语法格式：
top [参数]
常用参数：
| 参数 | 释义 |
|---|---|
| -d <秒> | 改变显示的更新速度 |
| -c | 切换显示模式 |
| -s | 安全模式，不允许交互式指令 |
| -i | 不显示任何闲置或僵死的行程 |
| -n | 设定显示的总次数，完成后将会自动退出 |
| -b | 批处理模式，不进行交互式显示 |
[root@VM-24-4-centos ~]# top
top - 14:22:52 up 123 days, 23:58, 1 user, load average: 0.02, 0.06, 0.08
Tasks: 106 total, 1 running, 104 sleeping, 0 stopped, 1 zombie
%Cpu(s): 2.8 us, 2.0 sy, 0.0 ni, 95.0 id, 0.2 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 3880172 total, 711620 free, 2004244 used, 1164308 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 1607256 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11375 clickho+ 20 0 7306500 565992 267236 S 7.3 14.6 6:03.20 clickhouse-serv
23326 root 20 0 999664 58372 12812 S 1.3 1.5 255:01.36 YDService
2408 mysql 20 0 1836864 631304 1768 S 0.3 16.3 296:22.75 mysqld
9526 root 20 0 3698216 431040 0 S 0.3 11.1 98:58.84 java
20865 root 20 0 164900 9028 1536 S 0.3 0.2 24:50.25 barad_agent
20866 root 20 0 1204560 15384 2008 S 0.3 0.4 166:04.63 barad_agent
1 root 20 0 51928 3668 2164 S 0.0 0.1 25:38.11 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:06.11 kthreadd
4 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
6 root 20 0 0 0 0 S 0.0 0.0 4:43.22 ksoftirqd/0
………………省略部分输出信息………………[root@VM-24-4-centos ~]# top -c
top - 14:28:48 up 124 days, 4 min, 1 user, load average: 0.12, 0.09, 0.08
Tasks: 107 total, 1 running, 104 sleeping, 0 stopped, 2 zombie
%Cpu(s): 0.7 us, 0.8 sy, 0.0 ni, 98.5 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 3880172 total, 652504 free, 2012784 used, 1214884 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 1598216 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11375 clickho+ 20 0 7306500 573016 267236 S 1.3 14.8 6:19.54 /usr/bin/clickhouse-server --config=/etc/clickhouse-server/config.xml --pid-file=/run/clickhouse-server/clickhouse-server.pid
23326 root 20 0 999664 58632 12812 S 1.0 1.5 255:05.63 /usr/local/qcloud/YunJing/YDEyes/YDService
2408 mysql 20 0 1836864 631304 1768 S 0.3 16.3 296:23.51 /www/server/mysql/bin/mysqld --basedir=/www/server/mysql --datadir=/www/server/data --plugin-dir=/www/server/mysql/lib/plugin --user=mysql --log-error=VM-24-4-centos.err --open-files-limit=65535 --p+
9526 root 20 0 3698216 431040 0 S 0.3 11.1 98:59.43 java -jar ruoyi-admin.jar --server.port=18081
27989 redis 20 0 165148 2532 1200 S 0.3 0.1 98:45.40 /www/server/redis/src/redis-server 0.0.0.0:6379
1 root 20 0 51928 3668 2164 S 0.0 0.1 25:38.16 /usr/lib/systemd/systemd --switched-root --system --deserialize 22
2 root 20 0 0 0 0 S 0.0 0.0 0:06.11 [kthreadd]
4 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 [kworker/0:0H]
6 root 20 0 0 0 0 S 0.0 0.0 4:43.23 [ksoftirqd/0]
7 root rt 0 0 0 0 S 0.0 0.0 1:49.86 [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 0.0 119:34.73 [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 0:44.28 [watchdog/0]
12 root rt 0 0 0 0 S 0.0 0.0 0:40.17 [watchdog/1]
13 root rt 0 0 0 0 S 0.0 0.0 1:45.98 [migration/1]
………………省略部分输出信息………………[root@VM-24-4-centos ~]# top -b
top - 14:30:55 up 124 days, 6 min, 1 user, load average: 0.21, 0.15, 0.11
Tasks: 106 total, 1 running, 104 sleeping, 0 stopped, 1 zombie
%Cpu(s): 3.1 us, 3.1 sy, 0.0 ni, 90.6 id, 0.0 wa, 0.0 hi, 3.1 si, 0.0 st
KiB Mem : 3880172 total, 640160 free, 2008788 used, 1231224 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 1602056 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2408 mysql 20 0 1836864 631304 1768 S 6.7 16.3 296:23.78 mysqld
3312 root 20 0 0 0 0 S 6.7 0.0 1:03.21 kworker/u4:2
1 root 20 0 51928 3668 2164 S 0.0 0.1 25:38.18 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:06.11 kthreadd
4 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
6 root 20 0 0 0 0 S 0.0 0.0 4:43.24 ksoftirqd/0
7 root rt 0 0 0 0 S 0.0 0.0 1:49.86 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 0.0 119:34.83 rcu_sched
………………省略部分输出信息………………
top - 14:30:58 up 124 days, 6 min, 1 user, load average: 0.19, 0.15, 0.11
Tasks: 106 total, 2 running, 103 sleeping, 0 stopped, 1 zombie
%Cpu(s): 0.8 us, 1.0 sy, 0.0 ni, 98.0 id, 0.2 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 3880172 total, 727748 free, 1920604 used, 1231820 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 1690160 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11375 clickho+ 20 0 7306500 482712 267236 S 3.0 12.4 6:25.50 clickhouse-serv
23326 root 20 0 999664 57756 12820 S 1.3 1.5 255:07.04 YDService
20866 root 20 0 1204560 15384 2008 S 0.7 0.4 166:06.87 barad_agent
9 root 20 0 0 0 0 S 0.3 0.0 119:34.84 rcu_sched
1 root 20 0 51928 3668 2164 S 0.0 0.1 25:38.18 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:06.11 kthreadd
4 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
6 root 20 0 0 0 0 S 0.0 0.0 4:43.24 ksoftirqd/0
7 root rt 0 0 0 0 S 0.0 0.0 1:49.86 migration/0
8 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcu_bh
………………省略部分输出信息………………
top - 14:31:01 up 124 days, 7 min, 1 user, load average: 0.19, 0.15, 0.11
Tasks: 106 total, 2 running, 103 sleeping, 0 stopped, 1 zombie
%Cpu(s): 3.0 us, 2.5 sy, 0.0 ni, 94.1 id, 0.3 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 3880172 total, 631760 free, 2015972 used, 1232440 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 1594708 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11375 clickho+ 20 0 7306500 577352 267236 S 10.0 14.9 6:25.80 clickhouse-serv
23326 root 20 0 999664 57756 12820 S 1.0 1.5 255:07.07 YDService
20866 root 20 0 1204560 15384 2008 S 0.7 0.4 166:06.89 barad_agent
2408 mysql 20 0 1836864 631304 1768 S 0.3 16.3 296:23.79 mysqld
9526 root 20 0 3698216 431040 0 S 0.3 11.1 98:59.61 java
20865 root 20 0 164900 9028 1536 S 0.3 0.2 24:50.56 barad_agent
26568 root 20 0 3510360 115652 0 S 0.3 3.0 29:36.64 java
27989 redis 20 0 165148 2532 1200 S 0.3 0.1 98:45.51 redis-server
1 root 20 0 51928 3668 2164 S 0.0 0.1 25:38.18 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:06.11 kthreadd
4 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
………………省略部分输出信息………………
top - 14:31:04 up 124 days, 7 min, 1 user, load average: 0.18, 0.15, 0.11
Tasks: 106 total, 2 running, 103 sleeping, 0 stopped, 1 zombie
%Cpu(s): 0.8 us, 1.3 sy, 0.0 ni, 97.7 id, 0.2 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 3880172 total, 741248 free, 1906472 used, 1232452 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 1704228 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
11375 clickho+ 20 0 7306500 467060 267236 S 1.0 12.0 6:25.83 clickhouse-serv
23326 root 20 0 999664 57756 12820 S 1.0 1.5 255:07.10 YDService
20866 root 20 0 1204560 15384 2008 S 0.7 0.4 166:06.91 barad_agent
9 root 20 0 0 0 0 S 0.3 0.0 119:34.85 rcu_sched
2408 mysql 20 0 1836864 631304 1768 S 0.3 16.3 296:23.80 mysqld
9526 root 20 0 3698216 431040 0 S 0.3 11.1 98:59.62 java
27989 redis 20 0 165148 2532 1200 S 0.3 0.1 98:45.52 redis-server
1 root 20 0 51928 3668 2164 S 0.0 0.1 25:38.18 systemd
2 root 20 0 0 0 0 S 0.0 0.0 0:06.11 kthreadd
4 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kworker/0:0H
………………省略部分输出信息………………