프로세스의 상태를 실시간 모니터링 할수있다.
top [옵션]
-d 시간 : 화면 갱신 주기
-c : 생략된 명령어 전체 표시
top실행중 명령어
q : top프로그램 종료
숫자 1 : cpu(s)로 표시되어 평균값만 출력하는데 1을 눌러 각각의 cpu 사용량을 볼수 있다.
스페이스바 : 프로세스 상태 갱신
예
top - 14:32:44 up 217 days, 12:45, 1 user, load average: 0.00, 0.02, 0.00
Tasks: 140 total, 1 running, 139 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.5%us, 0.0%sy, 0.0%ni, 99.5%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8126608k total, 5693960k used, 2432648k free, 468156k buffers
Swap: 4192924k total, 1632k used, 4191292k free, 3898592k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 15 0 10368 692 580 S 0.0 0.0 0:14.61 init
1을 누를 경우 예
top - 14:32:04 up 217 days, 12:45, 1 user, load average: 0.00, 0.03, 0.00
Tasks: 140 total, 1 running, 139 sleeping, 0 stopped, 0 zombie
Cpu0 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu1 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu2 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu3 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu4 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu5 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu6 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Cpu7 : 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 8126608k total, 5694084k used, 2432524k free, 468156k buffers
Swap: 4192924k total, 1632k used, 4191292k free, 3898584k cached