[OpenLayers-Dev] OpenLayers performance

[Volker Mische]

Hi,

I made a patch once that doesn't trigger on every mouse move but on 
every n-th move. You can find it there: 
http://openlayers.org/pipermail/dev/2007-July/001124.html

Cu,
   Volker

Tomas Novotny wrote:
> Hi,
> 
> I'm after few months of using OpenLayers (OL). I've built some 
> application on OL and appreciated it's architecture for good extensibility.
> But when things come to performance of such common task as panning 
> (moving a map with mouse), I am really dissatisfied.
> The way the panning is implemented is everything but not 
> browser-friendly. There is coord2pixel and pixel2coord processing on 
> several places in those moveTo() and setCenter() methods on every mouse 
> move and it is only part of the problem. A tried to prune OL for tests 
> to just moving map div with one empty layer and things were still the 
> same. You can feel lags as you are moving map from side to side, up and 
> down. When you try to compare it with ie. GoogleMaps you can really feel 
> the difference.
> I haven't seen any OL example with better feeling so I think it's a 
> matter of source architecture, not bug.
> What I'm trying to say? I found out that OL are good for building robust 
> applications where wide functionality is the goal, not the performance. 
> If I'm not right and making something wrong please tell me.
> 
> 
> Regards,
> 
> Tomas Novotny
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