> Also be aware that just because memory is released, doesn't mean it is > returned to the system (e.g. you will not > see your apps memory usage go down in Activity Monitor). In fact, AFAIK, it > is never returned to the system, > except perhaps in low memory situations.
I don't actually think that's true. At least, it's not what I observe. I think it's more accurate to say that you cannot predict when memory which has been allocated and then freed will be returned to the operating system, nor how much. It happens, I believe, in 4k pages, but probably not one at a time and will be heavily dependent on fragmentation of the process's heap. No doubt there is much more to know. I agree with the sentiment of keeping an eye on your peak memory usage. I use Instruments for this, and it found one instance where memory usage was creeping steadily up when the app was playing audio but otherwise idle. Paul Sanders. _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
