Date: Sat, 25 May 2002 18:29:53 -0700 From: Paul Saab <ps@mu.org> To: John Polstra <jdp@polstra.com> Cc: smp@freebsd.org, bright@mu.org Subject: Re: hyperthreading: myth or legend? (was Re: hyperthreading? (was Re: question)) Message-ID: <20020526012953.GA51786@elvis.mu.org> In-Reply-To: <200205260023.g4Q0N7Q31590@vashon.polstra.com> References: <20020514222840.GB1585@elvis.mu.org> <Pine.GHP.4.21.0205220940410.28331-100000@hpux38.dc.engr.scu.edu> <20020522172759.GV54960@elvis.mu.org> <200205260023.g4Q0N7Q31590@vashon.polstra.com>
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John Polstra (jdp@polstra.com) wrote: > FWIW, my experience has been different. Yesterday I tried both the > latest -current and 4.5-RELEASE on a Dell 2650, and both kernels > failed to probe the extra processor cores. My colleagues who have > been working with the system told me that XP does detect them. Maybe > XP stands for Xtra Processors? ;-) > > Under FreeBSD I ran the "mptable" command, and it lists only one CPU > per physical processor module. So at least for this particular BIOS, > the kernel would have to Just Know that each processor has 2 cores in > order to utilize them. You have to start the other cores. Peter has more info on how to do this. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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