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這裏是從頂部的輸出(由%紀念品排序):哪裏的內存缺少頂部?
Mem: 5796624k total, 4679932k used, 1116692k free, 317652k buffers
Swap: 0k total, 0k used, 0k free, 1734160k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
13169 storm 20 0 3279m 344m 16m S 0.7 6.1 201:38.40 java
5463 storm 20 0 2694m 172m 14m S 0.0 3.0 72:38.49 java
5353 storm 20 0 2561m 155m 14m S 0.0 2.7 30:20.43 java
13102 app 20 0 3813m 80m 17m S 0.3 1.4 132:37.16 java
13147 storm 20 0 3876m 65m 16m S 0.0 1.2 23:21.73 java
3081 named 20 0 230m 16m 2652 S 0.0 0.3 1:22.81 named
29773 root 20 0 318m 10m 3576 S 0.0 0.2 5:59.41 logstash-forwar
5345 root 20 0 193m 10m 1552 S 0.0 0.2 12:24.21 supervisord
1048 root 20 0 249m 5200 1068 S 0.0 0.1 0:22.55 rsyslogd
21774 root 20 0 99968 3980 3032 S 0.0 0.1 0:00.00 sshd
3456 postfix 20 0 81108 3432 2556 S 0.0 0.1 0:02.83 qmgr
3453 root 20 0 80860 3416 2520 S 0.0 0.1 0:19.40 master
在綠帶:
Mem: 5.8g total, 4.7g used, 1.1g free, 0.3g buffers
所以自由MEM爲1.1/5.8〜19%
凡爲如果我們添加最高的%Mem,我們看到使用的是大約:6.1 + 3.0 + 2.7 + 1.4 + 1.2 + 0.3 + ...〜16%,這意味着免費應該是大約84%
爲什麼數字不匹配(19%vs 84%)?
您還需要添加緩存+緩存使用的內存。見例如http://www.linuxatemyram.com/ – nos