From owner-freebsd-questions Fri Feb 3 05:35:30 1995 Return-Path: questions-owner Received: (from root@localhost) by freefall.cdrom.com (8.6.9/8.6.6) id FAA11590 for questions-outgoing; Fri, 3 Feb 1995 05:35:30 -0800 Received: from earth.sarnoff.com (earth.sarnoff.com [130.33.8.176]) by freefall.cdrom.com (8.6.9/8.6.6) with SMTP id FAA11584 for ; Fri, 3 Feb 1995 05:35:29 -0800 Received: from mini.sarnoff.com by earth.sarnoff.com (4.1/SMI-4.1) id AA25799; Fri, 3 Feb 95 08:34:57 EST Received: by mini.sarnoff.com (931110.SGI/930416.SGI) for @earth.sarnoff.com:questions@freebsd.org id AA06457; Fri, 3 Feb 95 07:17:29 -0500 Date: Fri, 3 Feb 1995 07:17:29 +30000 From: Ron Minnich To: questions@FreeBSD.org Subject: Re: Does FreeBSD supports SMP?? In-Reply-To: <199502030009.QAA22881@freefall.cdrom.com> Message-Id: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: questions-owner@FreeBSD.org Precedence: bulk This one came up on netbsd again. You can do crude SMP by simply locking the kernel when a proc enters it. This works ok for 2-4 processors, and works well enough that AIX/370 used it for a few years. Takes about 4KLOCS to implement. ron Ron Minnich |We can think of C++ as the Full Employment Act rminnich@earth.sarnoff.com |for Programmers. After all, with each compiler (609)-734-3120 |version change, you have to rewrite all your code.