Linux 查看CPU、内存、磁盘的命令

喜欢ヅ旅行 2024-03-23 13:58 90阅读 0赞

这里是Ubuntu linux系统；

## 1 查看CPU的命令 ##

输入命令：

top c

显示：

root@iZ2ze0zuq27nx0z96tt9:~# top c
    top - 11:23:30 up 9 min,  1 user,  load average: 0.03, 0.04, 0.02
    Tasks:  84 total,   1 running,  83 sleeping,   0 stopped,   0 zombie
    %Cpu(s):  0.7 us,  0.7 sy,  0.0 ni, 98.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    MiB Mem :    927.4 total,    245.0 free,    190.1 used,    492.3 buff/cache
    MiB Swap:      0.0 total,      0.0 free,      0.0 used.    594.5 avail Mem 
    
        PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                       
          7 root      20   0       0      0      0 I   0.3   0.0   0:00.27 kworker/0:1-events                            
        660 root      10 -10   75568  11720  10284 S   0.3   1.2   0:02.06 AliYunDun                                     
        676 root      10 -10  109788  18324  15792 S   0.3   1.9   0:03.36 AliYunDunMonito                               
          1 root      20   0  102624  12452   8468 S   0.0   1.3   0:01.35 systemd                                       
          2 root      20   0       0      0      0 S   0.0   0.0   0:00.00 kthreadd                                      
          3 root       0 -20       0      0      0 I   0.0   0.0   0:00.00 rcu_gp                                        
          4 root       0 -20       0      0      0 I   0.0   0.0   0:00.00 rcu_par_gp                                    
          6 root       0 -20       0      0      0 I   0.0   0.0   0:00.00 kworker/0:0H-kblockd                          
          8 root      20   0       0      0      0 I   0.0   0.0   0:00.02 kworker/u4:0-events_power_efficient           
          9 root       0 -20       0      0      0 I   0.0   0.0   0:00.00 mm_percpu_wq                                  
         10 root      20   0       0      0      0 S   0.0   0.0   0:00.05 ksoftirqd/0                                   
         11 root      20   0       0      0      0 I   0.0   0.0   0:00.10 rcu_sched                                     
         12 root      rt   0       0      0      0 S   0.0   0.0   0:00.00 migration/0                                   
         13 root     -51   0       0      0      0 S   0.0   0.0   0:00.00 idle_inject/0                                 
         14 root      20   0       0      0      0 S   0.0   0.0   0:00.00 cpuhp/0                                       
         15 root      20   0       0      0      0 S   0.0   0.0   0:00.00 kdevtmpfs                                     
         16 root       0 -20       0      0      0 I   0.0   0.0   0:00.00 netns                                         
         17 root      20   0       0      0      0 S   0.0   0.0   0:00.00 rcu_tasks_kthre                               
         18 root      20   0       0      0      0 S   0.0   0.0   0:00.00 kauditd                                       
         19 root      20   0       0      0      0 S   0.0   0.0   0:00.00 khungtaskd                                    
         20 root      20   0       0      0      0 S   0.0   0.0   0:00.00 oom_reaper                                    
         21 root       0 -20       0      0      0 I   0.0   0.0   0:00.00 writeback                                     
         22 root      20   0       0      0      0 S   0.0   0.0   0:00.00 kcompactd0                                    
         23 root      25   5       0      0      0 S   0.0   0.0   0:00.00 ksmd                                          
         24 root      39  19       0      0      0 S   0.0   0.0   0:00.00 khugepaged                                    
         70 root       0 -20       0      0      0 I   0.0   0.0   0:00.00 kintegrityd                                   
         71 root       0 -20       0      0      0 I   0.0   0.0   0:00.00 kblockd                                       
         72 root       0 -20       0      0      0 I   0.0   0.0   0:00.00 blkcg_punt_bio                                
         73 root       0 -20       0      0      0 I   0.0   0.0   0:00.00 tpm_dev_wq

如果想看某个进程PID的使用情况，  
输入命令：

top -p 660

其中660为PID。  
显示：

root@iZ2ze0zuq27nx0z96tt9:~# top -p 660
    top - 11:26:14 up 12 min,  1 user,  load average: 0.00, 0.02, 0.01
    Tasks:   1 total,   0 running,   1 sleeping,   0 stopped,   0 zombie
    %Cpu(s):  0.7 us,  0.3 sy,  0.0 ni, 99.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    MiB Mem :    927.4 total,    244.0 free,    191.0 used,    492.3 buff/cache
    MiB Swap:      0.0 total,      0.0 free,      0.0 used.    593.5 avail Mem 
    
        PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND                                       
        660 root      10 -10   75568  11720  10284 S   0.3   1.2   0:02.69 AliYunDun

## 2 查看内存的命令 ##

输入命令：

free -m

显示：

root@iZ2ze0zuq27nx0z96tt9:~# free -m
                  total        used        free      shared  buff/cache   available
    Mem:            927         189         245           2         492         594
    Swap:             0           0           0

## 3 查看磁盘的命令 ##

输入命令：

df -h

显示：

root@iZ2ze0zuq27nx0z96tt9:~# df -h
    Filesystem      Size  Used Avail Use% Mounted on
    udev            436M     0  436M   0% /dev
    tmpfs            93M  700K   93M   1% /run
    /dev/vda1        40G   33G  5.2G  87% /
    tmpfs           464M     0  464M   0% /dev/shm
    tmpfs           5.0M     0  5.0M   0% /run/lock
    tmpfs           464M     0  464M   0% /sys/fs/cgroup
    tmpfs            93M     0   93M   0% /run/user/0