[Benchmarking] GS 2.0.1 results shed some light on the GS-MS similarities

[Eric Lemoine]

On Wednesday, February 17, 2010, Andrea Aime <aaime at opengeo.org> wrote:
> Hi,
> lately I managed to run the FOSS4G 2009 vector benchmarks
> against GS 2.0.1 (as well as against the older GeoServer 1.7.0
> used in the FOSS4G 2008 benchmarks) and the results
> are interesting:
> http://geoserver.org/display/GEOS/GeoServer+benchmarks
>
> The interesting part is in a number of vector tests where
> GS 2.0.1 and GS 1.7.0 are substantially faster than the
> pack of results we got during the FOSS4G 2009 results,
> in particular the areawater and gnis 2009 ones.
>
> GeoServer 2.0.0 was benchmarked by mistake with a very
> high PNG compression ratio, that actually slowed GS
> down quite a bit. Once I restored a compression level
> similar to the one used in MapServer I got the speedup
> you can see.
>
> Long story short, in the areawater and gnis tests there
> was no strangely hidden bottleneck in the network,
> the speedup clearly shows those tests are dominated by
> the image compression, and thus by the CPU.
>
> The results also show that for GeoServer labelling is
> a bottleneck in the labelled tests, as we did not get
> much of a speedup there.
>
> In the light of these new results I don't really see
> the network playing any significant role, and I'm
> guessing the very similar results we got were just
> due to chance (bad chance for us in GeoServer land ;-) )
>
> Opinions?


Thanks for following up on this Andrea. IIRC MS and GS exhibited
similar performance when rendering things from PostGIS. Could you
verify that network or disk wasn't bottleneck in that case either?

-- 
Eric Lemoine

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