SysStat : How to use2021/03/17 |
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How to use SysStat.
To input [sar] command with specifying options like follows, it's possible to display logs. (refer to [man sar] for more details)
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| [1] | Display today's statics reports. |
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# CPU [root@dlp ~]# sar -u Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 22:49:41 LINUX RESTART (4 CPU) 10:50:00 PM CPU %user %nice %system %iowait %steal %idle 10:55:00 PM all 0.00 0.00 0.07 0.03 0.00 99.90 11:00:00 PM all 0.00 0.00 0.01 0.00 0.00 99.98 11:05:00 PM all 0.01 0.09 0.07 0.01 0.00 99.82 Average: all 0.01 0.03 0.05 0.01 0.00 99.90 # memory [root@dlp ~]# sar -r Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 22:49:41 LINUX RESTART (4 CPU) 10:50:00 PM kbmemfree kbavail kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 10:55:00 PM 7337956 7504384 616056 7.75 3164 375340 336364 3.03 204492 260952 4 11:00:00 PM 7338132 7504556 615880 7.74 3164 375344 335544 3.02 204520 261116 0 11:05:00 PM 7336600 7504152 617412 7.76 3164 376476 329228 2.97 223452 243628 0 Average: 7337563 7504364 616449 7.75 3164 375720 333712 3.01 210821 255232 1 # I/O [root@dlp ~]# sar -b Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 22:49:41 LINUX RESTART (4 CPU) 10:50:00 PM tps rtps wtps bread/s bwrtn/s 10:55:00 PM 1.54 0.04 1.50 9.65 196.75 11:00:00 PM 0.14 0.00 0.14 0.00 1.74 11:05:00 PM 0.66 0.04 0.63 7.44 20.69 Average: 0.78 0.03 0.75 5.70 73.06 # network [root@dlp ~]# sar -n DEV Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 22:49:41 LINUX RESTART (4 CPU) 10:50:00 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 10:55:00 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 10:55:00 PM enp1s0 0.61 0.06 0.03 0.00 0.00 0.00 0.00 0.00 11:00:00 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 11:00:00 PM enp1s0 0.64 0.05 0.08 0.00 0.00 0.00 0.00 0.00 11:05:00 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 11:05:00 PM enp1s0 0.71 0.22 0.09 0.02 0.00 0.00 0.00 0.00 Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: enp1s0 0.65 0.11 0.07 0.01 0.00 0.00 0.00 0.00 # load avarage [root@dlp ~]# sar -q Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 22:49:41 LINUX RESTART (4 CPU) 10:50:00 PM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 blocked 10:55:00 PM 1 166 0.00 0.04 0.02 0 11:00:00 PM 0 169 0.00 0.01 0.00 0 11:05:00 PM 0 170 0.00 0.00 0.00 0 Average: 0 168 0.00 0.02 0.01 0 |
| [2] | Display past statics with specifying a log file. Log files are stored under the [/var/log/sa] directory by default. |
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# display all statics by a log file [root@dlp ~]# sar -A -f /var/log/sa/sa16 Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 22:49:41 LINUX RESTART (4 CPU) 10:50:00 PM CPU %usr %nice %sys %iowait %steal %irq %soft %guest %gnice %idle 10:55:00 PM all 0.00 0.00 0.02 0.03 0.00 0.05 0.01 0.00 0.00 99.90 10:55:00 PM 0 0.00 0.00 0.01 0.00 0.00 0.00 0.00 0.00 0.00 99.99 ..... ..... 11:05:00 PM 2 0.71 0.00 0.00 0.00 0.00 11:10:00 PM all 0.62 0.00 0.00 0.00 0.00 11:10:00 PM 2 0.62 0.00 0.00 0.00 0.00 Average: all 0.64 0.00 0.00 0.00 0.00 Average: 2 0.64 0.00 0.00 0.00 0.00 # display the load average with specifying times by a log file [root@dlp ~]# sar -q -s 22:00:00 -e 00:00:00 -f /var/log/sa/sa16 Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 22:49:41 LINUX RESTART (4 CPU) 10:50:00 PM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 blocked 10:55:00 PM 1 166 0.00 0.04 0.02 0 11:00:00 PM 0 169 0.00 0.01 0.00 0 11:05:00 PM 0 170 0.00 0.00 0.00 0 11:10:00 PM 0 167 0.00 0.00 0.00 0 Average: 0 168 0.00 0.01 0.01 0 |
| [3] | Display current statics. |
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# display CPU utilization per a second 3 times [root@dlp ~]# sar -u 1 3 Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 11:13:02 PM CPU %user %nice %system %iowait %steal %idle 11:13:03 PM all 0.00 0.00 0.00 0.00 0.00 100.00 11:13:04 PM all 0.00 0.00 0.00 0.00 0.00 100.00 11:13:05 PM all 0.00 0.00 0.25 0.00 0.00 99.75 Average: all 0.00 0.00 0.08 0.00 0.00 99.92 # display I/O and network per 2 seconds 5 times [root@dlp ~]# sar -b -n DEV 2 5 Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 11:13:19 PM tps rtps wtps bread/s bwrtn/s 11:13:21 PM 0.00 0.00 0.00 0.00 0.00 11:13:19 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 11:13:21 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 11:13:21 PM enp1s0 0.50 0.00 0.03 0.00 0.00 0.00 0.00 0.00 ..... ..... 11:13:27 PM tps rtps wtps bread/s bwrtn/s 11:13:29 PM 0.00 0.00 0.00 0.00 0.00 11:13:27 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 11:13:29 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 11:13:29 PM enp1s0 0.50 0.00 0.03 0.00 0.00 0.00 0.00 0.00 Average: tps rtps wtps bread/s bwrtn/s Average: 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: enp1s0 0.50 0.00 0.03 0.00 0.00 0.00 0.00 0.00 |
| [4] | SysStat packages includes other commands not only[Sar] command, so it's possible to display current statics with them like follows. |
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# display I/O with Mega bytes per 2 seconds [root@dlp ~]# iostat -mx -d 2 Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) Device r/s w/s rMB/s wMB/s rrqm/s wrqm/s %rrqm %wrqm r_await w_await aqu-sz rareq-sz wareq-sz svctm %util vda 7.17 1.00 0.22 0.05 0.02 0.26 0.27 20.72 0.10 6.62 0.01 31.59 47.49 0.80 0.65 dm-0 5.74 1.25 0.19 0.05 0.00 0.00 0.00 0.00 0.11 5.76 0.01 34.73 37.85 0.92 0.64 dm-1 0.06 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.15 0.00 0.00 22.65 0.00 0.19 0.00 Device r/s w/s rMB/s wMB/s rrqm/s wrqm/s %rrqm %wrqm r_await w_await aqu-sz rareq-sz wareq-sz svctm %util vda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 dm-0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 dm-1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ..... ..... # display all CPU utilization per 2 seconds 3 times [root@dlp ~]# mpstat -P ALL 2 3 Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 11:14:32 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle 11:14:34 PM all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 11:14:34 PM 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 11:14:34 PM 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 11:14:34 PM 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 11:14:34 PM 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 ..... ..... 11:14:36 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle 11:14:38 PM all 0.00 0.00 0.00 0.00 0.12 0.00 0.00 0.00 0.00 99.88 11:14:38 PM 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 11:14:38 PM 1 0.00 0.00 0.00 0.00 0.50 0.00 0.00 0.00 0.00 99.50 11:14:38 PM 2 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 11:14:38 PM 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 Average: CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle Average: all 0.00 0.00 0.04 0.00 0.08 0.00 0.00 0.00 0.00 99.88 Average: 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 Average: 1 0.00 0.00 0.00 0.00 0.33 0.00 0.00 0.00 0.00 99.67 Average: 2 0.00 0.00 0.17 0.00 0.00 0.00 0.00 0.00 0.00 99.83 Average: 3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 # display memory utilization of specific process per a second 3 times [root@dlp ~]# pidstat -r -p 940 1 3 Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) 11:16:04 PM UID PID minflt/s majflt/s VSZ RSS %MEM Command 11:16:05 PM 0 940 0.00 0.00 92312 7164 0.09 sshd 11:16:06 PM 0 940 0.00 0.00 92312 7164 0.09 sshd 11:16:07 PM 0 940 0.00 0.00 92312 7164 0.09 sshd Average: 0 940 0.00 0.00 92312 7164 0.09 sshd # display CIFS statics with Mega bytes per a 1 second 3 times [root@dlp ~]# cifsiostat -m 1 3 Linux 4.18.0-277.el8.x86_64 (dlp.srv.world) 03/16/2021 _x86_64_ (4 CPU) Filesystem rMB/s wMB/s rops/s wops/s fo/s fc/s fd/s \\smb.srv.world\Share 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Filesystem rMB/s wMB/s rops/s wops/s fo/s fc/s fd/s \\smb.srv.world\Share 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Filesystem rMB/s wMB/s rops/s wops/s fo/s fc/s fd/s \\smb.srv.world\Share 0.00 0.00 0.00 0.00 0.00 0.00 0.00 |
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