Re: How to benchmark memory managers?

> the cost of free only equals the cost of explicit memory management if 
> none of the objects ever had shared ownership. Otherwise there is some 
> mechanism being hidden by the oracle that is not being accounted for.

While you are correct that these sharing costs can add substantial
overheads, the Jikes RVM already performs all of the locking and other
work needed to support its multi-threaded design.  Because these
maintained outside of the memory management routines (and were already
included in both sets of numbers), we did not burden the explicit memory
managers with a duplicative analysis to handle sharing of objects.

Matthew Hertz
[email protected]