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From: cc1@locus.ucla.edu (Michael Gersten)
Newsgroups: net.micro.amiga
Subject: Re: Disk Buffering
Message-ID: <1928@curly.ucla-cs.ARPA>
Date: Fri, 3-Oct-86 17:07:50 EDT
Article-I.D.: curly.1928
Posted: Fri Oct  3 17:07:50 1986
Date-Received: Mon, 6-Oct-86 18:40:33 EDT
References: <8610020745.AA09153@cory.Berkeley.EDU>
Reply-To: occ4mgk@oac.ucla.edu, cc1@LOCUS.UCLA.EDU (Michael Gersten)
Organization: Ucla Computer Club (disclaimer)
Lines: 13

This is something that I reported to Amiga a while ago. The problem is that
the system does no read ahead--the hardware requires that an entire track
be read in, but it then only buffers the one sector that you asked for, and
discards the other 10.
 
Note that the actaul track is not discarded until another track is read, but
that usually is very fast. I'd really like to be able to set the buffers to 40,
and have all 11 put into the buffers, and re-use the buffers on a LRU
scheme, sharing all 40 among ALL drives, not 40 for each drive.
		Well, commodore? Can we expect this is 1.3?
			Michael Gersten
      Views expressed here may not be those of the Computer Club, UCLA, or
  anyone in their left OR right mind.  And that's the name o' that tune.