Date: Mon, 1 Dec 1997 16:25:20 -0500 (EST) From: "John S. Dyson" <toor@dyson.iquest.net> To: nate@mt.sri.com (Nate Williams) Cc: toor@dyson.iquest.net, nate@mt.sri.com, current@FreeBSD.ORG Subject: Re: FYI: usage of new AIO calls Message-ID: <199712012125.QAA04181@dyson.iquest.net> In-Reply-To: <199712012109.OAA12464@mt.sri.com> from Nate Williams at "Dec 1, 97 02:09:10 pm"
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Nate Williams said: > > > What is a VCHR device? You mention it quite a lot in the commit > > > messages, but I have no idea what it is, unless it's like a acronym > > > cross combining VHS and VCR. :) > > > > RAW disk I/O is an example. > > But, what is it? Raw disk I/O is an example of many things unrelated to > VCHR, so telling me an example of something still doesn't tell me what a > VCHR device is. > I am surprised, do you really not know? The AIO/LIO code was primarily included to support optimized database operations, and I/O is often done to raw disks. -- John dyson@freebsd.org jdyson@nc.com
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