sar
: System Activity Report 약어로 시스템의 CPU, 메모리, 입출력 사용량 정보를 수집하고 리포팅하는 명령어이다.
설치
[root@localhost logs]# yum -y install sysstat
옵션
# sar [옵션] [인터벌] [횟수]
-u
: CPU 사용률 정보
[root@localhost ~]# sar -u 1 1
Linux 5.14.0-162.6.1.el9_1.x86_64 (localhost.localdomain) 08/31/23 _x86_64_ (2 CPU)
10:51:31 CPU %user %nice %system %iowait %steal %idle
10:51:32 all 0.00 0.00 0.00 0.00 0.00 100.00
Average: all 0.00 0.00 0.00 0.00 0.00 100.00
-q
: Load Average 확인
[root@localhost ~]# sar -q 1 1
Linux 5.14.0-162.6.1.el9_1.x86_64 (localhost.localdomain) 08/31/23 _x86_64_ (2 CPU)
10:51:46 runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 blocked
10:51:47 0 493 0.04 0.14 0.12 0
Average: 0 493 0.04 0.14 0.12 0
-W
: 스왑 메모리 정보 수집
[root@localhost ~]# sar -W 1 1
Linux 5.14.0-162.6.1.el9_1.x86_64 (localhost.localdomain) 08/31/23 _x86_64_ (2 CPU)
10:51:58 pswpin/s pswpout/s
10:51:59 0.00 0.00
Average: 0.00 0.00
-d
: 블록 디바이스에 대한 정보를 수집
[root@localhost ~]# sar -d 1 1
Linux 5.14.0-162.6.1.el9_1.x86_64 (localhost.localdomain) 08/31/23 _x86_64_ (2 CPU)
10:52:13 DEV tps rkB/s wkB/s dkB/s areq-sz aqu-sz await %util
10:52:14 sda 3.00 0.00 9.50 0.00 3.17 0.00 1.00 0.30
10:52:14 sr0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
10:52:14 dm-0 3.00 0.00 9.50 0.00 3.17 0.00 1.00 0.30
10:52:14 dm-1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: DEV tps rkB/s wkB/s dkB/s areq-sz aqu-sz await %util
Average: sda 3.00 0.00 9.50 0.00 3.17 0.00 1.00 0.30
Average: sr0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: dm-0 3.00 0.00 9.50 0.00 3.17 0.00 1.00 0.30
Average: dm-1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
-n [키워드]
: 네트워크 사용 정보
[root@localhost ~]# sar -n DEV 1 1
Linux 5.14.0-162.6.1.el9_1.x86_64 (localhost.localdomain) 08/31/23 _x86_64_ (2 CPU)
10:52:58 IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil
10:52:59 lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
10:52:59 ens192 3.00 1.00 0.18 0.10 0.00 0.00 0.00 0.00
10:52:59 br-e266c19a3bdd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
10:52:59 docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
10:52:59 veth4a39c9b 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
10:52:59 veth5de4e49 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
10:52:59 veth635826a 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil
Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: ens192 3.00 1.00 0.18 0.10 0.00 0.00 0.00 0.00
Average: br-e266c19a3bdd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: docker0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: veth4a39c9b 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: veth5de4e49 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Average: veth635826a 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
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