Hi René Luc,
Good points. I also had a look at these stats and was disappointed.
So I agree that it would be worth-wile working on improving the
performance of QGIS server version 3.
On the QgsProject loading performance issue: is this only an issue at
the first loading of the project or every time a request is being made?
Definitely I would welcome a submission at the next round of QGIS grants
to further study the issues and improve perfomance were possible.
Thanks for your thoughts,
Andreas
On 2018-02-08 15:19, René-Luc Dhont wrote:
> Hi Devs,
>
> I have made some analyse of the performances data generated by CampToCamp
> test platform.
> The data are downloadable here
> https://gmf-test.sig.cloud.camptocamp.net/ms_perfs/
> And the tests are based on this docker-pull:
> https://github.com/camptocamp/ms_perfs
>
> The QGIS Server docker used for these tests are based on the Kartoza one
> updated by CampToCamp
> https://github.com/kartoza/docker-qgis-server It is based on Apache Server
> and FCGI.
>
> The data comes from OpenStreetMap and are stored in a PostgreSQL/PostGIS
> database.
> One type of request is tested, GetMap. Varoious number of simultaneous users
> and various scale
> are tested.
>
> To give an answer to the question : Is QGIS Server 3 fast yet ? , I only used
> the values for 10 simultaneous
> users.
>
> If the reference to the question is QGIS Server 2: QGIS Server 3 is NOT
> faster even with the trust option activated in the project.
> QGIS Server 3 is always slower than QGIS Server 2, when only one layer is
> requested.
> In the tests, QGIS Sever 3 is faster than QGIS Server 2 with multi-layers and
> complex styles.
>
> This result can be easily explain by the new way QGIS Server is loaded
> project. QGIS Server 3 uses the QgsProject class, so all the
> project : layers and layouts are loaded even if only one layer is requested.
>
> About the trust project option, the results are a little bit disappointing.
> The performances are not always better than without.
> For higher scale (1° by 800px), requests are slower, but for lower scale
> (0.015625° by 800px), they are faster.
>
> Now if we consired GeoServer-jai as a reference, QGIS Server 3 is slower in
> lower sacle (0.03125° by 800px)
> Now if we consired Mapserver as a reference, QGIS Server 3 is slower!
>
> We have to test some configuration:
> * disable simplify local
> * change simplify max scale
>
> Points of enhancement have to be explored :
> * Faster QgsProject loading based on project parsing
> * Simplify configuration at layer level
> * Completing trust option
>
> Regards,
> René-Luc
> * Enhance simplification
>
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