Date: Thu, 05 Jan 2006 09:47:35 -0800 From: Colin Percival <cperciva@freebsd.org> To: Walter Hop <freebsd@walter.transip.nl> Cc: freebsd-questions@freebsd.org Subject: Re: Kernel forces machdep.hlt_cpus, how to change? Message-ID: <43BD5BB7.9050508@freebsd.org> In-Reply-To: <60578543.20060105183452@lifeforms.nl> References: <60578543.20060105183452@lifeforms.nl>
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Walter Hop wrote: > 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. Read FreeBSD-SA-05:09.htt : ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-05:09.htt.asc and then, if you don't have any local untrusted users, consider setting machdep.hyperthreading_allowed=1 in /boot/loader.conf. Colin Percival
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