Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!ames!apple!usc!polyslo!vlsi3b15!lehi3b15!jearly
From: jearly@lehi3b15.csee.Lehigh.EDU (John Early)
Newsgroups: comp.sys.ibm.pc
Subject: Re: 286 Accelerator and Disk Interleave
Message-ID: <621@lehi3b15.csee.Lehigh.EDU>
Date: 15 Sep 89 20:06:26 GMT
References: <456@ryn.esg.dec.com>
Reply-To: jearly@lehi3b15.csee.Lehigh.EDU (John Early)
Organization: CSEE Dept. Lehigh University, Bethlehem, PA
Lines: 28

In article <456@ryn.esg.dec.com> simon@barnum.enet.dec.com (Curiosier and Curiosier...) writes:
>
>Yesterday I installed a 12 MHz 286 accelerator (Orchid's Tiny Turbo XTra) 
>into my 8 MHz XT.  The Norton SI went to 10.5 from 1.7, Landmark shows 
>8.7 MHz.  These tests are recommended by the accelerator manual for 
[stuff deleted]
>this time with a disk performance.  It was 0.5 of XT!  Before the accelerator 
>installation it was 2.

I had the same problem with my Seagate 251 when I chaged my 8088 to a V20...
my disk went from 1.8 to 0.6!  I backed up all 3 partitions and re-formatted
with an interleave of 5 (which made sense, considering the slowdown--I must 
admit to lacking the software for diagnostics that you do)  The speed returned
to a 1.8.  I would suggest re-formating the whole drive, unless you want to
try Spinwrite(commercial), which has worked wonders for friends.


>1.	Was it normal that the disk performance changed so drastically 
>because of an accelerator?

Probably _is_ normal, since the increased processor speed throws the I/O off.

John Early
jearly@lehi3b15.csee.lehigh.edu-- 

John Early
jearly@lehi3b15.csee.lehigh.edu
JPE1@Lehigh.Bitnet