Re: Swarm Performance Topics (was Re: Seg fault after 2 days of simulation

[Marcus G. Daniels]

>>>>> "PJ" == Paul Johnson <address@hidden> writes:

PJ> When my apps run slow, and I profile them, I find 50 percent or
PJ> more of the calls are to objc_message_lookup.  Aside from the
PJ> trick of using IMP type variables to cache frequently accessed
PJ> methods, I have no information about how to deal with performance
PJ> issues. 

Caching the function for a dispatched method (the IMP trick), will
eliminate objc_message_lookup overhead.  If you still see it, that means 
other message dispatches are bottlenecks in your model.


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