Date: Fri, 28 Jun 2002 14:52:15 -0700 (PDT) From: John David Duncan <jdd@greatschools.net> To: freebsd-smp@freebsd.org, <freebsd-stable@freebsd.org> Subject: 2 xeons = 4 CPUs? Message-ID: <Pine.OSX.4.44.0206281443230.379-100000@dh8.office.greatschools.net>
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Hey, I just installed 4.6-RELEASE on a dual 1.8Mhz Xeon + Tyan S2720 motherboard (a Relion 140 server from Penguin Computing, actually). When I reboot with an SMP kernel, I see: CPU: Pentium 4 (2199.76-Mhz 686-class CPU) CPU: Pentium 4 (2199.76-Mhz 686-class CPU) CPU: Pentium 4 (2199.76-Mhz 686-class CPU) CPU: Pentium 4 (2199.76-Mhz 686-class CPU) SMP: AP CPU #1 Launched! SMP: AP CPU #2 Launched! SMP: AP CPU #3 Launched! That's twice as many CPUs as I think I have, each going 400Mhz faster. Is this safe? Correct? Is it that hyperthreading stuff? Should I disable it? Thanks - JD To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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