Date: Fri, 12 Oct 2007 08:18:35 +0200 From: Alexander Leidinger <Alexander@Leidinger.net> To: Fabio Checconi <fabio@freebsd.org> Cc: hackers@freebsd.org, Ulf Lilleengen <lulf@stud.ntnu.no> Subject: Re: Pluggable Disk Scheduler Project Message-ID: <20071012081835.dtrpaz2c0880oow4@webmail.leidinger.net> In-Reply-To: <20071011114828.GE18725@gandalf.sssup.it> References: <20071011022001.GC13480@gandalf.sssup.it> <20071011080734.GA20897@stud.ntnu.no> <20071011114828.GE18725@gandalf.sssup.it>
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Quoting Fabio Checconi <fabio@freebsd.org> (from Thu, 11 Oct 2007 =20 13:48:28 +0200): >> From: Ulf Lilleengen <lulf@stud.ntnu.no> >> Date: Thu, Oct 11, 2007 10:07:34AM +0200 >> >> On tor, okt 11, 2007 at 04:20:01 +0200, Fabio Checconi wrote: >> > o What can be an interface for disk schedulers? >> I think the interface developed in [1] is a pretty good one =20 >> actually. I think >> the disksort-routines looked as a good place to do this. Even there it mi= ght >> not know enough about the hardware. >> >> > o How to deal with devices that handle multiple request per time? >> This is an example of the problems you get doing this in GEOM. You =20 >> don't have >> very good knowledge of the hardware. One can't pass this info from the lower layers up into GEOM (maybe by =20 adding some attribute querying interface in GEOM if it doesn't exist)? Bye, Alexander. --=20 The naked truth of it is, I have no shirt. =09=09-- William Shakespeare, "Love's Labour's Lost" http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID =3D B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID =3D 72077137
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