查找Linux进程占用内存

查找Linux某些服务进程占用内存： 可通过服务名找到对应的进程PID，再根据PID查找内存占用

方法1：top

方法2：ps -aux | sort -k4nr | head -10

# ps -aux | sort -k4nr | head -10
polkitd  20177  0.0  4.7 1076676 89984 ?       Ssl  Jul09   6:35 mariadbd
root       350  0.0  3.7 153944 70872 ?        Ss    2021  20:43 /usr/lib/systemd/systemd-journald
root     30961  0.0  2.4 1048828 46312 ?       Ssl  Apr10  18:45 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
root       977  0.0  2.2 741280 43120 ?        Ssl   2021  22:53 /usr/sbin/rsyslogd -n
root     12949  2.8  2.1 280784 41028 ?        S<sl Jul10 807:56 /usr/local/aegis/aegis_client/aegis_11_33/AliYunDun
polkitd   8808  0.0  1.7  98424 32020 ?        S    09:13   0:07 php-fpm: pool www
polkitd  10136  0.1  1.6  96440 31404 ?        S    05:04   1:30 php-fpm: pool www
root      8613  0.0  1.3 1089008 25820 ?       Ssl   2021  68:16 /usr/bin/containerd
root       840  0.0  0.7 574284 13208 ?        Ssl   2021  35:39 /usr/bin/python2 -Es /usr/sbin/tuned -l -P
polkitd   8795  0.0  0.6  76092 11520 ?        S    09:12   0:06 php-fpm: pool www

方法3：按内存大小排序，打印出所有的进程

ps aux --sort -rss

# ps aux --sort -rss
USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
polkitd  20177  0.0  4.7 1076676 89984 ?       Ssl  Jul09   6:35 mariadbd
root       350  0.0  3.7 153944 70872 ?        Ss    2021  20:43 /usr/lib/systemd/systemd-journald
root     30961  0.0  2.4 1048828 46312 ?       Ssl  Apr10  18:45 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/cont
root       977  0.0  2.2 741280 43120 ?        Ssl   2021  22:53 /usr/sbin/rsyslogd -n
root     12949  2.8  2.1 280784 41028 ?        S<sl Jul10 807:57 /usr/local/aegis/aegis_client/aegis_11_33/AliYunDun
polkitd   8808  0.0  1.7  98424 32020 ?        S    09:13   0:07 php-fpm: pool www
polkitd  10136  0.1  1.6  96440 31404 ?        S    05:04   1:30 php-fpm: pool www
root      8613  0.0  1.3 1089008 25820 ?       Ssl   2021  68:16 /usr/bin/containerd
root       840  0.0  0.7 574284 13208 ?        Ssl   2021  35:39 /usr/bin/python2 -Es /usr/sbin/tuned -l -P
polkitd   8795  0.0  0.6  76092 11520 ?        S    09:12   0:06 php-fpm: pool www
polkitd    516  0.0  0.4 612336  9140 ?        Ssl   2021   0:45 /usr/lib/polkit-1/polkitd --no-debug
root     32014  0.0  0.4 805636  7588 ?        Ssl  Jul21   9:56 /usr/local/share/aliyun-assist/2.2.3.315/aliyun-service
root     27401  0.0  0.3  72816  7156 ?        Ss   Jul09   1:10 php-fpm: master process (/apps/php/etc/php-fpm.conf)
root     20159  0.0  0.3 711688  6064 ?        Sl   Jul09   0:49 /usr/bin/containerd-shim-runc-v2 -namespace moby -id 1e6e5c
root     27351  0.0  0.3 711176  6036 ?        Sl   Jul09   0:47 /usr/bin/containerd-shim-runc-v2 -namespace moby -id 8d0d22
root      2586  0.1  0.3 157592  5936 ?        Ss   23:48   0:00 sshd: root@pts/2
root      2622  0.1  0.3 157592  5848 ?        Ss   23:48   0:00 sshd: root@notty