On Sep 5, 2009, at 7:34 AM, Rob Keniger wrote:


On 04/09/2009, at 12:43 PM, Rob Keniger wrote:

I'm interested to know if anyone else has been bitten by what seems to be a fairly serious performance regression bug in 10.6 with NSArrayController/NSTreeController.

Basically, if you have an NSArrayController with more than a few bindings, changing selection in the controller takes at least an order of magnitude more time than in Leopard.

I added a benchmark to my sample project to loop through the array controller, selecting each object in turn:
Has no-one else experienced these slowdowns?

It's happening here too.
No workaround found yet...

Andrea

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