Date: Mon, 12 Aug 1996 13:52:50 -0600 From: Steve Passe <smp@csn.net> To: Lars_Koeller@odie.physik2.uni-rostock.de Cc: questions@freefall.freebsd.org Subject: getting started with FreeBSD SMP Message-ID: <199608121952.NAA13746@clem.systemsix.com>
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Hi, > Where can I find some information (papers,READMES,source) about the > FreeBSD SMP implementation and the final design goals (threaded kernel, > Master CPU, ....). > > Thanks > > Lars First, you need to subscribe to the SMP mailing list: smp@freebsd.org Here are my notes from my experiences getting setup for SMP: =============================================================================== -- [ install the latest 2.2-SNAP ] [ you might also want to sup -current after that ] -- # save the standard src/sys tree: cd /usr/src mv sys sys-UP -- # get a CVS tree of the SMP src/sys: cd /usr/sup [ create an smp-supfile: ] src-sys release=smp host=sup.FreeBSD.org hostbase=/home base=/usr prefix=/usr/local/src/FreeBSD/smp delete old use-rel-suffix sup -v smp-supfile -- # checkout a new (ie, SMP) src/sys tree: cd /usr/src cvs -d /usr/local/src/FreeBSD/smp checkout sys mv sys sys-SMP ln -s sys-SMP sys -- cd /usr/src/sys make all install -- cd /usr/src/sys/i386/conf cp GENERIC SMP [ edit SMP, adding: ] # Symmetrical Multi Processor options SMP options "NCPU=2" config SMP cd ../../compile/SMP make depend; make; make install -- cd / mv kernel.old kernel-UP halt -- # reboot new kernel and start second CPU: sysctl -w kern.smp_active=2 ------------------------------------------------------------------------------- there is a problem syncing disks when 'halt'ing with the 2nd CPU active. I do the following to get around this: cd /sbin mv halt realhalt [ edit a script called /sbin/halt: ] #!/bin/sh sysctl -w kern.smp_active=0 exec /sbin/realhalt =============================================================================== -- Steve Passe | powered by smp@csn.net | FreeBSD -----BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.2 mQCNAzHe7tEAAAEEAM274wAEEdP+grIrV6UtBt54FB5ufifFRA5ujzflrvlF8aoE 04it5BsUPFi3jJLfvOQeydbegexspPXL6kUejYt2OeptHuroIVW5+y2M2naTwqtX WVGeBP6s2q/fPPAS+g+sNZCpVBTbuinKa/C4Q6HJ++M9AyzIq5EuvO0a8Rr9AAUR tBlTdGV2ZSBQYXNzZSA8c21wQGNzbi5uZXQ+ =ds99 -----END PGP PUBLIC KEY BLOCK-----
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