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<div dir="ltr"><div><div><div><br></div><div>I don't understand why the qgis-server eed to calculate always the bbox.<br>In the server project windows, <br>qgis ask for the published bbox.<br></div><div>Why it don't use it as bbox rather than calculate it on every request ?<br>
</div></div></div></div></blockquote><div><br></div><div>Marco, correct me if I'm wrong.</div><div>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.</div>
<div>The only operation it does is reprojecting the extents to WGS84 to create the EX_GeographicBoundingBox element.</div><div><br></div><div>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...</div>
<div><br></div><div>giovanni</div><div><br></div><div><br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div dir="ltr"><div><div><div>
<br></div><div>The FastCGI don't help really.<br>In a publishing environment every few hour the instances are restated to removed zombi process.<br>This mean that every few hours the FastCGI are emptied and reloaded.<br>
A fastcgi environment mean to load 20 instances of QGIS-server and every of them do them own elaboration .<br>As the bbox calculation for every layer.<br><br>GASP.<br>The start could ask about one hours and more.<br></div>
<br></div>Also another problem with the fastcig is that when <br></div><div>I change something on a project I need to restart to Web instances to dismiss the actual project and reload the new.<br><br></div><div>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.<br>
<br></div><div>mmhh...<br><br></div><div>:/<br></div><div><br></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">2014-02-14 9:13 GMT+01:00 G. Allegri <span dir="ltr"><<a href="mailto:giohappy@gmail.com" target="_blank">giohappy@gmail.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div><div class="h5"><div dir="ltr"><br><div class="gmail_extra">
<br><br><div class="gmail_quote">2014-02-14 Marco Hugentobler <span dir="ltr"><<a href="mailto:marco.hugentobler@sourcepole.ch" target="_blank">marco.hugentobler@sourcepole.ch</a>></span>:<div>
<br>
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<div>Hi Andrea<div><br>
<br>
>I suspect that QS try always to recalc the box of every layer.<br>
<br></div>
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).<div><br></div></div></div></blockquote><div><br></div></div><div>Thanks Marco, you confirmed what I told Andrea.</div><div>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.</div>
<div><br></div><div>giovanni</div></div>
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Andrea Peri<br>. . . . . . . . . <br>
qwerty אטלעש<br>-----------------<br>
</div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br><div dir="ltr">Giovanni Allegri<br><a href="http://about.me/giovanniallegri" target="_blank">http://about.me/giovanniallegri</a><div>Twitter: <a href="https://twitter.com/_giohappy_" target="_blank">https://twitter.com/_giohappy_</a></div>
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