> It seems very weird that my version of fac changes performance
> characteristics on my machine and not yours (OS/hardware dependent?).
> Can you tell your hardware configuration, esp. number of physical and
> logical cores?

It's an early Mac Pro with two dual-core Xeon 5150s, 5gb RAM, Mac OS
10.5 and Java 1.6 (installed through software update). There are four
physical and four logical cores.

One thing I have noticed is that the client VM shows improvements with
four cores over two, but the server VM does not. The client VM is
always slower than the server VM on these tests. The biggest
improvement I've seen with 4 cores over 2 on the server VM is 10%, on
an overclocked Core2 Extreme.

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