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 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 >> actually. I think >> the disksort-routines looked as a good place to do this. Even there it might >> 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 >> don't have >> very good knowledge of the hardware. One can't pass this info from the lower layers up into GEOM (maybe by adding some attribute querying interface in GEOM if it doesn't exist)? Bye, Alexander. -- The naked truth of it is, I have no shirt. -- William Shakespeare, "Love's Labour's Lost" http://www.Leidinger.net Alexander @ Leidinger.net: PGP ID = B0063FE7 http://www.FreeBSD.org netchild @ FreeBSD.org : PGP ID = 72077137home | help
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