[Gluster-users] gluster volume set performance.io-thread-count N

[Bryan Whitehead]

Ok, I think I remember this discussion:
http://gluster.org/pipermail/gluster-users/2012-February/009590.html

Is this patch applied in future versions? Is it in general safe for me to
use?


On Thu, Mar 1, 2012 at 9:09 AM, Anand Avati <anand.avati at gmail.com> wrote:

> On Fri, Feb 24, 2012 at 3:23 PM, Bryan Whitehead <driver at megahappy.net>
> wrote:
> > How long does it take for gluster volume set performance.io-thread-count
> 64
> > (as an example) to propagate?
> >
> > I've noticed that it seems like mounted volumes don't get the performance
> > boost until i restart glusterd on the boxes. Is this wrong? Should I
> just be
> > more patient?
> >
> > (note: I'm using infiniband and raid-10; "set performance.io-thread-count
> > 64" makes writes go from ~70MB/sec to ~200MB/sec).
> >
>
>
> the io-thread-count parameter is a configuration of the maximum number
> of threads (not the fixed number of threads). The actual number of
> threads scale up with the number of active (sys)calls in transit
> (today logarithmically, but we're making it more effective, closer to
> linear) with io-thread-count acting as a cap.
>
> Thanks,
> Avati
>
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