[Lizmap] External WMS slowdown

[Paolo Cavallini]

https://lizmap.faunalia.eu/index.php/view/map/?repository=faunalia&project=ext_wms
cheers

Il 30/11/20 17:00, Nicolas Boisteault ha scritto:
> Yes please.
> 
> Le 30/11/2020 à 17:03, Paolo Cavallini a écrit :
>> not for now, but I can set it up if useful
>> cheers.
>>
>> Il 30/11/20 16:59, Nicolas Boisteault ha scritto:
>>> Paolo, do you have any public Lizmap showing this behavior?
>>>
>>> Le 30/11/2020 à 17:00, Paolo Cavallini a écrit :
>>>> exactly. when checking this, I assume all the slowdown is due to Lizmap
>>>> requesting GetCappabilities even before loading layers, which in
>>>> case of
>>>> many WMSs slows down considerably initial loading of the project.
>>>> Cheers.
>>>>
>>>> Il 30/11/20 16:14, Nicolas Boisteault ha scritto:
>>>>> It depends on the "Get images directly from WMS Server" checkbox in
>>>>> Lizmap plugin.
>>>>>
>>>>> Le 30/11/2020 à 15:54, Paolo Cavallini a écrit :
>>>>>> I assume external WMS read directly do not go through qgis.
>>>>>> am I wrong?
>>>>>> cheers.
>>>>>>
>>>>>> Il 30/11/20 12:39, Roberto Marzocchi ha scritto:
>>>>>>> We encountered the same problem.
>>>>>>> Are you sure it is a problem of LWC? I've always thought it is a
>>>>>>> problem
>>>>>>> of QGIS server
>>>>>>>
>>>>>>> R
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>> ---- Attivato gio, 26 nov 2020 11:33:52 +0100 *Paolo Cavallini
>>>>>>> <cavallini at faunalia.it>* ha scritto ----
>>>>>>>
>>>>>>>        Hi all,
>>>>>>>        I noticed that a large number of external WMS in a project
>>>>>>> slows
>>>>>>> down
>>>>>>>        initial loading of the project. I assume this is due to a
>>>>>>>        ``GetCapabilities`` call on project parsing. Am I right? Is
>>>>>>> there a way
>>>>>>>        of avoiding this, and calling ``GetCapabilities`` only on
>>>>>>> layer
>>>>>>>        activation? In this way one could e.g. have external WMS in a
>>>>>>> mutually
>>>>>>>        exclusive group, so only ona call is issued at a time.
>>>>>>>        Thanks for any hint.
>>>>>>>        --
>>>>>>>        Paolo Cavallini
>>>>>>>        www.faunalia.eu - QGIS.org
>>>>>>>        training, support, development on QGIS, PostGIS and more
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>>>>>>>
>>>>>>>
>>>>>>>
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-- 
Paolo Cavallini
www.faunalia.eu - QGIS.org
training, support, development on QGIS, PostGIS and more