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Sysops Notepad

[LINUX] disk io 상태 확인하기 본문

업무/sys

[LINUX] disk io 상태 확인하기

sysops 2021. 11. 9. 16:52

 

iostat명령어는 CPU 사용률과 디스크 장치 및 파티션에 대한 IO 통계 정보를 출력합니다.

[root@s~]# iostat 
Linux 3.10.0-1160.11.1.el7.x86_64  11/09/2021      _x86_64_        (6 CPU)

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           8.24    1.20   19.63    0.02    0.00   70.91

Device:            tps    kB_read/s    kB_wrtn/s    kB_read    kB_wrtn
sda               7.58       127.67       134.32 2374313503 2497805296
sdb               3.10        10.98       193.42  204229564 3596904712

iotop명령어는 모든 프로세스의 IO 통계를 출력합니다.

[root@ ~]# iotop
Total DISK READ :       0.00 B/s | Total DISK WRITE :       0.00 B/s
Actual DISK READ:       0.00 B/s | Actual DISK WRITE:       0.00 B/s
  TID  PRIO  USER     DISK READ  DISK WRITE  SWAPIN     IO>    COMMAND                                                                                   
18432 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % containerd-shim-runc-v2  -address /run/containerd/containerd.sock
    1 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % systemd --switched-root --system --deserialize 22
    2 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kthreadd]
    4 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kworker/0:0H]
    6 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [ksoftirqd/0]
    7 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [migration/0]
    8 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [rcu_bh]
    9 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [rcu_sched]
   10 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [lru-add-drain]
   11 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [watchdog/0]
   12 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [watchdog/1]
   13 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [migration/1]
   14 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [ksoftirqd/1]
   16 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kworker/1:0H]
   17 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [watchdog/2]
   18 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [migration/2]
   19 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [ksoftirqd/2]
 6164 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [monitor.sh]
   21 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kworker/2:0H]
   22 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [watchdog/3]
   23 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [migration/3]
   24 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [ksoftirqd/3]
   26 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kworker/3:0H]
   27 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [watchdog/4]
   28 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [migration/4]
   29 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [ksoftirqd/4]
   31 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kworker/4:0H]
   32 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [watchdog/5]
   33 rt/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [migration/5]
   34 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [ksoftirqd/5]
   36 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kworker/5:0H]
   38 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kdevtmpfs]
   39 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [netns]
   40 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [khungtaskd]
   41 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [writeback]
   42 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kintegrityd]
   43 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [bioset]
   44 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [bioset]
   45 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [bioset]
   46 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kblockd]
   47 be/0 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [md]

 

iotop "--only"옵션으로 현재 io중인 프로세스만 확인 가능합니다.

[root@ ~]# iotop --only
Total DISK READ :       0.00 B/s | Total DISK WRITE :      23.17 K/s
Actual DISK READ:       0.00 B/s | Actual DISK WRITE:      42.47 K/s
  TID  PRIO  USER     DISK READ  DISK WRITE  SWAPIN     IO>    COMMAND                                                                                   
18504 be/4 gitlab-r    0.00 B/s    0.00 B/s  0.00 %  0.00 % sh /usr/bin/VBoxManage --version​

 

 

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