OS환경 : Oracle Linux 6.4 (64bit)
방법 : Oracle Linux 6 서버 cpu, memory 사용량 확인
리눅스 6에서 cpu나 메모리 사용량을 확인하는법을 설명함
cpu 사용량 확인(top 명령)
상단 Cpus(s)부분에서 사용량 확인 가능
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# top
top - 20:11:10 up 5 min, 1 user, load average: 0.19, 0.41, 0.22
Tasks: 113 total, 2 running, 111 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.5%sy, 0.0%ni, 98.2%id, 1.4%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 4037808k total, 348364k used, 3689444k free, 27680k buffers
Swap: 10239996k total, 0k used, 10239996k free, 123184k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4593 root 20 0 99.8m 7360 6328 R 0.5 0.2 0:00.11 sshd
1 root 20 0 19416 2332 2020 S 0.0 0.1 0:02.02 init
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ksoftirqd/0
5 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 0:00.07 kworker/u128:0
7 root 20 0 0 0 0 S 0.0 0.0 0:00.17 rcu_sched
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 0:00.08 rcuos/0
10 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rcuob/0
11 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
12 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
13 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 khelper
14 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kdevtmpfs
15 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 netns
16 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 perf
17 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khungtaskd
18 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 writeback
19 root 25 5 0 0 0 S 0.0 0.0 0:00.00 ksmd
20 root 39 19 0 0 0 S 0.0 0.0 0:00.03 khugepaged
21 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 crypto
22 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kintegrityd
23 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bioset
24 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kblockd
25 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 ata_sff
26 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 md
27 root 20 0 0 0 0 S 0.0 0.0 0:02.26 kworker/0:1
29 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kswapd0
30 root 20 0 0 0 0 S 0.0 0.0 0:00.00 fsnotify_mark
42 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kthrotld
43 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 acpi_thermal_pm
44 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kworker/u128:1
45 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 kpsmoused
46 root 20 0 0 0 0 S 0.0 0.0 0:01.61 kworker/0:2
47 root 0 -20 0 0 0 S 0.0 0.0 0:00.00 bcache
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메모리 사용량 확인(free 명령)
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메모리 사용량 kb 단위로 확인
# free -k
total used free shared buffers cached
Mem: 4037808 347756 3690052 1660 27612 122896
-/+ buffers/cache: 197248 3840560
Swap: 10239996 0 10239996
메모리 사용량 mb 단위로 확인
# free -m
total used free shared buffers cached
Mem: 3943 339 3603 1 26 120
-/+ buffers/cache: 192 3750
Swap: 9999 0 9999
메모리 사용량 gb 단위로 확인
# free -g
total used free shared buffers cached
Mem: 3 0 3 0 0 0
-/+ buffers/cache: 0 3
Swap: 9 0 9
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참조 :
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