Date: Wed, 22 Oct 2003 23:09:58 -0400 From: Gerald Freymann <gerry@interpool.ca> To: mgreene@aci.on.ca Cc: freebsd-questions@freebsd.org Subject: Re: Multiple CPUs...verifying Message-ID: <20031022230958.19ca7558.gerry@interpool.ca> In-Reply-To: <000001c3990d$2c0bc7e0$f6c8a8c0@pepstep> References: <000001c3990d$2c0bc7e0$f6c8a8c0@pepstep>
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On Wed, 22 Oct 2003 22:27:13 -0400 "Marco Greene (Home)" <mgreene@aci.on.ca> wrote: |O|>Does FreeBSD autodetect multiple CPU's or do you specifically have to |O|>configure the kernel and recompile? In my experiences with FreeBSD 4-4.8R, you have to uncomment two lines in the kernel config file. # To make an SMP kernel, the next two are needed options SMP # Symmetric MultiProcessor Kernel options APIC_IO # Symmetric (APIC) I/O and then rebuildworld and kernel. World because there are programs that will compile differently if there are multiple CPU's (at least I think that's right!) Kernel for obvious reason. |O|>outline in the handbook. However, when I try to boot with the new |O|>kernel...it doesn't work. I think you're going to have to give more information than "it doesn't work" if you expect anybody to attempt to offer advice. |O|>Also, how do you verify whether or not both CPUs have been configured |O|>in the kernel...and that they are in fact being used? type: dmesg |more and look through the results. When my dual-cpu loads up, I see where there 2nd CPU is acknowledged. Even doing a 'top' shows me which CPU is in use for each program. =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Scary Gerry -- Senior Systems Manager freymann@scaryg.shacknet.nu -For web-hosting, Perl, PHP & MySql programming see http://www.interpool.ca -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
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