任何人都可以告诉我内存消失的地方：
(不,这次既不缓冲也不缓存)
(不,这次既不缓冲也不缓存)
- # free
- total used free shared buffers cached
- Mem: 3928200 3868560 59640 0 2888 92924
- -/+ buffers/cache: 3772748 155452
- Swap: 4192956 226352 3966604
顶部,按内存排序,降序：
- top - 13:42:06 up 1 day,3:47,2 users,load average: 0.08,0.12,0.36
- Tasks: 228 total,1 running,227 sleeping,0 stopped,0 zombie
- cpu0 : 2.0%us,4.0%sy,0.0%ni,90.1%id,0.0%wa,0.0%hi,4.0%si,0.0%st
- cpu1 : 0.0%us,0.0%sy,0.0%id,100.0%wa,0.0%si,0.0%st
- Mem: 3928200k total,3868020k used,60180k free,2896k buffers
- Swap: 4192956k total,226048k used,3966908k free,82068k cached
- PID USER PR NI VIRT RES SHR S %cpu %MEM TIME+ COMMAND
- 3863 root 20 0 902m 199m 3296 S 7 5.2 99:08.77 ndsd
- 21906 root 20 0 138m 9076 2988 S 0 0.2 0:00.02 sfcbd
- 2332 root 20 0 126m 4660 1332 S 0 0.1 0:17.72 mono
- 4243 wwwrun 20 0 683m 4468 668 S 0 0.1 0:07.38 java
- 2994 root 20 0 202m 2288 1660 S 0 0.1 6:10.02 httpstkd
- 4338 root 20 0 184m 2240 1112 S 0 0.1 0:00.52 namcd
- 21898 root 20 0 32368 1832 1256 R 1 0.0 0:00.08 top
事实上,前段时间,oom开始闯入并崩溃了系统(内核恐慌),我担心我们离这一点不远了……
UPDATE
- # cat /proc/meminfo
- MemTotal: 3928200 kB
- MemFree: 51336 kB
- Buffers: 2964 kB
- Cached: 72876 kB
- SwapCached: 29128 kB
- Active: 233440 kB
- Inactive: 88040 kB
- Active(anon): 188920 kB
- Inactive(anon): 56752 kB
- Active(file): 44520 kB
- Inactive(file): 31288 kB
- Unevictable: 0 kB
- Mlocked: 0 kB
- SwapTotal: 4192956 kB
- SwapFree: 3966824 kB
- Dirty: 32 kB
- Writeback: 0 kB
- AnonPages: 225112 kB
- Mapped: 11356 kB
- Shmem: 32 kB
- Slab: 1624080 kB
- SReclaimable: 13740 kB
- SUnreclaim: 1610340 kB
- KernelStack: 4176 kB
- PageTables: 10500 kB
- NFS_Unstable: 0 kB
- Bounce: 0 kB
- WritebackTmp: 0 kB
- CommitLimit: 6157056 kB
- Committed_AS: 2397684 kB
- VmallocTotal: 34359738367 kB
- VmallocUsed: 441372 kB
- VmallocChunk: 34359246755 kB
- HardwareCorrupted: 0 kB
- HugePages_Total: 0
- HugePages_Free: 0
- HugePages_Rsvd: 0
- HugePages_Surp: 0
- Hugepagesize: 2048 kB
- DirectMap4k: 10240 kB
- DirectMap2M: 4184064 kB
slabtop
- Active / Total Objects (% used) : 9041019 / 9207548 (98.2%)
- Active / Total Slabs (% used) : 401132 / 401156 (100.0%)
- Active / Total Caches (% used) : 91 / 159 (57.2%)
- Active / Total Size (% used) : 1491537.88K / 1519791.56K (98.1%)
- Minimum / Average / Maximum Object : 0.02K / 0.17K / 4096.00K
- OBJS ACTIVE USE OBJ SIZE SLABS OBJ/SLAB CACHE SIZE NAME
- 4240470 4240319 99% 0.12K 141349 30 565396K pid
- 2245140 2219675 98% 0.25K 149676 15 598704K size-256
- 2238090 2210087 98% 0.12K 74603 30 298412K size-128
- ...
解决方法
如果你正在使用,你几乎肯定会有一个内存泄漏的应用程序.通常,罪犯是内核选择杀死的人(但有时不会).
你尝试过像memtop这样的东西吗？
