Hello all, I'm testing out FreeBSD 6.0R on a Dual Xeon. I want to do some benchmarking of hyperthreading before I put this machine into use, so I am trying to turn off the HLTing of logical cpu's.
A stock "SMP" kernel without any options gives the following sysctl's on this machine: machdep.hlt_cpus: 10 machdep.hlt_logical_cpus: 0 machdep.logical_cpus_mask: 10 So even though I have hlt_logical_cpus at 0, the kernel seems to have decided to HLT my cpu's 8 and 2, the 'logical' threads on each Xeon I assume. I've tried to get around this by setting the following: test# cat /boot/loader.conf machdep.hlt_cpus=0 machdep.hlt_logical_cpus=0 But still after booting I get the same result with the cpu's HLTed. I'm not sure if using them for user processes actually helps, but I'd like to experiment with the setting. Any ideas how I should accomplish this? Cheers! Walter Hop Transip BV -- Transip BV | http://www.transip.nl/ Hoogwaardige Innovatie | Aangename Zekerheid _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"