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

[Vijay Bellur]

On 05/05/2015 06:39 PM, Mohammed Rafi K C wrote:
>
>
> 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 :-) .
>

Thanks!

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

Yes, there is an ongoing effort to improve our developer guide. We 
expect to see some results soon.

-Vijay