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I am not sure I will remember that exactly ... I started with FreeBSD with 5.4 while 5.0 was the first FreeBSD version with SMP support. I recall that I moved

I am not sure I will remember that exactly ... I started with FreeBSD with 5.4 while 5.0 was the first FreeBSD version with SMP support. I recall that I moved to 6.0 quite fast without touching the 5.5. I have a screenshot from 2006/07 with FreeBSD 6.1-STABLE ... so I would suspect that it rather was 6.x series.

flatiron 5y ago
FreeBSD before 6 really wasn’t suitable for smp workloads even claiming to be. Right now as Netflix has shown their smp implementation is easily tweaked for application specific purposes. At least in my dealings there be dragons in Linux smp. When openbsd really moped out of something like HT and is super pokey about stuff I always get a whiff something’s amiss.