From owner-freebsd-geom@FreeBSD.ORG  Tue Apr 13 20:22:38 2010
Return-Path: <owner-freebsd-geom@FreeBSD.ORG>
Delivered-To: freebsd-geom@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id B2E0B1065674;
	Tue, 13 Apr 2010 20:22:38 +0000 (UTC)
	(envelope-from luigi@onelab2.iet.unipi.it)
Received: from onelab2.iet.unipi.it (onelab2.iet.unipi.it [131.114.59.238])
	by mx1.freebsd.org (Postfix) with ESMTP id 747948FC16;
	Tue, 13 Apr 2010 20:22:38 +0000 (UTC)
Received: by onelab2.iet.unipi.it (Postfix, from userid 275)
	id 6266973098; Tue, 13 Apr 2010 22:14:44 +0200 (CEST)
Date: Tue, 13 Apr 2010 22:14:44 +0200
From: Luigi Rizzo <rizzo@iet.unipi.it>
To: bf1783@gmail.com
Message-ID: <20100413201444.GB47657@onelab2.iet.unipi.it>
References: <m2ld873d5be1004131209ue23db446j3427a1352c87a380@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <m2ld873d5be1004131209ue23db446j3427a1352c87a380@mail.gmail.com>
User-Agent: Mutt/1.4.2.3i
Cc: fabio@FreeBSD.org, luigi@FreeBSD.org, freebsd-current@FreeBSD.org,
	freebsd-geom@FreeBSD.org
Subject: Re: svn commit: r206497 - in head: sbin/geom/class
	sbin/geom/class/sched sys/geom/sched sys/modules/geom
	sys/modules/geom/geom_sched sys/modules/geom/geom_sched/gs_sched
	sys/modules/geom/geom_sched/gsc...
X-BeenThere: freebsd-geom@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: GEOM-specific discussions and implementations
	<freebsd-geom.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-geom>,
	<mailto:freebsd-geom-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-geom>
List-Post: <mailto:freebsd-geom@freebsd.org>
List-Help: <mailto:freebsd-geom-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-geom>,
	<mailto:freebsd-geom-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 13 Apr 2010 20:22:38 -0000

On Tue, Apr 13, 2010 at 07:09:50PM +0000, b. f. wrote:
> >Author: luigi
> >Date: Mon Apr 12 16:37:45 2010
> >New Revision: 206497
> >URL: http://svn.freebsd.org/changeset/base/206497
> >
> >Log:
> >  Bring in geom_sched, support for scheduling disk I/O requests
> >  in a device independent manner. Also include an example anticipatory
> >  scheduler, gsched_rr, which gives very nice performance improvements
> >  in presence of competing random access patterns.
> 
> Thank you for bringing this in.  Do you or your collaborators also
> plan to add the BFQ scheduler that was in the earlier separate

sooner or later, yes.

> tarballs?  The numbers at
> 
> http://algo.ing.unimo.it/people/paolo/disk_sched/
> 
> suggest that it worked well in a different context.
> 
> Also, there is a typographical error in the gsched(8) manpage: in the
> EXAMPLES section, "-s" should be "-a" in:
> 
>            # Configure device ad0 to use scheduler 'rr':
>            geom sched insert -s rr ad0

thanks, will fix that

cheers
luigi