Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!cornell!batcomputer!riley
From: riley@batcomputer.tn.cornell.edu (Daniel S. Riley)
Newsgroups: comp.sys.amiga
Subject: Re: Starboard SCSI board woes. (slow as christmas)
Message-ID: <8140@batcomputer.tn.cornell.edu>
Date: 7 Jun 89 20:25:41 GMT
References: <19142@cup.portal.com>
Reply-To: riley@tcgould.tn.cornell.edu (Daniel S. Riley)
Organization: Cornell Theory Center, Cornell University, Ithaca NY
Lines: 19

In article <19142@cup.portal.com> silver@cup.portal.com (Jim B Howard) writes:
>Is there any way to speed up this Starboard SCSI controller of mine?
>The best rates I can get from it are 53k per second according to
>diskperf and autotest.  I called Microbotics and they told me, 
>"sorry, its not much faster than your floppy drive."

>My drive is no problem , its a 277N (40 ms).  Definatly faster than 50k/sec.

On a decent sized transfer, I get around 100K per second with the Starboard
(Stardrive) SCSI controller and an ST225N (which is a *slow* drive).  50K/sec
is well out of line.  The first obvious question is, are you using FFS?  If
not, get it.  Assuming you are, what interleave did you format to?  Most
of the Seagate drives seem to prefer an interleave of at least 2, and the
slower ones (like mine) might be better off at 3.  Note that changing the
interleave value in the mountlist does nothing for a SCSI drive--you have to
redo the low-level format completely.

-Dan Riley (riley@tcgould.tn.cornell.edu, dsr@lns61.tn.cornell.edu)
-Wilson Lab, Cornell U.