You may also want to have a look at http://ol-performance.appspot.com/, especially trick 5.
Regards, Andreas. On Apr 7, 2011, at 14:50 , David Alda Fernandez de Lezea wrote: > Sarah, > > Thanks for your response. I use it in my app, but I think that in this case > is not useful. The problem occurs, I guess, in the moment of parsing the > features in openlayers.layer.vector so during this task the browser gets > freezed like if it was not responding, after a period of time the browsers > zooms to the data extent and is then when it appears the OpenLayers' loading > panel, but it appears because of the zoom action not because of the procces > of parsing the features. > > Regards, > Un saludo, > > > > ·················································································· > > David Alda Fernández de Lezea > Lurralde eta Biodibertsitate Saila / Dpto. de Territorio y Biodiversidad > > IKT > Granja Modelo s/n · 01192 · Arkaute (Araba) > > ·················································································· > Tlfnos.: 945-00-32-95 Fax: 945-00.32.90 > ·················································································· > email: [email protected] web: www.ikt.es > ·················································································· > > > > De: Sarah Schuessler [mailto:[email protected]] > Enviado el: jueves, 07 de abril de 2011 14:34 > Para: David Alda Fernandez de Lezea; Zac Spitzer; > [email protected] > Asunto: AW: [OpenLayers-Users] Browser slow performance while > parsingOpenLayers.Vector.Feature features > > Hi David, > > if you want to use a loading image you can use > OpenLayers.Control.LoadingPanel (it`s a addon afaik). > I use it because I´m having similar task of yours. > > best regards > Sarah > > Von: David Alda Fernandez de Lezea <[email protected]> > An: Zac Spitzer <[email protected]>; [email protected] > Gesendet: Donnerstag, den 7. April 2011, 14:21:28 Uhr > Betreff: RE: [OpenLayers-Users] Browser slow performance while > parsingOpenLayers.Vector.Feature features > > Zac, > > thanks for your response. I know IE sux, but 95% of our customers have IE6 > installed, and they are not allowed to switch to another version or to get > other browsers. > > I get the polygons from GeoServer from a wfs layer. They are complex polygons > with lots of vertices (parcels from cadastre) and I can't simplify the > features because we are on the task of online editing using wfs-t protocol, > so the edition must be accurate. > > I'm just wondering if there is something that I can show, like a progress bar > or loading image, to tell the user this kind of operations will take a bit, > but I'm afraid is going to be difficult because of the browser program. > > Any idea? > > Regards, > Un saludo, > > > ·················································································· > > David Alda Fernández de Lezea > Lurralde eta Biodibertsitate Saila / Dpto. de Territorio y Biodiversidad > > IKT > Granja Modelo s/n · 01192 · Arkaute (Araba) > > ·················································································· > Tlfnos.: 945-00-32-95 Fax: 945-00.32.90 > ·················································································· > email: [email protected] web: www.ikt.es > ·················································································· > > > > De: [email protected] > [mailto:[email protected]] En nombre de Zac Spitzer > Enviado el: jueves, 07 de abril de 2011 13:33 > Para: [email protected] > Asunto: Re: [OpenLayers-Users] Browser slow performance while > parsingOpenLayers.Vector.Feature features > > short answer, IE just sucks > > long answer, you could switch over to a real mapserver engine > > how dense are your polygons? generalising them might help a bit if they are > very dense > > On Thu, Apr 7, 2011 at 9:29 PM, David Alda Fernandez de Lezea > <[email protected]>wrote: > Hi list, > > I'm having some performance issues with most browsers, but specially with IE > (this is the real problem).I have a vector layer in which once the map is > shown I load from 50 to 100 polygons and I zoom to them. I know that this is > a task it will consume some time, but the problem is that the browser gets > freezed and I would like to improve that in order to improve the user > experience. > > I've tried this in > > FF --> 5-10 seconds > Safari --> 5 seconds > Chrome --> 5 seconds > Opera --> 5 seconds > IE6 --> 60 seconds > IE7 --> 40 seconds > IE8 --> 30 seconds > > Is there something that I can do to improve the browser's response?? > > Thanks. > > Un saludo, > > ·················································································· > > David Alda Fernández de Lezea > Lurralde eta Biodibertsitate Saila / Dpto. de Territorio y Biodiversidad > > IKT > Granja Modelo s/n · 01192 · Arkaute (Araba) > > ·················································································· > Tlfnos.: 945-00-32-95 Fax: 945-00.32.90 > ·················································································· > email: [email protected] web: www.ikt.es > ·················································································· > _______________________________________________ > Users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/openlayers-users > > > > -- > Zac Spitzer > Solution Architect / Director > Ennoble Consultancy Australia > http://www.ennoble.com.au > http://zacster.blogspot.com > +61 405 847 168 > > > > _______________________________________________ > Users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/openlayers-users -- Andreas Hocevar OpenGeo - http://opengeo.org/ Expert service straight from the developers. _______________________________________________ Users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/openlayers-users
