This is not comprehensive data but some interesting bits
Average time taken for various commands in our .t files.
* glusterd - 2 second
* gluster vol start/stop - 3 second
* gluster vol set/info(any basic gluster cli command) -1 second
* gluster mount - 2 second
* gluster add brick - 2 second
* gluster remove brick - 5 second
* gluster rebalance start 5 second
* gluster tier attach/detach - 6 second
The only other single command which takes 1+ second is sleep. Most of the other
external commands we use in bash scripts are not that time taking.
Hence,
1. Don't stop/delete a gluster volume in .t file unless it is part of your test. Let the cleanup function handle that.
2. Don't call gluster vol info at the start of the test if not required
3. Merge as many tests as possible to reduce glusterd starts/vol starts and mounts.
4. Use sleep only if it is absolutely required.
You can use this bug https://bugzilla.redhat.com/show_bug.cgi?id=1294826 to send patches to improve test times.
Thanks,
Raghavendra Talur
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