[OpenLayers-Dev] Performance problems in changeset [2867]

[James Stembridge]

Hi,
 
While improving things in relation to memory usage changeset [2867]
seems to have introduced a pretty unacceptable decline in performance.
I'm finding that removing ~400 markers from a layer takes ~4s, with the
vast proportion of the time spent in Event.stopObserving.
 
I have attached (I can't seem to do this in trac) a patch that improves
the efficiency of the observer cache with respect to removals, while not
perfect this drops the time taken to remove ~400 markers to a more
respectable 500ms.
 
Regards,
James.


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