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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