Date: Fri, 15 Jan 1999 05:45:42 -0500 (EST) From: Peter Dufault <dufault@hda.com> To: dillon@apollo.backplane.com (Matthew Dillon) Cc: hackers@FreeBSD.ORG Subject: Re: Path to SMP Message-ID: <199901151045.FAA27916@hda.hda.com> In-Reply-To: <199901150456.UAA29086@apollo.backplane.com> from Matthew Dillon at "Jan 14, 99 08:56:53 pm"
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> 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. No, but I'm working on something easier - per-"cpu resource" scheduling classes to dedicate cycles to a class of processes, along with detection and notification when rules are violated. I don't have an SMP system though. Peter -- Peter Dufault (dufault@hda.com) Realtime development, Machine control, HD Associates, Inc. Safety critical systems, Agency approval To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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