From owner-freebsd-hackers Fri Jan 22 19:35:10 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id TAA04656 for freebsd-hackers-outgoing; Fri, 22 Jan 1999 19:35:10 -0800 (PST) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from psf.Pinyon.ORG (ppp1-237.presc.dialup.futureone.com [209.250.11.237]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id TAA04647 for ; Fri, 22 Jan 1999 19:35:06 -0800 (PST) (envelope-from rcarter@psf.Pinyon.ORG) Received: from psf.Pinyon.ORG (localhost [127.0.0.1]) by psf.Pinyon.ORG (8.9.2/8.9.2) with ESMTP id UAA18297; Fri, 22 Jan 1999 20:31:38 -0700 (MST) (envelope-from rcarter@psf.Pinyon.ORG) Message-Id: <199901230331.UAA18297@psf.Pinyon.ORG> X-Mailer: exmh version 2.0.2 2/24/98 To: dyson@iquest.net cc: dufault@hda.com (Peter Dufault), dillon@apollo.backplane.com, hackers@FreeBSD.ORG Subject: Re: Error in vm_fault change In-reply-to: Your message of "Fri, 22 Jan 1999 18:54:44 EST." <199901222354.SAA36875@y.dyson.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 22 Jan 1999 20:31:38 -0700 From: "Russell L. Carter" Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG %> As someone interested in realtime I'll toss two requirements at %> you: you should be able to behave as if you have less physical %> memory than you do to permit locked in regions (should be easy), %> and your algorithms should be able to define a maximum amount of %> time (for a specific configuration) that it will take to reduce %> that number, that is, if I give you five seconds warning can you %> guarantee me more two more MB memory? For the second requirement %> don't concern yourself with obvious Unixy issues or anything outside %> the VM subsystem, only that the algorithms in your now well contained %> subsystem are determinate. %> %Your comments about "goals" are correct. The obsolete notion of priority %is specious. No, it isn't. People (or rather organizations) are now using "OSS unix" stuff to do things like control flight and targeting and other interesting stuff. The lingo is based on "priority". Who gives a shit about interactive users ;-). Meeting deadlines is probably orthogonal to system throughput. Russell % %-- %John | Never try to teach a pig to sing, %dyson@iquest.net | it makes one look stupid %jdyson@nc.com | and it irritates the pig. % %To Unsubscribe: send mail to majordomo@FreeBSD.org %with "unsubscribe freebsd-hackers" in the body of the message % To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message