From owner-freebsd-hackers Mon Jan 28 4: 1:34 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from iona.dcs.gla.ac.uk (iona.dcs.gla.ac.uk [130.209.240.35]) by hub.freebsd.org (Postfix) with ESMTP id 3C44537B402 for ; Mon, 28 Jan 2002 04:01:30 -0800 (PST) Received: from therese.dcs.gla.ac.uk ([130.209.241.134] helo=therese.dcs.gla.ac.uk.dcs.gla.ac.uk) by iona.dcs.gla.ac.uk with esmtp (Exim 3.13 #1) id 16VATY-00029g-00; Mon, 28 Jan 2002 12:01:28 +0000 Received: by therese.dcs.gla.ac.uk.dcs.gla.ac.uk (8.11.3/Dumb) id g0SC1QE98606; Mon, 28 Jan 2002 12:01:26 GMT To: Lars Eggert Cc: hackers@freebsd.org Subject: Re: priority disk scheduling? References: <3C51C184.1020706@isi.edu> From: Rolf Neugebauer Date: 28 Jan 2002 12:01:25 +0000 In-Reply-To: <3C51C184.1020706@isi.edu> Message-ID: Lines: 18 User-Agent: Gnus/5.0808 (Gnus v5.8.8) Emacs/20.7 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Lars Eggert writes: > Hi, > > does anyone know if a simple priority disk scheduler exists for a > recent (4.X) FreeBSD? I don't need anything fancy, basically the POSIX > rtprio equivalent for disks. > > The Eclipse people (at Bell) have something like that, but it's based > on an older kernel, and I'd rather use something more recent before > looking into porting their stuff. You might want to try anticipatory scheduling from Rice. It is for 4.3-RELEASE and IIRC includes some proportional share algorithms. More info and source code available for non-commercial use: http://www.cs.rice.edu/~ssiyer/r/antsched/ Rolf To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message