Thank you Andrea for your quick answer.
The project is in production, and there is no option to change design now.
What's your recommandations in using threads in GeoServer ?
best regards
Bsh
2011/3/15 Andrea Aime <[email protected]>
> On Tue, Mar 15, 2011 at 7:49 PM, Boubakar <[email protected]> wrote:
> > Hello,
> >
> > We're using a Geoserver, and we've a performance problems in production
> with
> > a large number of users.
> >
> > We've made some load test with : 250, 150, and 20 threads. We've noticed
> > that Geoserver works better with 20 threads than with 150 threads, and
> when
> > thread number increase (150 or 250), performance decrease.
> >
> > Is it normal ? How Geoserver manage the users request ? Does Geoserver
> use
> > asynchronous strategy to manage users request ?
>
> It is normal. Anedoctal evidence shows you get to use 100% of your cores
> when you have 2 to 4 GetMaps per core, past that it can only get worse.
>
> That's one of the reason why I've made the control-flow module time ago,
> if you want to run at peak performance you should stop at the point
> where you already use 100% of your resources and start queuing requests
> instead of executing them in parallel.
> The docs page lists other reasons why using control flow is useful:
>
> http://docs.geoserver.org/2.1.x/en/user/community/controlflow/index.html
>
> Btw, that module works only in recent builds, don't try to use it against
> 2.0.2 or it will lock up your server
>
> Cheers
> Andrea
>
> --
> -------------------------------------------------------
> Ing. Andrea Aime
> GeoSolutions S.A.S.
> Tech lead
>
> Via Poggio alle Viti 1187
> 55054 Massarosa (LU)
> Italy
>
> phone: +39 0584 962313
> fax: +39 0584 962313
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>
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>
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