[Qgis-user] QGIS server 3 improvements

[Régis Haubourg]

Hi Lewis, 
thanks for raising the issue here. The performance of QGIS server rendering
is a long standing work in the QGIS community. We have been working recently
on a test platform that helps in driving development by checking rendering
performances every night at http://test.qgis.org/perf_test/

The performance of QGIS server are conditioned by a lot of factors, and we
are currently investigating what could have caused some slower results for
lines and polygons, and what could explain a slower server than the desktop. 

You can now take benefit of the multithread rendering that will speed up a
lot if you have available cores. 

Good news from today, we might have found a really simple explanation for
one issue. We still have to issue a Pull Request to fix it, and check that
it works in all contexts. 

Could you precise what differences you see, give some metrics before/after,
a description of your datasets, etc...?

Best regards
Régis




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