Thanks Andrea, nice presentation!
Jakub
2012/8/21 Andrea Aime <[email protected]>
> On Tue, Aug 21, 2012 at 9:17 PM, Gabriel Roldan <[email protected]>wrote:
>
>> I found the graph below in the WMS Benchmarking 2011 presentation result,
>>> but I cant understand one thing. It is tested on Linux server or Windows or
>>> this is the average from both server and only MapServer is divided into 2
>>> values? I need to compare MapServer and GeoServer, but If I take the value
>>> MapServer Win FastCGI and GeoServer, it is more or less same, but if I
>>> compare Mapserver Linux FastCGI and GeoServer, MapServer is much more
>>> better.
>>>
>>>
>> In 2011 the GeoServer tests were run only on Linux, due to lack of
>> dedicated time. Also note we didn't have time to optimize the SLD's or
>> anything else, an ran only a single geoserver instance, whilst if what
>> you're looking for is higher throughput, I think the recommended set up is
>> two-to-four geoserver instances even per physical server, due to the Java2D
>> rasterizer being synchronized. Others may be able to comment better on the
>> issue though.
>>
>
> Yep, look at slide 67 in this presentation to see how much better
> GeoServer can do when you run multiple instances
> on a single physical machine behind a load balancer (please note this
> benchmark was run on a notebook, not on a server
> like the FOSS4G 2011 one, even if the dataset was the same):
>
> http://demo.geo-solutions.it/share/foss4g2011/gs_steroids_sgiannec_foss4g2011.pdf
>
> The above was done using Apache as the load balancer, using something that
> is dedicated to load balacing
> (HAProxy) would lead to better performance (see for example this blog
> entry:
>
> http://geo-solutions.blogspot.it/2012/08/real-world-uses-cases-troubleshooting.html
> )
>
> This model is somehow similar to the one used for MapServer in the
> benchmarks, where they did use 8 instances pinned down with FastCGI.
> The thing that often surprises me is when MapServer users trying out
> GeoServer tell me "wow, GeoServer is fast" because few people use the
> FastCGI configuration, and without it MapServer is significantly slower
> than it was in those tests.
>
> It would be possible to make GeoServer scale better using a single
> instance, it's a matter of rewriting the Java rasterizer (which, in Java 7,
> is something
> that can be done, it has been made pluggable), but it would require quite
> a bit of dedicated funding, it's a hard block of
> software to write that would keep a core developer busy for a month or two
>
> Cheers
> Andrea
>
> --
> ==
> Our support, Your Success! Visit http://opensdi.geo-solutions.it for more
> information.
> ==
>
> Ing. Andrea Aime
> @geowolf
> Technical Lead
>
> GeoSolutions S.A.S.
> Via Poggio alle Viti 1187
> 55054 Massarosa (LU)
> Italy
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>
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>
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