Ken Wakita wrote:
> 
> A circumstance where reference counting outperforms modern trace-based
> collectors is where memory access cost is much higher than the
> conventional memory system and thus memory access required for tracing
> is much higher than the cost for counter maintenance.  One such example
> is distributed environment.  Another maybe systems with very, very slow
> memory such as file systems, persistent object systems, and PDAs.  I am
> curious if there are other circumstances using conventional memory
> system where reference counting is faster.

I don't know how a trace-based collector works. Can you explain?
[Does this have something to do with a write barrier on pointer
stores?]


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