Date: Fri, 14 Mar 2003 11:19:01 -0500 (EST) From: John Baldwin <jhb@FreeBSD.org> To: Nicolas Kowalski <Nicolas.Kowalski@imag.fr> Cc: freebsd-smp@FreeBSD.org Subject: Re: SMP and Hyperthreading Info Message-ID: <XFMail.20030314111901.jhb@FreeBSD.org> In-Reply-To: <vqollziz29d.fsf@imag.fr>
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On 14-Mar-2003 Nicolas Kowalski wrote: > John Baldwin <jhb@FreeBSD.ORG> writes: > >> Right now we just spin up the logical CPU's as if they were extra CPUs. >> There isn't any special treatment in the schedule for logical CPUs. > > Just a question : is there a way (kernel option ?) to disable > Hyperthreading, so that FreeBSD only uses two physical CPUs ? It is an option on current. I need to backport it so that it will be a kernel option on 4.8 as well. > I am running FreeBSD 4.8-RC on a Compaq ML370 dual-Xeon, and disabling > HT in the BIOS has no effect. > > Thanks in advance. > > -- > Nicolas > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-smp" in the body of the message -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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