Hi Marco,
I have a question in this context (I thought I made ticket but cannot
find it)
What is the sense of setting the bounding box in OWS tab if it is always
calculated to the sum of the bboxes of the layers in the project? IMHO
setting the bbox in the project properties should override any
calculation result.
Background: One of my layers became empty because a user deleted the
last record thus its bbox was calculated to be the whole earth resulting
in QGIS server propagating the whole earth as bbox for this project.
Bernhard
Am 14.02.2014 10:34, schrieb Marco Hugentobler:
Hi Andrea, Giovanni
QGIS Server doesn't calculate the bbox itself, but it queries the extent
from the layers. So it can be that certain providers calculate the bbox
(of course only if the layer / capabilities document is not cached).
For a faster startup, having a persistent cache as Giovanni suggested
might help.
Regards,
Marco
On 14.02.2014 10:18, G. Allegri wrote:
I don't understand why the qgis-server eed to calculate always the
bbox.
In the server project windows,
qgis ask for the published bbox.
Why it don't use it as bbox rather than calculate it on every
request ?
Marco, correct me if I'm wrong.
QGIS Server doesn't calculate the BBOX, it parses the layers extents
from the .qgs project and then combine them to obtain the entire BBOX.
The only operation it does is reprojecting the extents to WGS84 to
create the EX_GeographicBoundingBox element.
Anyway, in case the project advertises and extent, the combined extent
won't be calculated, so in your case this phase shouldn't be the
bottleneck...
giovanni
The FastCGI don't help really.
In a publishing environment every few hour the instances are
restated to removed zombi process.
This mean that every few hours the FastCGI are emptied and reloaded.
A fastcgi environment mean to load 20 instances of QGIS-server and
every of them do them own elaboration .
As the bbox calculation for every layer.
GASP.
The start could ask about one hours and more.
Also another problem with the fastcig is that when
I change something on a project I need to restart to Web instances
to dismiss the actual project and reload the new.
So every change in a qgis project need a restart of all proccess
(20 and so on in a fastcgi enviroment) every with a slow bbox
calculation phase.
mmhh...
:/
2014-02-14 9:13 GMT+01:00 G. Allegri <[email protected]
<mailto:[email protected]>>:
2014-02-14 Marco Hugentobler <[email protected]
<mailto:[email protected]>>:
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).
Thanks Marco, you confirmed what I told Andrea.
It would be a good enhancement if caching could be done in a
persitent manner (out of memory). We could consider, in the
future, to use memcache or something similar.
giovanni
_______________________________________________
Qgis-user mailing list
[email protected] <mailto:[email protected]>
http://lists.osgeo.org/mailman/listinfo/qgis-user
--
-----------------
Andrea Peri
. . . . . . . . .
qwerty àèìòù
-----------------
--
Giovanni Allegri
http://about.me/giovanniallegri
Twitter: https://twitter.com/_giohappy_
blog: http://blog.spaziogis.it
GEO+ geomatica in Italia http://bit.ly/GEOplus
--
Dr. Marco Hugentobler
Sourcepole - Linux & Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
[email protected] http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee
__________ Information from ESET Mail Security, version of virus
signature database 9421 (20140213) __________
The message was checked by ESET Mail Security.
http://www.eset.com
_______________________________________________
Qgis-user mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/qgis-user
__________ Information from ESET Mail Security, version of virus signature
database 9421 (20140213) __________
The message was checked by ESET Mail Security.
http://www.eset.com
--
Bernhard Ströbl
Anwendungsbetreuer GIS
Kommunale Immobilien Jena
Am Anger 26
07743 Jena
Tel.: 03641 49- 5190
E-Mail: [email protected]
Internet: www.kij.de
Kommunale Immobilien Jena
Eigenbetrieb der Stadt Jena
Werkleiter: Dr. Götz Blankenburg
__________ Information from ESET Mail Security, version of virus signature
database 9422 (20140214) __________
The message was checked by ESET Mail Security.
http://www.eset.com
_______________________________________________
Qgis-user mailing list
[email protected]
http://lists.osgeo.org/mailman/listinfo/qgis-user
