I remember reading a number of articles on Jeremy Zawodny's website regarding FreeBSD and Linux performance as it relates to MySQL. At the time of publication, it seemed that Linux's native thread library had quite an advantage over FreeBSD's (but FreeBSD included LinuxThreads support, so that's really a null point) but FreeBSD was vastly superior when it came to swap usage.
Given that we now have FreeBSD 5.2 with ULE scheduler, KSE, improved FS options, ATAng, better SMP support along with many other very impressive scalability improvements, and that Linux kernel 2.6 has NPTL, Ingo Molnar's O(1) scheduler, two excellent disk schedulers (one of which has had an equivalent in FreeBSD for years) along with various other improvements, does anyone have anything to say on the issue?
From my perspective, it seems that the two combatants are really approaching parity in features designed to help scalability. Both OSes now have best-of-breed technology all through their kernels and are both about ready for prime-time (with this humble Linux user betting that FreeBSD 5.3 will be ready and declared STABLE well before kernel 2.6 is widely adopted).
Regards,
Chris
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