Date: Sun, 23 Apr 2000 02:48:05 +0100 From: "Andy Coates" <andy@friends-tv.net> To: "Greg Lehey" <grog@lemis.com> Cc: <freebsd-questions@FreeBSD.ORG> Subject: Re: Dual Processors Message-ID: <022f01bfacc5$f9d11ff0$0100a8c0@blade> References: <017701bfac70$2152eaa0$0100a8c0@blade> <20000423105631.E4675@freebie.lemis.com>
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----- Original Message ----- From: "Greg Lehey" <grog@lemis.com> To: "Andy Coates" <andy@friends-tv.net> Cc: <freebsd-questions@FreeBSD.ORG> Sent: Sunday, April 23, 2000 2:26 AM Subject: Re: Dual Processors > On Saturday, 22 April 2000 at 16:33:34 +0100, Andy Coates wrote: > > Hi, > > > > I currently have a Abit BP6 motherboard with 2 celeron 466's. I'm not sure > > how to make FreeBSD make use of both these processors, can anyone give me a > > point in the right direction as to where I should be looking? > > > > I added SMP options in the kernel config, but I wasn't too sure what to use > > so I left the defaults in: > > # To make an SMP kernel, the next two are needed > > options SMP # Symmetric MultiProcessor Kernel > > options APIC_IO # Symmetric (APIC) I/O > > # Optionally these may need tweaked, (defaults shown): > > options NCPU=2 # number of CPUs > > options NBUS=4 # number of busses > > options NAPIC=1 # number of IO APICs > > options NINTR=24 # number of INTs > > > > Would that be okay? And how can I test that I am using both processors? I > > tried running a CPU intensive program and the load average never went over > > 1, which I thought would reach 2 if 2 processors were in use. > > If you run one CPU intensive program, it will run in one CPU. You > need at least two to use both CPUs. Take a look at dmesg. You should > see: > > SMP: AP CPU #1 Launched! Yep, its there. I did actually see that message on bootup, and first impression was that only #1 CPU had been started or something, and wondered where #2 was :-) Thanks for clearing it up. Now I rest in the knowledge my box is running at its fastest :-) Andy. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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