linux 프로세스별 CPU 사용량 확인

linux에서 ps 명령을 통해 프로세스별 CPU 사용량 확인해보기

---

ps -aux --sort -pcpu

$ ps -aux --sort -pcpu|more
USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root        1014  0.1  0.1 2085844 49692 ?       Ssl  Oct02   3:37 /usr/bin/containerd
root        5678  0.1  1.8 15310052 738596 pts/0 Ssl+ Oct02   5:30 java -Dspring.profiles.active=prod -jar app.jar
root           1  0.0  0.0 167908 11636 ?        Ss   Oct02   0:11 /sbin/init splash
root           2  0.0  0.0      0     0 ?        S    Oct02   0:00 [kthreadd]
root           3  0.0  0.0      0     0 ?        I<   Oct02   0:00 [rcu_gp]
root           4  0.0  0.0      0     0 ?        I<   Oct02   0:00 [rcu_par_gp]
root           5  0.0  0.0      0     0 ?        I<   Oct02   0:00 [netns]
root           7  0.0  0.0      0     0 ?        I<   Oct02   0:00 [kworker/0:0H-events_highpri]
root           9  0.0  0.0      0     0 ?        I<   Oct02   0:00 [kworker/0:1H-kblockd]

 

head 명령을 통해 결과 개수 조정

$ ps -aux --sort -pcpu|head -n 11
USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
root        1014  0.1  0.1 2085844 49692 ?       Ssl  Oct02   3:37 /usr/bin/containerd
root        5678  0.1  1.8 15310052 738596 pts/0 Ssl+ Oct02   5:30 java -Dspring.profiles.active=prod -jar app.jar
root           1  0.0  0.0 167908 11636 ?        Ss   Oct02   0:11 /sbin/init splash
root           2  0.0  0.0      0     0 ?        S    Oct02   0:00 [kthreadd]
root           3  0.0  0.0      0     0 ?        I<   Oct02   0:00 [rcu_gp]
root           4  0.0  0.0      0     0 ?        I<   Oct02   0:00 [rcu_par_gp]
root           5  0.0  0.0      0     0 ?        I<   Oct02   0:00 [netns]
root           7  0.0  0.0      0     0 ?        I<   Oct02   0:00 [kworker/0:0H-events_highpri]
root           9  0.0  0.0      0     0 ?        I<   Oct02   0:00 [kworker/0:1H-kblockd]
root          10  0.0  0.0      0     0 ?        I<   Oct02   0:00 [mm_percpu_wq]

• head -n 명령으로 개수 조정
  • 헤드를 포함해서 n개 출력 +1 해서 계산

---

---