On Oct 18, 2010, at 8:42 AM, Matt Gough wrote: > Perhaps Apple should aim Instruments at itself. Inspired by Bill's post, I > just did a HeapShot test on my own app. Instruments went up to 2.5GB real Mem > and stayed at that when I closed the Instrument window.
"2.5GB Real Mem" is relatively meaningless. Furthermore, it is quite reasonable for it to not drop after you close all windows as the system isn't going to spend the cycles reaping memory unless there is demand for it. Activity Monitor -- assuming that is where you got the "Real Mem" number -- is pretty much entirely useless for doing any kind of performance testing beyond monitoring for the most basic symptom of a problem. If you see the "Real Mem" of an application climbing over time, that is a bad sign. Maybe. Beyond that, the number isn't useful. 'top' tends to be a much better tool for detecting such symptoms. Open a Terminal window and issue the command "top -u -o pid". It display something akin to Activity Monitor, but with the numbers broken down a bit more and a more detailed systemic summary. It also uses less resources than AM in that it doesn't try to draw a picture. b.bum _______________________________________________ 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
