Jordi Carrillo wrote: > I've read that SMP should be disabled for performance issues (I did > not know > that before installing freebsd). I have a P4 3GHz with hyperthreading > technology. I have the SMP-GENERIC kernel and it only launches one > cpu. So, > I've decided to disable SMP from BIOS. Is that ok?, knowing that I have a > Smp enabled kernel? or should I install one without smp? If so, is > there a > way to install one already precompiled? > Thanks in advance > I believe that HTT was disabled in FreeBSD per security report FreeBSD-SA-05:09.htt (http://security.freebsd.org/advisories/FreeBSD-SA-05:09.htt.asc). If you want to enable, I believe you can set the loader.conf option machdep.hlt_logical_cpus to 2.
Having SMP enabled on a uniprocessor box shouldn't give you any stability problems, but SMP does use a different locking mechanism that can affect performance. You will probably get slightly better performance if you run with an SMP-disabled kernel. -- -- Skylar Thompson ([EMAIL PROTECTED]) -- http://www.cs.earlham.edu/~skylar/
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