[Gluster-users] Lots of connections on clients - appropriate values for various thread parameters

[Amar Tumballi Suryanarayan]

What does self-heal pending numbers show?

On Mon, Mar 4, 2019 at 7:52 PM Hu Bert <revirii at googlemail.com> wrote:

> Hi Alberto,
>
> wow, good hint! We switched from old servers with version 4.1.6 to new
> servers (fresh install) with version 5.3 on february 5th. I saw that
> there was more network traffic on server side, but didn't watch it on
> client side - the traffic went up significantly on both sides, from
> about 20-40 MBit/s up to 200 MBit/s, on server side from about 20-40
> MBit/s up to 500 MBit/s. Here's a screenshot of the munin graphs:
>
> network traffic on high iowait client:
> https://abload.de/img/client-eth1-traffic76j4i.jpg
> network traffic on old servers:
> https://abload.de/img/oldservers-eth1nejzt.jpg
> network traffic on new servers:
> https://abload.de/img/newservers-eth17ojkf.jpg
>
> Don't know if that's related to our iowait problem, maybe only a
> correlation. But we see the same high network traffic with v5.3.
>
>
> Thx,
> Hubert
>
> Am Mo., 4. März 2019 um 14:57 Uhr schrieb Alberto Bengoa
> <alberto at bengoa.com.br>:
> >
> > Hello Hubert,
> >
> > On Mon, 4 Mar 2019 at 10:56, Hu Bert <revirii at googlemail.com> wrote:
> >>
> >> Hi Raghavendra,
> >>
> >> at the moment iowait and cpu consumption is quite low, the main
> >> problems appear during the weekend (high traffic, especially on
> >> sunday), so either we have to wait until next sunday or use a time
> >> machine ;-)
> >>
> >
> > Check if your high IO Wait is not related to high network traffic. We
> had to left 5.3 version due this issue[1]:
> >
> > [1] - https://bugzilla.redhat.com/show_bug.cgi?id=1673058
> >
> > Cheers,
> > Alberto
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-- 
Amar Tumballi (amarts)
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