Date: Wed, 22 May 2002 10:27:59 -0700 From: Alfred Perlstein <bright@mu.org> To: "Dorr H. Clark" <dclark@applmath.scu.edu> Cc: freebsd-smp@FreeBSD.ORG Subject: Re: hyperthreading: myth or legend? (was Re: hyperthreading? (was Re: question)) Message-ID: <20020522172759.GV54960@elvis.mu.org> In-Reply-To: <Pine.GHP.4.21.0205220940410.28331-100000@hpux38.dc.engr.scu.edu> References: <20020514222840.GB1585@elvis.mu.org> <Pine.GHP.4.21.0205220940410.28331-100000@hpux38.dc.engr.scu.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
* Dorr H. Clark <dclark@applmath.scu.edu> [020522 09:58] wrote: > > I don't have access to a fancy Xeon, I just have > a PIII dual-banger, so I'm relying on the list traffic. > To summarize the past two months: > > On Thu, 14 Mar 2002, John Baldwin wrote: > > On Thu, 14 Mar 2002, Terry Lambert wrote: > > On Tue, 23 Apr 2002, FiberOps wrote: > > On Tue, 23 Apr 2002, John Baldwin wrote: > > On 23-Apr-2002 FiberOps wrote: > > This final message was not followed up except by me, > although someone else informed me that while the CPUs > launch, FreeBSD can't run processes on them. > > So I thought I'd try to stir up an answer to the original question: > > For the latest Xeon motherboards, does FreeBSD 4.x stable > support hyperthreading? If not, does the current TOT? > If not, why not? Is gcc an issue or not? If gcc is an issue, > would this be an obstacle for all gcc-based OSes, > not just FreeBSD, most prominently among these Linux? > > Clear answers gratefully appreciated, I'm glad you chose to take the word of a couple of people that have never used a hyperthreading board above what I've already told you. Here's what I know: The additional CPUs probe. A benchmarking utility reports equivelant performance to a 4 way machine. -- -Alfred Perlstein [alfred@freebsd.org] 'Instead of asking why a piece of software is using "1970s technology," start asking why software is ignoring 30 years of accumulated wisdom.' Tax deductible donations for FreeBSD: http://www.freebsdfoundation.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020522172759.GV54960>