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主机256G的内存，安装Redhat 7.2的操作系统，安装了oracle 11g。主机重启后，在未运行oracle时用free -m 发现内存使用了近90G。
是什么占用了这么多的内存？请各位大神们帮忙分析下。（应该可以排除被oracle占用吧，因为oracle未启动时内存就被占用了近90G）
以下是oracle 启动后的信息，和oracle启动之前相差不大。
===================================================================
[root@mesdb]# cat /proc/meminfo
MemTotal: 264354880 kB
MemFree: 167194968 kB
Buffers: 294508 kB
Cached: 1595964 kB
SwapCached: 0 kB
Active: 2757396 kB
Inactive: 1045368 kB
Active(anon): 2140140 kB
Inactive(anon): 418892 kB
Active(file): 617256 kB
Inactive(file): 626476 kB
Unevictable: 332588 kB
Mlocked: 332588 kB
SwapTotal: 33554424 kB
SwapFree: 33554424 kB
Dirty: 1120 kB
Writeback: 0 kB
AnonPages: 2374600 kB
Mapped: 294404 kB
Shmem: 444968 kB
Slab: 256252 kB
SReclaimable: 135920 kB
SUnreclaim: 120332 kB
KernelStack: 18456 kB
PageTables: 133108 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 120639000 kB
Committed_AS: 5016832 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 1067352 kB
VmallocChunk: 34154916556 kB
HardwareCorrupted: 0 kB
AnonHugePages: 0 kB
HugePages_Total: 44036
HugePages_Free: 11530
HugePages_Rsvd: 11527
HugePages_Surp: 0
Hugepagesize: 2048 kB
DirectMap4k: 4096 kB
DirectMap2M: 2027520 kB
DirectMap1G: 266338304 kB
============================================================
[root@mesdb]# free -m
total used free shared buffers cached
Mem: 258159 94580 163578 0 298 1579
-/+ buffers/cache: 92702 165456
Swap: 32767 0 32767
============================================================
[root@mesdb]# top
top - 14:34:07 up 16:43, 2 users, load average: 1.54, 1.61, 1.55
Tasks: 1717 total, 2 running, 1715 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.0%us, 0.4%sy, 0.0%ni, 98.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 264354880k total, 96944660k used, 167410220k free, 305448k buffers
Swap: 33554424k total, 0k used, 33554424k free, 1617836k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
5723 root 20 0 5502m 238m 8368 S 2.6 0.1 18:09.12 java
7548 root RT -5 757m 154m 63m S 1.3 0.1 13:28.10 ologgerd
7507 grid RT 0 1344m 112m 54m S 0.3 0.0 5:24.40 ocssd.bin
7467 root RT 0 823m 92m 57m S 5.9 0.0 87:44.27 osysmond.bin
7496 root RT 0 951m 92m 57m S 0.0 0.0 1:01.53 cssdagent
7480 root RT 0 951m 91m 57m S 0.3 0.0 1:08.59 cssdmonitor
8220 grid 20 0 1332m 84m 59m S 0.7 0.0 9:08.09 oracle
13379 oracle -2 0 86.3g 64m 16m S 0.3 0.0 3:41.64 oracle
13383 oracle -2 0 86.3g 64m 16m S 0.3 0.0 3:37.52 oracle
13387 oracle -2 0 86.3g 64m 16m S 0.3 0.0 3:33.65 oracle
13391 oracle -2 0 86.3g 64m 16m S 0.3 0.0 3:37.30 oracle
13373 oracle 20 0 86.3g 58m 16m S 3.6 0.0 19:17.48 oracle
6927 root 20 0 1914m 52m 22m S 0.7 0.0 5:17.74 ohasd.bin
8584 root 20 0 2648m 50m 23m S 0.3 0.0 7:51.51 crsd.bin
8248 grid 20 0 1306m 47m 45m S 0.0 0.0 2:23.48 oracle
8200 grid 20 0 1309m 43m 41m S 0.0 0.0 0:15.94 oracle
8704 grid 20 0 1760m 43m 17m S 0.0 0.0 2:08.40 oraagent.bin
13429 oracle 20 0 86.2g 41m 33m S 0.3 0.0 0:19.62 oracle
7420 grid 20 0 1965m 37m 16m S 0.7 0.0 3:50.99 oraagent.bin
13555 oracle 20 0 86.2g 36m 29m S 0.0 0.0 0:36.16 oracle
2216 oracle 20 0 86.2g 36m 28m S 0.0 0.0 0:00.68 oracle
7454 root 20 0 1563m 35m 15m S 0.7 0.0 3:45.26 orarootagent.bi
7452 grid 20 0 623m 34m 12m S 0.3 0.0 4:22.84 gipcd.bin
8238 grid 20 0 1306m 32m 30m S 0.0 0.0 0:10.44 oracle
8224 grid 20 0 1322m 32m 18m S 0.3 0.0 1:20.37 oracle
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发表于 2016-09-27 14:40
