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re: CoreData Performance Mystery

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re: CoreData Performance Mystery

Subject: re: CoreData Performance Mystery
From: Ben Trumbull <email@hidden>
Date: Sun, 17 Feb 2008 17:24:38 -0800

This cuts the move time in about half.  So moving 200 books objects
now takes about 1.5 second vs. the 3 - 4 it was previously.  Using
Instruments it appears to me that this 1.5 second period is almost
entirely related to KVO stuff like didChangeValueForKey.  That seems
par for the course given that 200 relationships and inverse
relationships are changing buy I'm still somewhat surprised by how
long this takes?  So I suppose it's more of a KVO performance issue
than a CoreData one.


Mike,

Please please take a Shark sample (with embedded source, at 100us samples) and file a bug with bugreport.apple.com so we can improve things. --

-Ben
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