Performance tuning: Difference between revisions
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One good article on the subject is at http://www.ibm.com/developerworks/linux/library/l-linux-memory.html They talk about using the "free" command to look at your memory. Although you can add a <code>-s</code> switch to redo the command every so many seconds, this will just run output scrolling through your console, so the better option would be to use <code>free</code> in tandem with <code>watch</code> which has the added benefit of being capable of highlighting the differences for you. | One good article on the subject is at http://www.ibm.com/developerworks/linux/library/l-linux-memory.html They talk about using the "free" command to look at your memory. Although you can add a <code>-s</code> switch to redo the command every so many seconds, this will just run output scrolling through your console, so the better option would be to use <code>free</code> in tandem with <code>watch</code> which has the added benefit of being capable of highlighting the differences for you. | ||
< | <syntaxhighlight lang="bash"> | ||
# see how memory is being used (in Megabytes) | # see how memory is being used (in Megabytes) | ||
# hit "Ctrl C" to cancel | # hit "Ctrl C" to cancel | ||
watch -n 1 --differences free -m | watch -n 1 --differences free -m | ||
</ | </syntaxhighlight> | ||
Amazon Web Services (AWS) points to [https://fasterdata.es.net/host-tuning/background/ this article on host tuning] as reference (; which is very lame in my opinion. Amazon should have a whole wiki dedicated to host tuning!) | |||
== Tools == | |||
What tools should be used to measure performance and tune system variables? | |||
https://k6.io/ K6 is a performance testing tool, but their install instructions don't work for RedHat, so we'll skip it for now. | |||
[https://www.joedog.org/siege-home/ siege] (and [https://github.com/JoeDog/siege here]) is an old standby, which installs effortlessly, so we'll give that a try | |||
== See Also == | == See Also == | ||
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[[Category:System Administration]] | [[Category:System Administration]] | ||
[[Category:Development]] | |||
[[Category:Performance]] | |||