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.

<~~source~~ lang="bash">

# see how memory is being used (in Megabytes)

# hit "Ctrl C" to cancel

watch -n 1 --differences free -m

</~~source~~>

</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 ==

@@ Line 4: / Line 4: @@
 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.
-<source lang="bash">
+<syntaxhighlight lang="bash">
 # see how memory is being used (in Megabytes)
 # hit "Ctrl C" to cancel
 watch -n 1 --differences free -m
-</source>
+</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 ==