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

[Mohammed Rafi K C]

On 05/05/2015 05:24 PM, Vijay Bellur wrote:
> On 05/05/2015 04:34 PM, Kingsley wrote:
>> 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?
>
>
> Thanks for this feedback. This is something that I would like to see
> captured too.
>
> Raghavendra, Rafi - would you be able to help create a document on
> this one?
I would be happy to contribute for this, but I can only spend time after
3.7 release :-) .

Along with the performance turning guide, we can also enhance our
development guide.

Rafi KC
>
> -Vijay