任何人都可以告訴我內存消失的地方：

(不,這次既不緩沖也不緩存)

# free

total used free shared buffers cached

Mem: 3928200 3868560 59640 0 2888 92924

-/+ buffers/cache: 3772748 155452

Swap: 4192956 226352 3966604

頂部,按內存排序,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

事實上,前段時間,oom開始闖入并崩潰了系統(tǒng)(內核恐慌),我擔心我們離這一點不遠了……

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

...

總結

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