[Qgis-user] Qgis-server recompute always the layer bbox ?

[Marco Hugentobler]

Hi Andrea

 >I suspect that QS try always to recalc the box of every layer.

QGIS server caches layers (up to 100, but that can be enhanced using the 
environment variable MAX_CACHE_LAYERS).  Furthermore, the 
GetCapabilities documents are cached (so no recalculation if using FastCGI).

 >Perhaps a different usage of spatialite driver between qgis desktop 
and qgis-server ?

QGIS server uses the public API, so it should be exactly the same usage. 
Must be some other difference (libspatialite version?)

Regards,
Marco

On 13.02.2014 23:34, Andrea Peri wrote:
> Hi,
> I partially resolved.
>
> The framework I sued will allow me bypass the getcapabilities phase 
> and go directly to the getmap phase.
> Initizally also the getmap phase seem to be too slow, but after some 
> try I notice that a slow bottleneck is the change of SRS.
> So fixing the SRS to the same of the dataset will gain a bit of speed 
> and now the time to wait is quite acceptable.
> The strange is that the qgis desktop on my notebook , using the same 
> project and the same datasets is more, more speeder than my server 
> where there is the qgis-server.
>
> We use a spatialite db.
> Perhaps a different usage of spatialite driver between qgis desktop 
> and qgis-server ?
> Actually I don't know.
>
> Regards,
> Andrea.
>
>
>
> 2014-02-13 11:30 GMT+01:00 Andrea Peri <aperi2007 at gmail.com 
> <mailto:aperi2007 at gmail.com>>:
>
>     Hi I'm trying to publish with qgis.server a project with some huge
>     dayaset. Actually the getcapabilities tale about 40 sec to return.
>     I suspect that QS try always to recalc the box of every layer.
>     Is confirmed that qgis.server recompute always the box for every
>     request ?
>     If confirmed, There is an option to avoid this ?
>
>     THX,
>     Andrea
>
>
>
>
> -- 
> -----------------
> Andrea Peri
> . . . . . . . . .
> qwerty àèìòù
> -----------------
>
>
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-- 
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

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