[Qgis-user] QGIS project slow to open when too much wms layers

[aperi2007]

Hi jurgen.

I have don more test using a sniffer.
As report in this
https://lists.osgeo.org/pipermail/qgis-user/2015-December/034593.html

The qgis do not do any request getlegendgraphics at startup .
This is good and well done.

Insteal the problem is on the getcapabilites requests.
They are repeated the same for every single wms layer indipendently if 
it is coming from the same wms service or not.

So for a service with 10 layers (we have a wms service with 100+ layers) 
and these layrs are added to a qgis project
one by one the qgis do 100 times the same getcapabilites requests and 
100 time parse the response.

A good enhancement for me could be to do one single getcapabilities 
request for every distinct wms service used in the project instead that 
one for every layer to avoid this waste redundancy of work.

A.


Il 05/12/2015 16:32, Jürgen E. Fischer ha scritto:
> Hi Andrea,
>
> On Sat, 05. Dec 2015 at 12:54:29 +0100, Andrea Peri wrote:
>> The qgs is calling the same getlegendgraphics 10 times instead of one
>> only time and reusing the same response for the other 9 wms layers.
> Isn't the request different for each layer?   It should have a LAYERS parameter
> for each and if contextual legend is enabled even a bounding box.  So that the
> WMS server can produce a legend for the individual layers and maybe only for
> the things that are visible in the extent and scale.
>
>
> Jürgen
>
>
>
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