Re: FW: How to benchmark memory managers?

Calum writes:

> Another point, which I don't know if it is addressed in the 
> measurements.  What about objects allocated on the stack?  Okay, many 
> applications don't allocate significant proportions of objects on the 
> stack, but for those that do, there is a significant performance boost.
> 
> So really one wishes to compare GC vs malloc+stack.  One cannot simply 
> pretend that an application using malloc/new does not use the stack.

True, but one should also note that escape analysis, say used in a JIT
compiler, can often prove that a sufficiently simple use of a
heap-allocated object (say one that is a straightforward translation
of the use of a stack-allocated structure in C++) is in fact
stack-allocatable.

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Dave Detlefs                           http://www.sunlabs.com/people/detlefs/
Sun Microsystems Laboratories                           [email protected]
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