On Oct 8, 2009, at 7:29 AM, Gabriel Zachmann wrote:
It seems that about 20% of the time is spent in the Garbage
Collector thread!
Which is a bit surprising to me, since I don't allocate a large
number of objects (I think) -- just a small number of large objects
(the images).
The collector only chews CPU when there are lots of allocation events
(and, hopefully, deallocation events) that are causing the collector
to believe it needs to do work. Or when something is triggering the
collector manually really often.
Have a look at ObjectAlloc & ObjectGraph in Instruments. That should
give you an idea if there are lots and lots of allocation events
occurring and, if so, what they are. From there, it is a matter of
minimizing the number of allocations occurring.
b.bum
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