Date: Sun, 27 Apr 1997 23:03:38 -0400 (EDT) From: Chuck Robey <chuckr@mat.net> To: Ben Black <black@zen.cypher.net> Cc: FreeBSD-SMP@FreeBSD.org Subject: Re: SMP Message-ID: <Pine.BSF.3.91.970427230130.22821G-100000@Journey2.mat.net> In-Reply-To: <Pine.LNX.3.91.970427225228.32065M-100000@zen.cypher.net>
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On Sun, 27 Apr 1997, Ben Black wrote: > freebsd-smp is not the best example of how to do SMP. it uses the > simplest method: one giant kernel lock. i don't know that it is > particularly representative of advanced SMP operating systems (though > linux also uses a giant kernel lock). One per CPU? One lock total? How many copies of the kernel are running at once? How is caching handled, per cpu, or globally (forcing the two cpu's to look like one?) When a system call executes, what handles it, one cpu? ----------------------------+----------------------------------------------- Chuck Robey | Interests include any kind of voice or data chuckr@eng.umd.edu | communications topic, C programming, and Unix. 9120 Edmonston Ct #302 | Greenbelt, MD 20770 | I run Journey2 and picnic, both FreeBSD (301) 220-2114 | version 3.0 current -- and great FUN! ----------------------------+-----------------------------------------------
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