如何在Linux中找出内存消耗大的进程

你应该正确地 了解 top 命令输出 以解决系统中的性能问题。

# top -c -b -o +%MEM | head -n 20 | tail -15
 
  PID USER      PR  NI    VIRT    RES    SHR S  %CPU %MEM     TIME+ COMMAND
 1064 mysql     20   0  886076 209740   8388 S   0.0  5.4  62:41.20 /usr/sbin/mysqld
23396 varnish   20   0  286492 115616  83572 S   0.0  3.0   0:42.24 /usr/sbin/varnishd -P /var/run/varnish.pid -f /etc/varnish/default.vcl -a :82 -T 127.0.0.1:6082 -S /etc/varnish/secret -s malloc,256M
 1105 named     20   0  311712 108204   2424 S   0.0  2.8   0:16.41 /usr/sbin/named -u named -c /etc/named.conf
23377 nobody    20   0  153240  89432   2432 S   0.0  2.3   4:35.74 nginx: worker process
23376 nobody    20   0  147096  83316   2416 S   0.0  2.1   2:18.09 nginx: worker process
23375 root      20   0  131028  66764   1616 S   0.0  1.7   0:01.07 nginx: master process /usr/sbin/nginx -c /etc/nginx/nginx.conf
23378 nobody    20   0  130988  64592    592 S   0.0  1.7   0:00.51 nginx: cache manager process
 1135 root      20   0   86708  37572   2252 S   0.0  1.0   0:20.18 cwpsrv: worker process
 1133 root      20   0   86708  37544   2212 S   0.0  1.0   0:05.94 cwpsrv: worker process
 3034 root      20   0   86704  36740   1452 S   0.0  0.9   0:00.09 cwpsrv: master process /usr/local/cwpsrv/bin/cwpsrv
 1067 nobody    20   0 1356200  31588   2352 S   0.0  0.8   0:56.06 /usr/local/apache/bin/httpd -k start
  977 nobody    20   0 1356088  31268   2372 S   0.0  0.8   0:30.44 /usr/local/apache/bin/httpd -k start
  968 nobody    20   0 1356216  30544   2348 S   0.0  0.8   0:19.95 /usr/local/apache/bin/httpd -k start

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