[Gluster-users] performance

[Artem Russakovskii]

I'm very curious whether these improvements hold up over the next few days.
Please report back.

Sincerely,
Artem

--
Founder, Android Police <http://www.androidpolice.com>, APK Mirror
<http://www.apkmirror.com/>, Illogical Robot LLC
beerpla.net | @ArtemR <http://twitter.com/ArtemR>


On Wed, Aug 5, 2020 at 9:44 AM Computerisms Corporation <bob at computerisms.ca>
wrote:

> Hi List,
>
> > So, we just moved into a quieter time of the day, but maybe I just
> > stumbled onto something.  I was trying to figure out if/how I could
> > throw more RAM at the problem.  gluster docs says write behind is not a
> > cache unless flush-behind is on.  So seems that is a way to throw ram to
> > it?  I put performance.write-behind-window-size: 512MB and
> > performance.flush-behind: on and the whole system calmed down pretty
> > much immediately.  could be just timing, though, will have to see
> > tomorrow during business hours whether the system stays at a reasonable
> > load.
>
> so reporting back that this seems to have definitely had a significant
> positive effect.
>
> So far today I have not seen the load average climb over 13 with the
> 15minute average hovering around 7.  cpus are still spiking from time to
> time, but they are not staying maxed out all the time, and frequently I
> am seeing brief periods of up to 80% idle.  glusterfs process still
> spiking up to 180% or so, but consistently running around 70%, and the
> brick processes still spiking up to 70-80%, but consistently running
> around 20%.  Disk has only been above 50% in atop once so far today when
> it spiked up to 92%, and still lots of RAM left over.  So far nload even
> seems indicates I could get away with a 100Mbit network connection.
> Websites are snappy relative to what they were, still a bit sluggish on
> the first page of any given site, but tolerable or close to.  Apache
> processes are opening and closing right away, instead of stacking up.
>
> Overall, system is performing pretty much like I would expect it to
> without gluster.  I haven't played with any of the other settings yet,
> just going to leave it like this for a day.
>
> I have to admit I am a little bit suspicious.  I have been arguing with
> Gluster for a very long time, and I have never known it to play this
> nice.  kind feels like when your girl tells you she is "fine";
> conversation has stopped, but you aren't really sure if it's done...
>
> >
> > I will still test the other options you suggested tonight, though, this
> > is probably too good to be true.
> >
> > Can't thank you enough for your input, Strahil, your help is truly
> > appreciated!
> >
> >
> >
> >
> >
> >
> >>
> >>>>
> >>>>
> >>>> Best Regards,
> >>>> Strahil Nikolov
> >>>>
> >>> ________
> >>>
> >>>
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> >
> >
> >
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> > Schedule -
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> ________
>
>
>
> Community Meeting Calendar:
>
> Schedule -
> Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC
> Bridge: https://bluejeans.com/441850968
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