[Qgis-user] questions about the FOSSGIS 2013 benchmark comparisons between QGIS Server and UMN Mapserver

[Marco Hugentobler]

 >It is important that you test QGIS master not QGIS 1.8. QGIS 1.8 was 
definitely slower than UMN, but in master there are performance 
improvements in the server part. Marco >knows the details.

There have been a lot of performance improvements in QGIS core (e.g. the 
new raster system, svg cache, more performant coordinate reprojection, 
CRS and Coordinate transform cache, project file cache, ...).

Nore that the benchmark especially measures the scalability of the WMS 
server (many concurrent requests). For scalability, it is important that 
as much is CPU-based and data comes from RAM rather than from disk. 
While a desktop user e.g. does not notice a request to the sqlite DB to 
lookup a CRS definition, this small disk access had a big impact on 
scalability. Similarly for SVG files, project files, coordinate 
transformations. All these things are cached now on first usage.

Regards,
Marco

On 21.06.2013 13:10, Andreas Neumann wrote:
> Hi Giovanni,
>
> It is important that you test QGIS master not QGIS 1.8. QGIS 1.8 was 
> definitely slower than UMN, but in master there are performance 
> improvements in the server part. Marco knows the details.
>
> Andreas
>
> On Fri, 21 Jun 2013 12:09:18 +0200, G. Allegri wrote:
>> Hi,
>> I was reading the graphs (I do not understand german, sorry) of the
>> slides from Sourcepole about their banchmarks [1].
>> I was surprised to see how QGIS Server outperforms UMN Mapserver,
>> because my experience was different. I haven't done comparisons in the
>> last months. In the past performances didn't appear better then
>> Mapserver.
>>
>> Marco (and the ohters from Sourcepole), could you share the
>> configurations adopted for the benchmark? Hardware, http server
>> configuration, caching, tiling, etc.? Something is written inside the
>> PDF, but Google Translator isn't doing a great work :(
>>
>> Thanks a lot,
>> Giovanni
>>
>>
>> [1] http://sourcepole.ch/assets/2013/6/17/fossgis_2013_performanceoptimierte_wms_dienste.pdf 
>>
>> [1]
>


-- 
Dr. Marco Hugentobler
Sourcepole -  Linux & Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee