April 2018
Intermediate to advanced
508 pages
15h 22m
English
Content preview from PostgreSQL 10 High Performance - Third Edition
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Graphing with kSar
sar is a very powerful tool, and you can get monitoring data out in all sorts of ways. A popular add-on is the kSar Java application at http://sourceforge.net/projects/ksar/ that allows graphing the data sar saves. Note that kSar can require some local adjustments to work. The outline at http://arsenicks.wordpress.com/2010/01/28/testing-sar-and-ksar/ adjusts the way the data is collected to be compatible with it, and that's the most straightforward way to handle its requirements. It's also possible to convert the files after collection if you can't adjust the server settings, by running it on a new summary file generated with the right locate—something like the following:
export LC_ALL=C sar -A -f /var/log/sysstat/sa15 ...
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