Date: Mon, 13 Mar 2006 15:16:15 +0000 From: Pete French <petefrench@ticketswitch.com> To: wmoran@collaborativefusion.com Cc: bseklecki@collaborativefusion.com, freebsd-amd64@freebsd.org Subject: Re: How is hyperthreading handled on amd64? Message-ID: <E1FIomN-00015b-4x@dilbert.firstcallgroup.co.uk> In-Reply-To: <20060313094356.d7f0988a.wmoran@collaborativefusion.com>
next in thread | previous in thread | raw e-mail | index | archive | help
> I don't see this behaviour on i386 - my desktop, for example uses only > CPU 0 if the sysctl is 0, and switches between 0 and 1 when the sysctl > is 1. Uh, a typo on my part - substitute *machine* for *kernel*. Sorry! A machine with one physical processor works fine - ccan enable and disable hyperthreading as pper the manual. A machine with two physical processors always gets hyperthreading enabled though. All of these machines are running 6.0 currently - though I will verify that the bug is still there on 6.1 when I get a moment to do an update on them. -pete.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?E1FIomN-00015b-4x>