分配空间，因为您的物理内存和交换空间已完全用完。造成这种情况的主要原因是应用程序中的内存管理不当。