http://lambda-the-ultimate.org/node/4825
They conclude that the heap organization and resulting cache misses account for at least 10% throughput degradation of refcounting GCs compared to tracing.
Sandro On 11/10/2013 12:26 PM, Jonathan S. Shapiro wrote:
Yes. The Berger paper is very helpful. I also found some measurements of L1 cache misses (which are a good approximation to overall overhead) in a size-fitting allocator.The original impetus for my question was the astonishing overhead of reference counting. But my surprise was misplaced. The right question is the /relative/ overhead of RC when compared to malloc/free. Surprisingly, they are very close.Jonathan _______________________________________________ bitc-dev mailing list [email protected] http://www.coyotos.org/mailman/listinfo/bitc-dev
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