Date: Tue, 13 Apr 2010 19:09:50 +0000 From: "b. f." <bf1783@googlemail.com> To: freebsd-current@FreeBSD.org Cc: luigi@FreeBSD.org, fabio@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: <m2ld873d5be1004131209ue23db446j3427a1352c87a380@mail.gmail.com>
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>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 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 Regards, b.
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