Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!pasteur!ucbvax!orville.nas.nasa.GOV!rowley
From: rowley@orville.nas.nasa.GOV (Karl Rowley)
Newsgroups: comp.sys.atari.st
Subject: Turbodos and the ideal disk cache
Message-ID: <8804192256.AA06919@orville.nas.nasa.gov>
Date: 19 Apr 88 22:56:06 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
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Does anyone know for sure that Turbodos delays writes to disk?  It seems 
hard to believe that someone with enough knowledge to write Turbodos would
make such a mistake.

How much a delayed write cache would really buy on the ST is a good question.
In a lot of cases it may not buy much over a write-through cache.

The ideal disk caching program for the ST would: (1) provide a write-through
cache, (2) be configurable to grab a user-specified amount of memory at boot
time, (3) use a FIFO algorithm for allocating cache space, (4) allow 
the user to on-the-fly turn caching for any device on or off, and (5) 
interface to the rest of the system through the rwabs() vector.

Such a capability should be a standard part of the ST system software (i.e.
provided by Atari).

				Karl Rowley
				ames!orville.nas.nasa.gov!rowley
				rowley@orville.nas.nasa.gov

"Any opinions expressed are my own."