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List:       qgis-user
Subject:    Re: [Qgis-user] low CPU on python plugin computation - an explanation ?
From:       Carlos_Cerdán <sig.upagu () gmail ! com>
Date:       2014-10-29 17:39:29
Message-ID: CAFvg7Wg4--0k1K4yPQz+j0E4maRhEjz8RS4HhJ1yjC6E7izN5g () mail ! gmail ! com
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It's useful information, thank you Alain

2014-10-29 11:48 GMT-05:00 Alain Gauthier <alain.gauthier@eaucea.fr>:

> 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
>
>
>
> _______________________________________________
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>

[Attachment #5 (text/html)]

<div dir="ltr">It&#39;s useful information, thank you Alain<br></div><div \
class="gmail_extra"><br><div class="gmail_quote">2014-10-29 11:48 GMT-05:00 Alain \
Gauthier <span dir="ltr">&lt;<a href="mailto:alain.gauthier@eaucea.fr" \
target="_blank">alain.gauthier@eaucea.fr</a>&gt;</span>:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">Hello,<br> I found a workaround to my problem : the \
computation I am performing is<br> done on a layer open from a network file.<br>
So I copied the files on my local computer disk and the computation time<br>
became normal, with a normal CPU usage.<br>
<br>
In order to understand the problem, I had a look to questions on slow<br>
network access trouble with QGIS. I think my problem is related to that<br>
one : <a href="http://hub.qgis.org/issues/6448" \
target="_blank">http://hub.qgis.org/issues/<u></u>6448</a><br> <br>
In fact if I try to perform a simple &quot;spatial query&quot; with Qgis onto a<br>
layer opened for a network file, the computation is very slow and does<br>
not use more than few percents of CPU. The same query done on a layer<br>
opened from a local disk file is normaly performed.<br>
<br>
I hope this could help anyone facing this performance problem.<br>
<br>
Thank you for your attention<br>
Alain Gauthier<br>
<br>
<br>
<br>
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target="_blank">Qgis-user@lists.osgeo.org</a><br> <a \
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target="_blank">http://lists.osgeo.org/<u></u>mailman/listinfo/qgis-user</a><br> \
</blockquote></div><br></div>



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