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From: rreiner@yunexus.YorkU.CA (Richard Reiner)
Newsgroups: comp.unix.internals,comp.unix.sysv386
Subject: Re: The performance implications of the ISA bus
Message-ID: <18871@yunexus.YorkU.CA>
Date: 11 Dec 90 15:37:41 GMT
References: <O7Y77DB@xds13.ferranti.com> <PST.90Dec1131440@ack.Stanford.EDU> <PCG.90Dec10182430@odin.cs.aber.ac.uk>
Organization: York U. Computing Services
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Thanks, Piercarlo Grandi, for your clarifying analysis of ISA bus +
disk issues.  I wonder if I could ask you one or two questions.

>just using two ESDI controllers, one per each disk, will give
>tremendous improvements [because of multi-threaded operation]

What about using SCSI equipment?  Do there exist SCSI host adaptors
for the ISA bus which support multi-threaded operation?

And what about track-buffering ESDI controllers?  Would their
advantages go away if they were used in the setup you suggest (since
you claim that one would get effectively near-zero seek times anyway)?

--richard