From owner-freebsd-questions Thu May 24 1: 9: 7 2001 Delivered-To: freebsd-questions@freebsd.org Received: from mail.freebsd-corp-net-guide.com (mail.freebsd-corp-net-guide.com [206.29.169.15]) by hub.freebsd.org (Postfix) with ESMTP id CB9E137B424; Thu, 24 May 2001 01:09:03 -0700 (PDT) (envelope-from tedm@toybox.placo.com) Received: from tedm.placo.com (nat-rtr.freebsd-corp-net-guide.com [206.29.168.154]) by mail.freebsd-corp-net-guide.com (8.11.1/8.11.1) with SMTP id f4O88vk77559; Thu, 24 May 2001 01:08:58 -0700 (PDT) (envelope-from tedm@toybox.placo.com) From: "Ted Mittelstaedt" To: "Matthew Emmerton" , "David S. Geirsson" , "Greg Lehey" Cc: Subject: RE: SMP question Date: Thu, 24 May 2001 01:08:56 -0700 Message-ID: <002101c0e428$c7ed0d00$1401a8c0@tedm.placo.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 In-Reply-To: <00b701c0e406$88c480d0$1200a8c0@gsicomp.on.ca> X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3155.0 Importance: Normal Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG I feel compelled to point out that commercial OS implementations have other reasons for implementing things than a clearly defined technical need - such as more features to add to marketing sheets. To paraphrase poor Papa Freud as someone here already did, sometimes a solution looking for a problem is just a solution looking for a problem! ;-) Ted Mittelstaedt tedm@toybox.placo.com Author of: The FreeBSD Corporate Networker's Guide Book website: http://www.freebsd-corp-net-guide.com >-----Original Message----- >From: owner-freebsd-questions@FreeBSD.ORG >[mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Matthew >Emmerton >Sent: Wednesday, May 23, 2001 9:04 PM >To: David S. Geirsson; Greg Lehey >Cc: freebsd-questions@FreeBSD.ORG >Subject: Re: SMP question > > >Just for sake of comparison, there exist other UNIX operating systems that >let you bind multiple processes (or process groups) to certain processors. >Obviously it's been a feature that's deemed worthy of implementation by >those companies who profit from making OS products. Would this be >something >that we (as in the FreeBSD project, not just the people in this thread) >should consider implementing? >-- >Matt > >> Well, for example if I would want a process to run with minimal >interruption >> from other processes, I would like to be able to run it on one processor, >> then just run everything else on the other one. Then again, I suppose it >> would get plenty of CPU by changing its nice level. >> >> On Wed, May 23, 2001 at 09:37:39AM +0930, Greg Lehey wrote: >> > On Tuesday, 22 May 2001 at 12:55:44 +0000, David S. Geirsson wrote: >> > > I don't have an SMP system, but I might buy one in the near future. I >just >> > > have one question, having never used SMP: Can I specify which CPU a >process >> > > runs on? I.E., I want to start process X, and it should run >on CPU #0, >but >> > > process Y should run on CPU #1. Is this possible? How? >> > >> > No. The scheduler chooses which CPU to run processes on. In the >> > course of execution they will probably run on all processors. Why >> > would you want to outguess the scheduler? >> > >> > Greg >> > -- >> > When replying to this message, please copy the original recipients. >> > If you don't, I may ignore the reply. >> > For more information, see http://www.lemis.com/questions.html >> > Finger grog@FreeBSD.org for PGP public key >> > See complete headers for address and phone numbers >> >> -- >> Davíð Steinn Geirsson >> andmann@andmann.eu.org >> (354)-8696608 >> >> "Support staff hung over, Send aspirin and come back LATER." >> >> To Unsubscribe: send mail to majordomo@FreeBSD.org >> with "unsubscribe freebsd-questions" in the body of the message >> > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message