Linux：top命令
原创
查看虚拟机内存使用率
语法：top [-] [d delay] [q] [c] [S] [s] [i] [n] [b]- 显示指定的进程信息
top -p 139
显示进程号为139的进程信息，CPU、内存占用率等[logdev@feed1 service]$ top
top - 18:11:18 up 800 days, 15:29, 4 users, load average: 10.49, 10.17, 10.12
Tasks: 192 total, 3 running, 189 sleeping, 0 stopped, 0 zombie
Cpu(s): 99.3%us, 0.3%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.5%st
Mem: 8058904k total, 7860260k used, 198644k free, 75192k buffers
Swap: 2097148k total, 176648k used, 1920500k free, 2403040k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
26999 root 20 0 10.0g 4.4g 6484 S 793.6 57.9 137988:29 java
960 root 20 0 5769m 339m 6636 S 3.3 4.3 1402:52 java
8571 root 20 0 2305m 66m 2364 S 1.0 0.8 3479:25 titanagent
18466 root 20 0 24568 1456 1156 S 0.3 0.0 23:48.44 zabbix_agentd
1 root 20 0 19232 972 784 S 0.0 0.0 1732:23 init
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root RT 0 0 0 0 S 0.0 0.0 10:44.53 migration/0
4 root 20 0 0 0 0 S 0.0 0.0 11:03.64 ksoftirqd/0
5 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/0
6 root RT 0 0 0 0 S 0.0 0.0 1:36.16 watchdog/0
7 root RT 0 0 0 0 S 0.0 0.0 11:35.91 migration/1
8 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/1
9 root 20 0 0 0 0 S 0.0 0.0 11:07.14 ksoftirqd/1
10 root RT 0 0 0 0 S 0.0 0.0 1:24.42 watchdog/1
11 root RT 0 0 0 0 S 0.0 0.0 6:02.53 migration/2
12 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/2
13 root 20 0 0 0 0 S 0.0 0.0 9:38.78 ksoftirqd/2
14 root RT 0 0 0 0 S 0.0 0.0 1:25.86 watchdog/2
15 root RT 0 0 0 0 S 0.0 0.0 5:15.50 migration/3
16 root RT 0 0 0 0 S 0.0 0.0 0:00.00 stopper/3
17 root 20 0 0 0 0 S 0.0 0.0 12:22.96 ksoftirqd/3
18 root RT 0 0 0 0 S 0.0 0.0 1:23.97 watchdog/3
19 root RT 0 0 0 0 S 0.0 0.0 2:53.09 migration/4- PID：进程的ID
- USER：进程所有者
- PR：进程的优先级别，越小越优先被执行
- NInice：值
- VIRT：进程占用的虚拟内存
- RES：进程占用的物理内存
- SHR：进程使用的共享内存
- S：进程的状态。S表示休眠，R表示正在运行，Z表示僵死状态，N表示该进程优先值为负数
- %CPU：进程占用CPU的使用率
- %MEM：进程使用的物理内存和总内存的百分比
- TIME+：该进程启动后占用的总的CPU时间，即占用CPU使用时间的累加值。
- COMMAND：进程启动命令名称
[logdev@feed1 ~]$ top -Hp 26999
top - 18:21:09 up 800 days, 15:39, 3 users, load average: 10.41, 10.24, 10.14
Tasks: 482 total, 10 running, 472 sleeping, 0 stopped, 0 zombie
Cpu(s): 99.4%us, 0.4%sy, 0.0%ni, 0.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.1%st
Mem: 8058904k total, 7831552k used, 227352k free, 76208k buffers
Swap: 2097148k total, 176648k used, 1920500k free, 2378432k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
9134 root 20 0 10.0g 4.4g 6484 R 99.4 57.9 13032:26 java
9138 root 20 0 10.0g 4.4g 6484 R 99.0 57.9 13543:15 java
9133 root 20 0 10.0g 4.4g 6484 R 98.4 57.9 11864:42 java
9136 root 20 0 10.0g 4.4g 6484 R 98.1 57.9 13265:49 java
9132 root 20 0 10.0g 4.4g 6484 R 97.1 57.9 11349:23 java
9140 root 20 0 10.0g 4.4g 6484 R 91.8 57.9 10440:33 java
9137 root 20 0 10.0g 4.4g 6484 R 54.7 57.9 11617:43 java
9142 root 20 0 10.0g 4.4g 6484 R 52.0 57.9 12088:17 java
9141 root 20 0 10.0g 4.4g 6484 R 50.0 57.9 10651:21 java
9135 root 20 0 10.0g 4.4g 6484 R 49.7 57.9 12784:19 java
27022 root 20 0 10.0g 4.4g 6484 S 0.3 57.9 142:44.17 java
27101 root 20 0 10.0g 4.4g 6484 S 0.3 57.9 30:29.17 java
27206 root 20 0 10.0g 4.4g 6484 S 0.3 57.9 3:52.74 java
27248 root 20 0 10.0g 4.4g 6484 S 0.3 57.9 11:52.98 java
26999 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 0:00.00 java
27000 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 0:00.82 java
27001 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 74:31.52 java
27002 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 75:27.55 java
27003 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 75:26.07 java
27004 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 74:45.99 java
27005 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 75:26.79 java
27006 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 75:33.31 java
27007 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 75:30.22 java
27008 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 75:26.97 java
27009 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 4:48.88 java
27010 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 4:48.70 java
27011 root 20 0 10.0g 4.4g 6484 S 0.0 57.9 31:56.85 java原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
原创声明：本文系作者授权腾讯云开发者社区发表，未经许可，不得转载。
如有侵权，请联系 cloudcommunity@tencent.com 删除。
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