Date: Sat, 03 Nov 2001 12:06:38 +0100 From: "Mikkel C. Simonsen" <mcs@post5.tele.dk> To: questions@FreeBSD.ORG Subject: Re: SMP kernel with 1 processor.... Message-ID: <3BE3CFBE.5CA0@post5.tele.dk> References: <bulk.81588.20011102213336@hub.freebsd.org>
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> Date: Sat, 3 Nov 2001 05:15:54 -0000 > From: "Mark Hughes" <mark@dvdnews.co.uk> > Subject: SMP kernel with 1 processor.... > > I know it sounds strange, but really it isn't that strange... > > So, is it okay to compile a kernel with the following options uncommented, > and will it impact performance at all to do so: > > # To make an SMP kernel, the next two are needed > #options SMP # Symmetric MultiProcessor Kernel > #options APIC_IO # Symmetric (APIC) I/O I have a system running with only one CPU (it supports 4) with the SMP options enabled, and I haven't had any problems with that so far. I don't know whether it affects performance, but if it does I haven't noticed it. > Also, other than these two options, is there anything else that needs to be > enabled/disabled to work with SMP? I don't think so. Best regards, Mikkel C. Simonsen > TIA, > Mark To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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