RE : RE : [Benchmarking] Java scalability issue slide

[Cédric Briançon]

Hi,

in Constellation, we also use Java2D to rasterize shapes. So we are 
probably facing the same problem indeed.

Cheers,
Cédric.


Le 08/09/2010 14:50, Luc Donea a écrit :
>
> Hi Andrea,
>
> APOLLO indeed uses Java2D to rasterize shapes. Our developer says that 
> this is a bottleneck, but is balanced by the fact that rasterizing is 
> not the biggest part of the whole WMS request. If we would use 
> multiple processes to do this, it would indeed help, but would also 
> consume a lot more RAM.
>
> The funny thing in that story is that the guy who submitted this bug 
> in 2006 is a former Ionic/ERDAS employee  ;-)
>
> I'm ok that you mention APOLLO.
>
> Regards,
>
> Luc
>
> Apollo utilise bien Java2D pour rasterizer. On subit donc ce problème.
> C'est donc effectivement un bottleneck mais il faut relativiser un peu 
> parce qu'un serveur lorsqu'il sert des cartes ne fait pas que cela.
> Il est clair qu'utiliser plusieurs process permet de s'affranchir 
> quelques peu de cela mais attention à la ram.
>
> Pour la petite info, le gars qui a discuté de cela avec Sun est un 
> certain Stefan Nicoll en 2006. ...
>
> Cela étant la java2D a été initialement désignée pour un comportement 
> client side... On pourrait tjrs patcher ou extraire le code du jdk 
> pour résoudre le problème.
>
>
>
>
> -------- Message d'origine--------
> De: benchmarking-bounces at lists.osgeo.org de la part de Andrea Aime
> Date: mer. 08/09/2010 08:36
> À: Performance testing of OSGeo and other web service engines.
> Objet : Re: RE : [Benchmarking] Java scalability issue slide
>
> Excellent. We don't exactly need to give the full list of server
> names, I could list GeoServer only, but having a larger list would
> help in sending the subtle message to Oracle :-p
>
> Cheers
> Andrea
>
> On Wed, Sep 8, 2010 at 11:30 AM, Luc Donea <Luc.Donea at erdas.com> wrote:
> >
> > Hi Andrea,
> >
> > Your slides seems very good and significant to me, thanks.
> >
> > I still have to check with our WFS developer if we are using Java2D to
> > rasterize the shapes, or some home-cooked component. He will be in the
> > office at 2PM. I'll keep you updated.
> >
> > Regards,
> >
> > Luc
> >
> > -------- Message d'origine--------
> > De: benchmarking-bounces at lists.osgeo.org de la part de Andrea Aime
> > Date: mer. 08/09/2010 05:18
> > À: Performance testing of OSGeo and other web service engines.
> > Objet : [Benchmarking] Java scalability issue slide
> >
> > Hi,
> > among the others I also made a Java scalability issue slide that more
> > or less involves all Java based systems.
> > Can I get some feedback about it from MapViewer, Apollo and
> > Constellation teams as well?
> > It's the last one in this document:
> > 
> http://svn.osgeo.org/osgeo/foss4g/benchmarking/scripts/results/2010/geoserver/geoserver.odp
> >
> > Cheers
> > Andrea
> > _______________________________________________
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> > http://lists.osgeo.org/mailman/listinfo/benchmarking
> >
> >
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