Date: Thu, 16 Dec 2004 13:11:10 +0200 From: Andriy Tkachuk <ant@emict.com> To: freebsd-smp@freebsd.org Subject: doc's inaccuracy? about machdep.hlt_logical_cpus Message-ID: <200412161311.10526.ant@emict.com>
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Hi folks. ant# uname -r 5.3-STABLE man smp ... FreeBSD supports hyperthreading on Intel CPU's on the i386 platform. Since using logical CPUs can cause performance penalties under certain loads, the logical CPUs can be disabled by setting the machdep.hlt_logical_cpus sysctl to one. ^^^^^^^^^^^^^^^^^^^^^^^^ ant# sysctl -a | grep machdep.hlt machdep.hlt_cpus: 0 is this the one that is mentioned in smp(4) ?
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