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- Performance monitoring tool - sar
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bonnie 2020-07-18 22:50:56 +08:00
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[unixbench](https://github.com/kdlucas/byte-unixbench) - the original BYTE UNIX benchmark suite, provide a basic indicator of the performance of a Unix-like system. [unixbench](https://github.com/kdlucas/byte-unixbench) - the original BYTE UNIX benchmark suite, provide a basic indicator of the performance of a Unix-like system.
[wrk](https://github.com/wg/wrk) - HTTP benchmark. [wrk](https://github.com/wg/wrk) - HTTP benchmark.
##### Performance monitoring tool - sar
```bash
# installation
# It collects the data every 10 minutes and generate its report daily. crontab file (/etc/cron.d/sysstat) is responsible for collecting and generating reports.
yum install sysstat
systemctl start sysstat
systemctl enable sysstat
# show CPU utilization 5 times every 2 seconds.
sar 2 5
# show memory utilization 5 times every 2 seconds.
sar -r 2 5
# show paging statistics 5 times every 2 seconds.
sar -B 2 5
# To generate all network statistic:
sar -n ALL
# reading SAR log file using -f
$ sar -f /var/log/sa/sa31|tail
##### Show a listing of last logged in users. ##### Show a listing of last logged in users.
```bash ```bash