[Gluster-users] performance tuning - list of available options?

[Kingsley]

On Tue, 2015-05-05 at 15:08 +0530, Vijay Bellur wrote:
[snip] 
> I have seen this before and it primarily seems to be related to the 
> readdir calls done by git clone.
> 
> Turning on these options might help to some extent:
> 
> gluster volume set <volname> performance.readdir-ahead on
> 
> gluster volume set <volname> cluster.readdir-optimize on

Is there a list of all performance tuning options, and a description of
what they do? Even better if it details pros/cons of using a particular
option, or circumstances in which you might want to use it.

If such a list exists, it would be very useful. I've tried googling but
can only find pages for very old versions (eg gluster 3.2) and only
detailing /some/ options.

Knowing what the value defaults to would also be handy. In a separate
thread, someone advised me to do "gluster volume set <VOLNAME>
performance.flush-behind off", but when I found that didn't help (the
issue turned out to be something I was doing, not a fault in gluster) I
couldn't figure out what the default value was, so I didn't know whether
to leave it off, or whether it had previously been on.

Is there anything available?

-- 
Cheers,
Kingsley.