Re: CoreData Performance Mystery

FROM : Jens Alfke
DATE : Sat Feb 16 17:51:34 2008

On 15 Feb '08, at 8:26 PM, Mike McNamara wrote:

> That above while loop appears to take nearly 1 second per 50 book 
> objects.  ???


Any time something is too slow, my first response is to sample the 
app. You can use Activity Monitor to do this, or just type "sample 
MyAppName 2" in a shell. Even if most of the time is spent in some 
system framework, the symbol names are usually clues about what's 
going on.

You can also use Shark if you want to get into more serious profiling, 
but sampling is really quick and usually helpful.

—Jens_______________________________________________

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