Date: Fri, 26 Nov 1999 15:47:04 +0100 (CET) From: Konrad Heuer <kheuer@gwdu60.gwdg.de> To: Micke Josefsson <mj@isy.liu.se> Cc: Peter Sidow <psi@munich.sgi.com>, freebsd-questions@FreeBSD.ORG Subject: RE: Multiple=?iso-8859-1?Q?_CPU=B4s?= ? Message-ID: <Pine.BSF.4.05.9911261544090.36460-100000@gwdu60.gwdg.de> In-Reply-To: <XFMail.991126152207.mj@isy.liu.se>
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On Fri, 26 Nov 1999, Micke Josefsson wrote: > On 26-Nov-99 Peter Sidow wrote: > > Hi, > > I am running at home an older version ( 2.2.5 I think ) and know that > > that version is only good for one CPU. > > But does 3.3 support multiple cpu´s? I have a giga motherboard with two > > I 586 and would like to use both > > processors. I looked into the kernel configuration file from the > > handbook but there is still no choice for selecting > > two ore more cpu´s. > > > > Regards and thanks! > First you will need at least version 3.0. > > Look into /usr/src/sys/i386/conf/GENERIC > > there you will find: > > # 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 > > I just uncommented the two first options and recompiled the kernel. At the next > boot both processors came up. > > With the 'top' command you'll have an extra column indicating which CPU is > doing what. > > My motherboard TYAN 1669(?) needed its BIOS updated, but all was easy after > that. Furthermore, after booting the generic single-cpu kernel, you can run `mptable' (in `/usr/sbin') to view some parameters for your board which may be useful for configuring the SMP kernel. Regards // // Konrad Heuer ____ ___ _______ // Gesellschaft für wissenschaftliche / __/______ ___ / _ )/ __/ _ \ // Datenverarbeitung mbH GÖttingen / _// __/ -_) -_) _ |\ \/ // / // Am Faßberg, D-37077 GÖttingen /_/ /_/ \__/\__/____/___/____/ // Deutschland (Germany) ----- The Power to Serve ----- // http://www.freebsd.org // kheuer@gwdu60.gwdg.de // To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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