Thanks Marco. Caching, caching and caching :)<div>Next days I'm going to setup a QGIS server from master to test the improvements. I will also test its behaviour behind a MapProxy instance with tiling and a complex labeled layer, to see the outputs with meta tiling and tile buffering. I'm gonna stress it!</div>
<div><br></div><div>giovanni</div><div><br><div class="gmail_quote">2013/6/22 Marco Hugentobler <span dir="ltr"><<a href="mailto:marco.hugentobler@sourcepole.ch" target="_blank">marco.hugentobler@sourcepole.ch</a>></span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">>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.<br>
<br></div>
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, ...).<br>
<br>
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.<br>
<br>
Regards,<br>
Marco<div class="im"><br>
<br>
On 21.06.2013 13:10, Andreas Neumann wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Giovanni,<br>
<br>
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.<br>
<br>
Andreas<br>
<br>
On Fri, 21 Jun 2013 12:09:18 +0200, G. Allegri wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
I was reading the graphs (I do not understand german, sorry) of the<br>
slides from Sourcepole about their banchmarks [1].<br>
I was surprised to see how QGIS Server outperforms UMN Mapserver,<br>
because my experience was different. I haven't done comparisons in the<br>
last months. In the past performances didn't appear better then<br>
Mapserver.<br>
<br>
Marco (and the ohters from Sourcepole), could you share the<br>
configurations adopted for the benchmark? Hardware, http server<br>
configuration, caching, tiling, etc.? Something is written inside the<br>
PDF, but Google Translator isn't doing a great work :(<br>
<br>
Thanks a lot,<br>
Giovanni<br>
<br>
<br>
[1] <a href="http://sourcepole.ch/assets/2013/6/17/fossgis_2013_performanceoptimierte_wms_dienste.pdf" target="_blank">http://sourcepole.ch/assets/<u></u>2013/6/17/fossgis_2013_<u></u>performanceoptimierte_wms_<u></u>dienste.pdf</a> <br>
[1]<br>
</blockquote>
<br>
</blockquote>
<br>
<br>
-- <br></div>
Dr. Marco Hugentobler<br>
Sourcepole - Linux & Open Source Solutions<br>
Weberstrasse 5, CH-8004 Zürich, Switzerland<br>
<a href="mailto:marco.hugentobler@sourcepole.ch" target="_blank">marco.hugentobler@sourcepole.<u></u>ch</a> <a href="http://www.sourcepole.ch" target="_blank">http://www.sourcepole.ch</a><br>
Technical Advisor QGIS Project Steering Committee<div class="HOEnZb"><div class="h5"><br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br>Giovanni Allegri<br><a href="http://about.me/giovanniallegri" target="_blank">http://about.me/giovanniallegri</a><br>blog: <a href="http://blog.spaziogis.it" target="_blank">http://blog.spaziogis.it</a><br>
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