Centos环境自写脚本查看使用php或nginx占用内存详解程序员

# cd ~    //进入home目录 
# vim .bashrc            //编辑文件，把下面代码放入地址 
 
mem ()  
{ 
    top -n1 -b | head -n7 | sed '1,6d' && top -n1 -b | sed '1,7d' | grep --color=auto $1; 
    ps aux | grep --color=auto $1 | grep --color=auto -v grep | awk -F " " '{ sum += $6 } END { printf "Total Memory Usage: %.1f MB/n", sum/1024 }' 
}

# source .bashrc   //使命令生效

[[email protected] ~]# mem php 
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                                         
24984 root      20   0  336m 8212 1640 S  0.0  0.8   0:00.03 php-fpm                                                                                                         
24985 www       20   0  336m 7776 1192 S  0.0  0.8   0:00.01 php-fpm                                                                                                         
24986 www       20   0  336m 7776 1192 S  0.0  0.8   0:00.01 php-fpm                                                                                                         
24987 www       20   0  336m 7776 1192 S  0.0  0.8   0:00.05 php-fpm                                                                                                         
24988 www       20   0  336m 7776 1192 S  0.0  0.8   0:00.03 php-fpm                                                                                                         
24989 www       20   0  336m 7784 1196 S  0.0  0.8   0:00.00 php-fpm                                                                                                         
24990 www       20   0  336m 7784 1196 S  0.0  0.8   0:00.01 php-fpm                                                                                                         
24991 www       20   0  336m  78m  71m S  0.0  7.9   0:07.50 php-fpm                                                                                                         
24992 www       20   0  336m 7784 1196 S  0.0  0.8   0:00.04 php-fpm                                                                                                         
24993 www       20   0  336m  77m  70m S  0.0  7.8   0:09.19 php-fpm                                                                                                         
24994 www       20   0  340m  84m  74m S  0.0  8.6   0:07.78 php-fpm                                                                                                         
Total Memory Usage: 301.4 MB

[[email protected] ~]# mem nginx 
  PID USER      PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND                                                                                                         
 2824 root      20   0 40660 2684  488 S  0.0  0.3   0:00.01 nginx                                                                                                           
 2832 www       20   0 71380  27m 1124 S  0.0  2.8   0:00.99 nginx                                                                                                           
 2833 www       20   0 71380  22m 1036 S  0.0  2.3   0:00.46 nginx                                                                                                           
 2834 www       20   0 71380  29m 1180 S  0.0  3.0   0:02.92 nginx                                                                                                           
 2835 www       20   0 71380  29m 1120 S  0.0  3.0   0:11.48 nginx                                                                                                           
Total Memory Usage: 111.2 MB