Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!cbmvax!cbmehq!cbmdeo!adspdk!hclausen
From: hclausen@adspdk.UUCP (Henrik Clausen)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A2090 transfer rate
Message-ID: <18574e24.ARN11e2@adspdk.UUCP>
Date: 10 Dec 90 12:27:00 GMT
References: <275ED943.1B02@wilbur.coyote.trw.com>
Reply-To: hclausen@adspdk.UUCP
Followup-To: comp.sys.amiga.hardware
Organization: Graffiti Data
Lines: 28

In article <275ED943.1B02@wilbur.coyote.trw.com>, Dave Agabra writes:

> 
>     I have an old A2000 (rev 4.2) with an A2052 (?) 2MB memory board, a
> A2090 disk controller, and a 20Mb Miniscribe disk drive.  Below are the
> results I get with DiskPerf.  Are these normal for this hardware setup?
> 

   [DiskPerf result lived here]

> r/w speed:	    buf 32768 bytes, rd 166882 byte/sec, wr 108100 byte/sec

   For a 20M ST 506 drive, this is what you'd expect. I got 170K - 230K in
my A2090 setup on max buffers. If the partition is empty, it could be
marginally better, though not enough to bother about.
 
   If you put in a SCSI drive, you'll get much better speeds, though not
quite up to todays standards (A2091, GVP, Supra, Golem SCSI-II, ...)

   Dunno about the R/W errors at large buffer sizes, that sure didn't occur
on my A2090.


                                                      -Henrik
______________________________________________________________________________
| Henrik Clausen, Graffiti Data | If the Doors of Perception where cleansed, |
| ...{pyramid|rutgers}!cbmvax!  | Man would see Reality as it is - Infinite. |
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