From owner-freebsd-arch@FreeBSD.ORG Sun Jan 11 20:59:25 2004 Return-Path: Delivered-To: freebsd-arch@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3B57016A4CE for ; Sun, 11 Jan 2004 20:59:25 -0800 (PST) Received: from smtp.mho.com (smtp.mho.net [64.58.4.6]) by mx1.FreeBSD.org (Postfix) with SMTP id 05D9A43D39 for ; Sun, 11 Jan 2004 20:59:24 -0800 (PST) (envelope-from scottl@freebsd.org) Received: (qmail 71292 invoked by uid 1002); 12 Jan 2004 04:59:21 -0000 Received: from unknown (HELO freebsd.org) (64.58.1.252) by smtp.mho.net with SMTP; 12 Jan 2004 04:59:21 -0000 Message-ID: <40022941.6030703@freebsd.org> Date: Sun, 11 Jan 2004 21:57:37 -0700 From: Scott Long User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.5) Gecko/20031103 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Jeff Roberson References: <20040111234854.L36463-100000@mail.chesapeake.net> In-Reply-To: <20040111234854.L36463-100000@mail.chesapeake.net> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit cc: arch@freebsd.org Subject: Re: Interrupt API change X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 12 Jan 2004 04:59:25 -0000 Jeff Roberson wrote: > > There are still significant optimizations to be done in interrupt > scheduling. It seems to me that the filter idea is not a good one if we > can make ithread scheduling extremely cheap, which we can. Ideally, it > should just be little more than a stack switch. I'd rather see us put > effort into this than put effort into defeating the goal of a system which > we have not even finished implementing yet. > > Cheers, > Jeff > I completely agree. However, I don't have the knowledge to do these optimizations, so I'm preparing this as a contingency plan. If you, Peter, Bosko, etc, can put your heads together and come up with a prototype in the next few weeks, that would be awesome. Scott