SysStat : How to Use2019/08/08 |
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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 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 02:27:56 PM LINUX RESTART (2 CPU) 02:35:01 PM CPU %user %nice %system %iowait %steal %idle 02:45:01 PM all 3.87 0.00 3.18 8.53 0.03 84.39 02:55:01 PM all 3.43 0.00 6.04 25.27 0.00 65.26 ..... ..... 03:55:01 PM all 0.69 0.00 0.98 7.97 0.00 90.36 Average: all 1.46 0.00 1.90 9.91 0.01 86.73 # memory root@dlp:~# sar -r Linux 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 02:27:56 PM LINUX RESTART (2 CPU) 02:35:01 PM kbmemfree kbavail kbmemused %memused kbbuffers kbcached kbcommit %commit kbactive kbinact kbdirty 02:45:01 PM 3176392 3614980 161576 4.00 40632 588252 1117132 13.56 285096 473024 30476 ..... ..... 03:55:01 PM 2894808 3470984 289140 7.15 130416 638840 1356028 16.46 505068 513336 28 Average: 2961894 3504414 259840 6.43 104306 630592 1292892 15.70 449082 507818 3828 # I/O root@dlp:~# sar -b Linux 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 02:27:56 PM LINUX RESTART (2 CPU) 02:35:01 PM tps rtps wtps bread/s bwrtn/s 02:45:01 PM 36.23 4.58 31.65 547.18 2403.07 ..... ..... 03:55:01 PM 19.39 0.00 19.39 0.00 467.76 Average: 25.92 0.59 25.33 69.15 855.43 # network root@dlp:~# sar -n DEV Linux 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 02:27:56 PM LINUX RESTART (2 CPU) 02:35:01 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 02:45:01 PM lo 0.01 0.01 0.00 0.00 0.00 0.00 0.00 0.00 ..... ..... 03:55:01 PM lo 6.65 6.65 0.41 0.41 0.00 0.00 0.00 0.00 03:55:01 PM ens2 2.12 0.55 0.22 0.13 0.00 0.00 0.00 0.00 Average: lo 4.11 4.11 0.26 0.26 0.00 0.00 0.00 0.00 Average: ens2 2.82 0.99 9.34 0.24 0.00 0.00 0.00 0.0 # load avarage root@dlp:~# sar -q Linux 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 02:27:56 PM LINUX RESTART (2 CPU) 02:35:01 PM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 blocked 02:45:01 PM 0 141 0.89 0.56 0.29 0 ..... ..... 03:45:01 PM 0 200 0.41 0.35 0.34 1 03:55:01 PM 0 200 0.46 0.40 0.37 0 Average: 0 184 0.47 0.48 0.44 0 |
| [2] | Display past statics with specifying a log file. Log files are stored under the /var/log/sysstat directory. |
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# display all statics by a log file root@dlp:~# sar -A -f /var/log/sysstat/sa08 Linux 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 02:27:56 PM LINUX RESTART (2 CPU) 02:35:01 PM CPU %usr %nice %sys %iowait %steal %irq %soft %guest %gnice %idle 02:45:01 PM all 3.87 0.00 3.13 8.53 0.03 0.00 0.06 0.00 0.00 84.39 02:45:01 PM 0 4.02 0.00 3.02 8.11 0.00 0.00 0.04 0.00 0.00 84.80 ..... ..... Average: CPU total/s dropd/s squeezd/s rx_rps/s flw_lim/s Average: all 6.93 0.00 0.01 0.00 0.00 Average: 0 1.90 0.00 0.01 0.00 0.00 Average: 1 5.03 0.00 0.01 0.00 0.00 # display the load average with specifying times by a log file root@dlp:~# sar -q -s 15:00:00 -e 16:00:00 -f /var/log/sysstat/sa08 Linux 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 03:05:02 PM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 blocked 03:15:01 PM 0 200 0.32 0.32 0.44 0 03:25:01 PM 0 200 0.25 0.23 0.33 0 03:35:01 PM 0 200 0.67 0.43 0.37 0 03:45:01 PM 0 200 0.41 0.35 0.34 1 03:55:01 PM 0 200 0.46 0.40 0.37 0 Average: 0 200 0.42 0.35 0.37 0 |
| [3] | Display current statics. |
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# display CPU utilization per a second 3 times root@dlp:~# sar -u 1 3 Linux 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 04:03:50 PM CPU %user %nice %system %iowait %steal %idle 04:03:51 PM all 0.50 0.00 1.50 5.50 0.00 92.50 04:03:52 PM all 0.00 0.00 1.01 3.54 0.00 95.45 04:03:53 PM all 0.50 0.00 1.50 9.50 0.00 88.50 Average: all 0.33 0.00 1.34 6.19 0.00 92.14 # display I/O and network per 2 seconds 5 times root@dlp:~# sar -b -n DEV 2 5 Linux 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 04:04:07 PM tps rtps wtps bread/s bwrtn/s 04:04:09 PM 10.50 0.00 10.50 0.00 188.00 04:04:07 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 04:04:09 PM lo 5.00 5.00 0.28 0.28 0.00 0.00 0.00 0.00 04:04:09 PM ens2 1.50 0.00 0.08 0.00 0.00 0.00 0.00 0.00 ..... ..... 04:04:15 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil 04:04:17 PM lo 15.00 15.00 1.01 1.01 0.00 0.00 0.00 0.00 04:04:17 PM ens2 6.50 3.50 1.50 1.16 0.00 0.00 0.00 0.00 Average: tps rtps wtps bread/s bwrtn/s Average: 17.00 0.00 17.00 0.00 307.20 Average: IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s %ifutil Average: lo 9.00 9.00 0.66 0.66 0.00 0.00 0.00 0.00 Average: ens2 4.30 2.60 0.77 0.99 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 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 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 1.51 22.99 0.05 0.37 0.00 12.50 0.00 35.23 0.21 8.56 0.01 33.65 16.46 0.35 0.86 dm-0 1.45 35.49 0.05 0.39 0.00 0.00 0.00 0.00 0.20 5.71 0.20 33.83 11.17 5.09 18.80 dm-1 0.02 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.03 0.00 0.00 24.21 0.00 0.03 0.00 ..... ..... # display all CPU utilization per 2 seconds 3 times root@dlp:~# mpstat -P ALL 2 3 Linux 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 04:05:17 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle 04:05:19 PM all 0.75 0.00 1.00 8.98 0.00 0.25 0.00 0.00 0.00 89.03 04:05:19 PM 0 1.00 0.00 1.00 13.50 0.00 0.00 0.00 0.00 0.00 84.50 04:05:19 PM 1 0.50 0.00 1.00 4.48 0.00 0.50 0.00 0.00 0.00 93.53 ..... ..... 04:05:21 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle 04:05:23 PM all 0.74 0.00 2.23 10.67 0.00 0.00 0.25 0.00 0.00 86.10 04:05:23 PM 0 0.99 0.00 1.49 20.30 0.00 0.00 0.00 0.00 0.00 77.23 04:05:23 PM 1 0.50 0.00 2.99 1.00 0.00 0.00 0.50 0.00 0.00 95.02 Average: CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle Average: all 0.67 0.00 1.66 11.72 0.00 0.08 0.08 0.00 0.00 85.79 Average: 0 0.83 0.00 1.00 20.93 0.00 0.00 0.00 0.00 0.00 77.24 Average: 1 0.50 0.00 2.33 2.50 0.00 0.17 0.17 0.00 0.00 94.34 # display memory utilization of a process per a second 3 times root@dlp:~# pidstat -r -p 383 1 3 Linux 4.19.0-5-amd64 (dlp.srv.world) 08/08/2019 _x86_64_ (2 CPU) 04:06:39 PM UID PID minflt/s majflt/s VSZ RSS %MEM Command 04:06:40 PM 998 383 0.00 0.00 165764 30328 0.75 netdata 04:06:41 PM 998 383 0.00 0.00 165764 30328 0.75 netdata 04:06:42 PM 998 383 1.00 0.00 165764 30328 0.75 netdata Average: 998 383 0.33 0.00 165764 30328 0.75 netdata ..... ..... # display CIFS statics with Mega bytes per a 1 second 3 times root@dlp:~# cifsiostat -m 1 3 Filesystem: rB/s wB/s rops/s wops/s fo/s fc/s fd/s \\10.0.0.100\tmp 0.00 20.93 0.00 0.00 0.00 0.00 0.00 ..... ..... |
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