Re: How are CPU Speed and Overall CPW Related?

["Nathan M. Andelin" <nathanma@xxxxxxxxx>]

Several week ago, List participants shared performance statistics pertaining
to string handling in RPG, Java, and MI.  Ken Slaugh shared an RPG code
sample that did some simple string manipulation within a tight loop.  So the
work was entirely CPU bound.  I ran a fully optimized copy of his program on
my machine.  The elapsed CPU time on his machine to run the program was
1260000 *MS.  The elapsed time on my machine was 2100000 *MS.  His machine
had a CPW rating of 114.  My machine had a CPW rating of 73.  So there
appeared to be a close correlation between machine CPW and program execution
speed.  Now I have learned that his machine has a 100 Mhz Apache processor,
and my machine has a 200 Mhz Northstar processor.

Why did it take my machine more CPU time to run the program?  It was the
only thing running at the time (other than normal Jobs, holding in a Wait
state), so it was not affected by other Jobs.

Thanks,

Nathan.

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