Linxu查看进程内存占用

[root@MiWiFi-R4-srv ~]# top
 
top - 21:40:29 up 4 min,  2 users,  load average: 1.19, 0.77, 0.35
Tasks: 234 total,   1 running, 233 sleeping,   0 stopped,   0 zombie
%Cpu(s):  1.4 us,  0.7 sy,  0.0 ni, 98.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  3861236 total,  1290276 free,  1393708 used,  1177252 buff/cache
KiB Swap:  4063228 total,  4063228 free,        0 used.  2204132 avail Mem 
 
   PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                                        
  1654 root      20   0  338416  62152  31064 S  1.3  1.6   0:00.83 X                                                              
  3077 root      20   0 2786912 211476  76504 S  1.3  5.5   0:03.77 gnome-shell                                                    
  2302 polkitd   20   0 1314752 383668  18956 S  0.7  9.9   0:02.87 mysqld                                                         
  3575 root      20   0  687972  28416  17668 S  0.3  0.7   0:00.23 gnome-terminal-                                                
     1 root      20   0  128436   7104   4224 S  0.0  0.2   0:01.71 systemd                                                        
     2 root      20   0       0      0      0 S  0.0  0.0   0:00.00 kthreadd                                                       
     3 root      20   0       0      0      0 S  0.0  0.0   0:00.00 kworker/0:0                                                    
     4 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 kworker/0:0H                                                   
     5 root      20   0       0      0      0 S  0.0  0.0   0:00.02 kworker/u256:0                                                 
     6 root      20   0       0      0      0 S  0.0  0.0   0:00.05 ksoftirqd/0                                                    
     7 root      rt   0       0      0      0 S  0.0  0.0   0:00.00 migration/0                                                    
     8 root      20   0       0      0      0 S  0.0  0.0   0:00.00 rcu_bh                                                         
     9 root      20   0       0      0      0 S  0.0  0.0   0:00.39 rcu_sched                                                      
    10 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 lru-add-drain                                                  
    11 root      rt   0       0      0      0 S  0.0  0.0   0:00.00 watchdog/0                                                     
    13 root      20   0       0      0      0 S  0.0  0.0   0:00.00 kdevtmpfs                                                      
    14 root       0 -20       0      0      0 S  0.0  0.0   0:00.00 netns   

[root@MiWiFi-R4-srv ~]# top -p 2302
 
top - 21:42:05 up 5 min,  2 users,  load average: 0.28, 0.58, 0.32
Tasks:   1 total,   0 running,   1 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.3 us,  0.0 sy,  0.0 ni, 99.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem :  3861236 total,   958228 free,  1391360 used,  1511648 buff/cache
KiB Swap:  4063228 total,  4063228 free,        0 used.  2206032 avail Mem 
 
   PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                                        
  2302 polkitd   20   0 1314752 383668  18956 S  0.3  9.9   0:03.10 mysqld   

top - 21:42:41 up 6 min,  2 users,  load average: 0.15, 0.51, 0.31
Tasks:   1 total,   0 running,   1 sleeping,   0 stopped,   0 zombie
%Cpu(s):  0.7 us,  1.4 sy,  0.0 ni, 98.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
KiB Mem : 42.8/3861236  [|||||||||||||||||||||||||||||||||||||||||||                                                         ]
KiB Swap:  0.0/4063228  [                                                                                                    ]
 
   PID USER      PR  NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND                                                        
  2302 polkitd   20   0 1314752 383668  18956 S  0.3  9.9   0:03.20 mysqld                                                         
 

[root@MiWiFi-R4-srv ~]# ps -p 2302 -o rss
  RSS
383668