Date: Tue, 13 Apr 2010 22:14:44 +0200 From: Luigi Rizzo <rizzo@iet.unipi.it> To: bf1783@gmail.com 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... Message-ID: <20100413201444.GB47657@onelab2.iet.unipi.it> In-Reply-To: <m2ld873d5be1004131209ue23db446j3427a1352c87a380@mail.gmail.com> References: <m2ld873d5be1004131209ue23db446j3427a1352c87a380@mail.gmail.com>
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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
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