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SysStat : How to Use
2016/06/06 |
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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 01:10:01 AM CPU %user %nice %system %iowait %steal %idle 10:20:01 AM all 0.90 0.00 0.23 1.19 0.03 97.65 ... ... 01:30:01 PM all 0.04 0.00 0.06 0.14 0.04 99.72 Average: all 3.60 0.00 0.05 0.21 0.01 96.13 # memory root@dlp:~# sar -r 01:10:01 AM kbmemfree kbmemused %memused kbbuffers kbcached kbcommit %commit 10:20:01 AM 3681144 241544 6.16 10744 138392 83984 1.04 ... ... 01:40:01 PM 3663328 259360 6.61 14752 145988 87996 1.09 Average: 3666930 255758 6.52 13204 144710 88273 1.10 # I/O root@dlp:~# sar -b 01:10:01 AM tps rtps wtps bread/s bwrtn/s 10:20:01 AM 45.21 9.35 35.87 257.22 409.24 ... ... 01:40:01 PM 0.52 0.00 0.52 0.00 5.43 Average: 3.11 0.49 2.62 14.55 29.32 # network root@dlp:~# sar -n DEV 01:10:01 AM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 10:20:01 AM lo 1.04 1.04 0.09 0.09 0.00 0.00 0.00 10:20:01 AM eth0 7.48 4.48 10.06 0.30 0.00 0.00 0.00 ... ... 01:40:01 PM lo 0.01 0.01 0.00 0.00 0.00 0.00 0.00 01:40:01 PM eth0 0.05 0.04 0.00 0.00 0.00 0.00 0.00 Average: lo 0.08 0.08 0.01 0.01 0.00 0.00 0.00 Average: eth0 0.54 0.38 0.51 0.03 0.00 0.00 0.00 # load avarage root@dlp:~# sar -q 01:10:01 AM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 10:20:01 AM 1 99 0.04 0.07 0.04 ... ... 01:30:01 PM 1 104 0.00 0.00 0.00 01:40:01 PM 1 101 0.00 0.00 0.00 Average: 1 102 0.11 0.08 0.06 |
| [2] | Display past statics with specifying a log file. Log files are stored under the /var/log/sa directory. |
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# display all statisc by a log file root@dlp:~# sar -A -f /var/log/sysstat/sa15 01:10:01 AM CPU %usr %nice %sys %iowait %steal %irq %soft %guest %idle 10:20:01 AM all 0.90 0.00 0.19 1.19 0.03 0.04 0.00 0.00 97.65 10:20:01 AM 0 0.96 0.00 0.19 1.27 0.03 0.04 0.00 0.00 97.51 ... ... 01:50:01 PM 125 3 4 0 0 0 02:00:01 PM 125 3 4 0 0 0 Average: 122 3 4 0 0 0 # display the load average with specifying times by a log file root@dlp:~# sar -q -s 11:00:00 -e 12:00:00 -f /var/log/sysstat/sa15 11:00:01 AM runq-sz plist-sz ldavg-1 ldavg-5 ldavg-15 11:10:01 AM 1 103 0.01 0.03 0.14 11:20:01 AM 1 102 0.01 0.01 0.06 11:30:01 AM 1 102 0.00 0.00 0.01 11:40:01 AM 1 101 0.00 0.00 0.00 11:50:01 AM 1 101 0.01 0.01 0.00 Average: 1 102 0.01 0.01 0.04 |
| [3] | Display current statics. |
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# display CPU utilization per a second 3 times root@dlp:~# sar -u 1 3 01:51:34 AM CPU %user %nice %system %iowait %steal %idle 01:51:35 AM all 0.00 0.00 0.50 0.00 0.00 99.50 01:51:36 AM all 0.00 0.00 0.00 0.00 0.50 99.50 01:51:37 AM all 0.00 0.00 0.00 0.00 0.00 100.00 Average: all 0.00 0.00 0.17 0.00 0.17 99.67 # display I/O and network per 2 seconds 5 times root@dlp:~# sar -b -n DEV 2 5 01:54:11 AM tps rtps wtps bread/s bwrtn/s 01:54:13 AM 0.00 0.00 0.00 0.00 0.00 01:54:11 AM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 01:54:13 AM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:54:13 AM eth0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 ... ... 01:54:19 AM tps rtps wtps bread/s bwrtn/s 01:54:21 AM 0.00 0.00 0.00 0.00 0.00 01:54:19 AM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s 01:54:21 AM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 01:54:21 AM eth0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: tps rtps wtps bread/s bwrtn/s Average: 0.70 0.00 0.70 0.00 4.80 Average: IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s Average: lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Average: eth0 0.20 0.00 0.01 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 Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s avgrq-sz avgqu-sz await svctm %util vda 0.11 1.05 0.43 0.63 0.01 0.01 28.44 0.05 51.01 9.29 0.99 dm-0 0.00 0.00 0.48 1.65 0.01 0.01 14.05 0.20 95.25 4.64 0.99 dm-1 0.00 0.00 0.02 0.00 0.00 0.00 8.00 0.00 1.14 0.52 0.00 ... ... # display all CPU utilization per 2 seconds 3 times root@dlp:~# mpstat -P ALL 2 3 02:28:57 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle 02:28:59 PM all 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 02:28:59 PM 0 0.00 0.00 0.00 0.00 0.50 0.00 0.00 0.00 99.50 02:28:59 PM 1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 100.00 ... ... # display memory utilization of a process per a second 3 times root@dlp:~# pidstat -r -p 789 1 3 02:34:07 PM PID minflt/s majflt/s VSZ RSS %MEM Command 02:34:08 PM 1202 0.00 0.00 175360 2456 0.06 httpd 02:34:09 PM 1202 0.00 0.00 175360 2456 0.06 httpd 02:34:10 PM 1202 0.00 0.00 175360 2456 0.06 httpd Average: 1202 0.00 0.00 175360 2456 0.06 httpd ... ... # 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 ... ... |