On Thu, Aug 10, 2006 at 06:08:00AM +0000, Duane Hill wrote: > > I know this was asked once before. I can't recall if it had received a > response or not. If so, tell me to go digging. > > Otherwise, I have a server that is a dual Zeon 2.8 and I have the > hyperthreading enabled within the bios. When I use top, it shows one of > the CPU's as apparently not being used. Why is this? > > 13 root 171 52 0K 8K CPU1 0 0:00 99.85% idle: cpu1 <-- This one > 11 root 171 52 0K 8K RUN 3 383.1H 61.38% idle: cpu3 > 14 root 171 52 0K 8K RUN 0 403.4H 61.13% idle: cpu0 > 12 root 171 52 0K 8K RUN 2 333.4H 49.95% idle: cpu2
Hyperthreading is not enabled in FreeBSD (it's off by default)? On some systems the sysctl for disabling HTT doesn't actually work properly and leaves some of the logical CPUs active. Kris
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