Xref: utzoo comp.unix.xenix:1721 comp.unix.microport:284
Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!lll-tis!ames!nrl-cmf!mailrus!tut.cis.ohio-state.edu!ut-sally!utah-cs!utah-gr!uplherc!sp7040!wsccs!terry
From: terry@wsccs.UUCP (terry)
Newsgroups: comp.unix.xenix,comp.unix.microport
Subject: Re: Simple disk performance test.
Message-ID: <327@wsccs.UUCP>
Date: 16 Mar 88 08:00:52 GMT
References: <579@tapa.UUCP>
Lines: 33
Summary: You made it look too good, so I have to flame you

In article <579@tapa.UUCP>, larry@tapa.UUCP (Larry Pajakowski) writes:
> We just got a Compaq-386/20 with the Compaq 130mb. disk.
                ^^^^^^^^^^^^^
> All the factors (1:1 interleave, ESDI, 20mhz. processor, fast seek times)
> really add up to impresive performance.  This generally agrees with the
> overall feel of the machine.

	There are a great number of complaints I have with the 386/20, most
of which stem from the use of standard AT-style bus (Edge-triggered) hardware.

Before I get flamed, let me point out that I am not trying to brow-beat you
into a PS/2-80 or anything.

IBM did one thing right: They went level-triggered.  This is _not_ better
because it is faster (it isn't), it is better because it allows you to add
boards with a slower-than-20-meg onboard clock and still have them work.

Anybody who tries to hook up an intellicom or computone board to a 386/20
running Xenix (any version that'll run on the '20) can tell you horror
stories.  No, I am not talking about the "phantom math processor"; that was
fixed in 2.2.2 rev k.

There are some basic design incompatabilities with the cheaper boards here,
kids.  A fast machine is nice, but a reliable one is nicer.  If you absolutely
_MUST_ have a '20 for the speed, choose you 2nd party boards _very_ carefully
and expect to spend more for them.


| Terry Lambert           UUCP: ...{ decvax, ihnp4 }                          |
| @ Century Software          : ...utah-cs!uplherc!sp7040!obie!wsccs!terry    |
| SLC, Utah                                                                   |
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