[Qgis-user] 2.18.13: WMS caching deactivated?

[Richard Duivenvoorde]

Hi Bernd,

tested your WMS in current master

If I go to Options/Network/Cache settings, it is at least with me set to
a 'cache' directory in my current profile (so readable/writable).

If I look into the sub dirs in that dir, I see at least some
cache/data8/2/31780thr.d like files created

But I agree that even when you do not move your canvas (by only
switching between scale 50.000 and 100.000) that it takes several
seconds all the time..

In debug messages, I see a full url being created all the time, not sure
if these messages:

(cacheReplyProgress) [102ms] [thread:0x7f2a38072160] 3290598 of unknown
number of bytes of map downloaded.

is actually a cached image reply or not...

I also see this message: not sure if that is ok or not.
Trying to draw a WMS image on the main thread. Stop it!

Last question would be for me: IS it possible to cache WMS's? I mean,
normally the exact scale, bbox etc are never exactly the same.
So QGIS could only really cache in the case I mentioned above, when the
user does not toch mapcanvas but only switches by using the Scale dropdown.

But maybe Juergen or other WMS-dev's can elaborate on that?

Regards,

Richard Duivenvoorde

On 13-01-18 18:08, Bernd Vogelgesang wrote:
> Hello,
> I am bumping my mail from last october which got no reactions, but I
> still face the same problems, now even in 2.99.
> It seems to me that ordinary WMS layers do not get cached, or the cache
> is not read. Anyway, zooming or panning takes "ages" (ca. 4 seconds) to
> render the image with the WMS as the only layer.
> I already had this problem on Linux Mint with 2.18.x and now it's the
> same with 2.99
> 
> Could s.o. maybe test this with
> http://www.geodaten.bayern.de/ogc/ogc_dop200_oa.cgi? in e.g. EPSG: 25832 ?
> 
> Thanks,
> Bernd
> 
> 
> 
> 
> Am 22.10.2017, 14:48 Uhr, schrieb Bernd Vogelgesang
> <bernd.vogelgesang at gmx.de>:
> 
>> Hi,
>>
>> im using the ubuntugis nightlies on Linux. For some time I have the
>> impression, that WMS caching does not work anymore. My usual ortho
>> image WMS I use takes ages to load, and normally it showed the numbers
>> of tiles dowloaded/loaded from chache. This doesn't happen anymore.
>> Is this a local problem or do others observe this as well?
>>
>> Cheers
>> Bernd
>>
> 
>