From owner-freebsd-hackers  Thu Jan 14 20:58:03 1999
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id UAA15834
          for freebsd-hackers-outgoing; Thu, 14 Jan 1999 20:58:03 -0800 (PST)
          (envelope-from owner-freebsd-hackers@FreeBSD.ORG)
Received: from apollo.backplane.com (apollo.backplane.com [209.157.86.2])
          by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id UAA15829
          for <hackers@FreeBSD.ORG>; Thu, 14 Jan 1999 20:58:02 -0800 (PST)
          (envelope-from dillon@apollo.backplane.com)
Received: (from dillon@localhost)
	by apollo.backplane.com (8.9.1/8.9.1) id UAA29086;
	Thu, 14 Jan 1999 20:56:53 -0800 (PST)
	(envelope-from dillon)
Date: Thu, 14 Jan 1999 20:56:53 -0800 (PST)
From: Matthew Dillon <dillon@apollo.backplane.com>
Message-Id: <199901150456.UAA29086@apollo.backplane.com>
To: hackers@FreeBSD.ORG
Subject: Path to SMP
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

    Is anyone currently working on the next big step in the SMP
    puzzle?  That is, implementing kernel threads with preemptive
    scheduling?

    The idea being that one then has the ability to run 
    preemptable kernel threads in parallel on SMP-capable
    boxes because the code must assume preemption in the
    same manner on both uni and multi cpu systems.

    Once implemented, we would begin to migrate functionality
    from non-preemptive threads to preemptive threads from
    the outside-in, and parallel SMP operation in supervisor
    mode migrates along with it.  

					-Matt

					Matthew Dillon 
					<dillon@backplane.com>


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message