[Qgis-user] low CPU on python plugin computation - an explanation ?

[Alain Gauthier]

Hello,
I found a workaround to my problem : the computation I am performing is
done on a layer open from a network file.
So I copied the files on my local computer disk and the computation time
became normal, with a normal CPU usage.

In order to understand the problem, I had a look to questions on slow
network access trouble with QGIS. I think my problem is related to that
one : http://hub.qgis.org/issues/6448

In fact if I try to perform a simple "spatial query" with Qgis onto a
layer opened for a network file, the computation is very slow and does
not use more than few percents of CPU. The same query done on a layer
opened from a local disk file is normaly performed.

I hope this could help anyone facing this performance problem.

Thank you for your attention
Alain Gauthier