Gluster users - Oct 2015 - Test results and Performance Tuning efforts ...

Thanks, good to know.

On 13 October 2015 at 11:57, Paul Cuzner <pcuzner at redhat.com> wrote:
> I don't think so. The workaround affects how glusterd is working. The
> performance fix benefit with epoll is on the glusterfsd daemons - AFAIK.
>
> Perhaps one of the devs can chime in to confirm the impact.
>
>
> On Tue, Oct 13, 2015 at 2:53 PM, Lindsay Mathieson <
> lindsay.mathieson at gmail.com> wrote:
>
>>
>> On 13 October 2015 at 11:51, Paul Cuzner <pcuzner at redhat.com>
wrote:
>>
>>> add
>>> # for epoll issue glusterd crash fix
>>>     option ping-timeout 0
>>>     option event-threads  1
>>>
>>> to your glusterd.vol files (/etc/glusterfs/glusterd.vol)
>>
>>
>>
>>
>>
>> Thanks, yah I saw that.
>>
>> Won't that remove the performance benefits though?
>>
>> --
>> Lindsay
>>
>
>

-- 
Lindsay
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----- Original Message -----
> From: "Lindsay Mathieson" <lindsay.mathieson at gmail.com>
> To: "Paul Cuzner" <pcuzner at redhat.com>
> Cc: "Ben Turner" <bturner at redhat.com>,
"gluster-users" <gluster-users at gluster.org>
> Sent: Monday, October 12, 2015 10:44:49 PM
> Subject: Re: [Gluster-users] Test results and Performance Tuning efforts
...
> 
> Thanks, good to know.
> 
> On 13 October 2015 at 11:57, Paul Cuzner <pcuzner at redhat.com>
wrote:
> 
> > I don't think so. The workaround affects how glusterd is working.
The
> > performance fix benefit with epoll is on the glusterfsd daemons -
AFAIK.
> >
> > Perhaps one of the devs can chime in to confirm the impact.
Hmm I think it will negate the MT epoll perf improvement.  Try setting what Paul
suggested and do gluster v info, if you see:

server.event-threads: 1
client.event-threads: 1

In your gluster v info output then I think it will negate things.  @Shyam - can
you confirm / deny this?

-b
> >
> >
> > On Tue, Oct 13, 2015 at 2:53 PM, Lindsay Mathieson <
> > lindsay.mathieson at gmail.com> wrote:
> >
> >>
> >> On 13 October 2015 at 11:51, Paul Cuzner <pcuzner at
redhat.com> wrote:
> >>
> >>> add
> >>> # for epoll issue glusterd crash fix
> >>>     option ping-timeout 0
> >>>     option event-threads  1
> >>>
> >>> to your glusterd.vol files (/etc/glusterfs/glusterd.vol)
> >>
> >>
> >>
> >>
> >>
> >> Thanks, yah I saw that.
> >>
> >> Won't that remove the performance benefits though?
> >>
> >> --
> >> Lindsay
> >>
> >
> >
> 
> 
> --
> Lindsay
>