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From: goldman@ucsfcca.UUCP (Eric Goldman)
Newsgroups: net.micro.6809
Subject: Re: CoCo Dhrystone
Message-ID: <425@ucsfcca.UUCP>
Date: Tue, 26-Nov-85 04:42:54 EST
Article-I.D.: ucsfcca.425
Posted: Tue Nov 26 04:42:54 1985
Date-Received: Fri, 29-Nov-85 00:24:16 EST
References: <4380@garfield.UUCP>
Reply-To: goldman@ucsfcca.UUCP (Eric Goldman)
Organization: UCSF Computer Center
Lines: 29

In article <4380@garfield.UUCP> jeff1@garfield.UUCP (Jeff Sparkes) writes:
>
>	I just that the Commodore 64 has a Dhrystone rating of 36.
>Has anyone run the dhrystone test on a CoCo?  I'd be interested to
>see what the result is.  We'd better beat the 64!
>
>Jeff Sparkes
>jeff1@garfield.UUCP
>jeff1@garfield.mun.cdn  <- CDNnet

The following is the output from the "dhrystone" benchmark compiled with MW C
on a 64K CoCo, OS-9 Level I version 1.01.00.  Note that:

1) I modified the source to do only 25000 passes.  This halves the time for
the slower-than-a-Cray CoCo, but obviously has minimal effect on the accuracy
of the important result, the dhrystones/second figure.

2) I used the OS-9 getime() system call.  It was accurate to within one second
of my stopwatch.  (No, my CoCo does NOT have a clock card.)

The output from the dhrystone benchmark WITH registers:

Dhrystone time for 25000 passes = 238
This machine benchmarks at 105 dhrystones/second

The output from the dhrystone benchmark WITHOUT registers:

Dhrystone time for 25000 passes = 234
This machine benchmarks at 106 dhrystones/second