Date: Wed, 18 May 2005 22:14:12 +0200 (CEST) From: Sten Spans <sten@blinkenlights.nl> To: Astrodog <astrodog@gmail.com> Cc: freebsd-amd64@freebsd.org Subject: Re: FreeBSD on dual core Opterons - stupid buildworld test Message-ID: <Pine.SOC.4.61.0505182212180.766@tea.blinkenlights.nl> In-Reply-To: <2fd864e05051811442152fa@mail.gmail.com> References: <428B6FC1.3000907@fsn.hu> <1116437340.69035.0.camel@hood.oook.cz> <200505181441.39457.jkim@niksun.com> <2fd864e05051811442152fa@mail.gmail.com>
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On Wed, 18 May 2005, Astrodog wrote: > On 5/18/05, Jung-uk Kim <jkim@niksun.com> wrote: >> >> FYI, Linux says: >> >> http://lxr.linux.no/source/include/asm-x86_64/cpufeature.h#L78 >> http://lxr.linux.no/source/arch/x86_64/kernel/setup.c#L834 >> >> Jung-uk Kim >> > > Opteron reports Hyperthreading, because it tries to take advantage of > the licencing benifit. Keep in mind, HT P4s are counted as a single > CPU for the most part, in a licence. Opteron may not. By acting as > though its a HT processor, it gets that same benifit. And some windows software only uses multiple threads when htt is available ... -- Sten Spans "There is a crack in everything, that's how the light gets in." Leonard Cohen - Anthem
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