>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
[email protected] http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee
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