Date: Tue, 09 Mar 2004 06:06:11 -0600 (CST) From: Conrad Sabatier <conrads@cox.net> To: Justin Dossey <jbd@cagemonkey.com> Cc: freebsd-current@freebsd.org Subject: APIC/SMP on UP? (was Re: Load average with CURRENT) Message-ID: <XFMail.20040309060611.conrads@cox.net> In-Reply-To: <Pine.LNX.4.58.0403071511500.23079@localhost.localdomain>
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On 07-Mar-2004 Justin Dossey wrote: > On Sun, 7 Mar 2004, Andre Guibert de Bruet wrote: >> >> Is this a system with multiple CPUs or a P4 with hyperthreading? It could >> be that you didn't previously have the APIC and SMP (or hyperthreading) >> options enabled in your kernel and now you do... Could you paste the first >> 15 lines of the output of "top -S"? > > It's a single CPU AMD Duron 1.3GHz, with SMP disabled, but APIC > enabled. I've been meaning to ask about this. Is there anything to be gained on a UP box by enabling APIC and/or SMP? I'm running on an Athlon here, with ULE: CPU: AMD Athlon(tm) Processor (998.07-MHz 686-class CPU) Origin = "AuthenticAMD" Id = 0x622 Stepping = 2 Features=0x183f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PA T,PSE36,MMX,FXSR> AMD Features=0xc0400000<AMIE,DSP,3DNow!> -- Conrad Sabatier <conrads@cox.net> - "In Unix veritas"
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