I have a dual Xeon system, for which I had hyperthreading enabled. I
was running a CPU intensive floating point program (specifically using
the fftw3 port with threads). I found that using 4 (hyper) processors
really did give me a speed advantage, even though I do find web sites
that suggested this advantage was minimal. (So for example, 4 processes
on this system seemed to run at the equivalent of 2GHz on these 3GHz
computers, so the advantage was about 1.3 times.)
But then after about a day the computer had a panic. I found that 4
CPU's under FreeBSD 5.3 is apparently unstable, and there were
statements to the effect that this would be fixed in FreeBSD 5.4. Is
this going to happen? I am currently running a rather recent version of
FreeBSD 5.3-Stable, maybe a week or two old, so I am concerned that
maybe this won't get committed.
Thanks, Stephen
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