On Mon, Apr 07, 2008 at 09:35:50PM +0200, [EMAIL PROTECTED] wrote: > The link to OL example Guillaume posted is also the case I wrote about. > Let's try it (http://www.openlayers.org/dev/examples/fullScreen.html). > Please switch off overlay for fair-play and zoom in the map. Then make a > few large circles with map using mouse. Try the same with GM. And don't > try to tell me you have the same feeling (at least in FF 2 and IE7).
Well, I hate to be the bearer of bad news, but on my browser on my computer, they feel about the same. This is backed up, to some extent, by empirical evidence: using a stopwatch, I dragged each map around in circles, clockwise, for 5 seconds, with the Firebug profiler turned on for each. OpenLayers: 944.26ms, 57342 calls Google Maps: 820.147ms, 44818 calls So, it appears that OpenLayers could be said, based on the empirical evidence on my browser, to be about 15% slower than Google Maps: given the limited scope of the specific test here, I would say that's not really a big enough difference to complain about. Interestingly enough, this is apparently a significant change from 2.5: OpenLayers 2.5: 1469.714ms, 138497 calls So, we've gained a 35% performance improvement without even trying. Not bad. > And I've made lot of such tests with same result. > I have absolutely nothing personal against OL, I really like them from > many points of view. I also understand and agree with Christopher when he > talks about freedom of influencing OL code. But if I try to solve that > panning problem I would do so significant change that I would be really > worried about the rest of the code. Well, without understanding what is behaving slowly for you, it's hard for anyone to fix it, but as I said, there is no intention to be slow, and I don't see any serious evidence to indicate that OL is any worse in this case than any other mapping API on my platform of choice. Regards, -- Christopher Schmidt MetaCarta _______________________________________________ Dev mailing list Dev@openlayers.org http://openlayers.org/mailman/listinfo/dev
