In article <web.4102bb1b89c889b61b6d5cc50@news.povray.org> , "David Brewer"
<dav### [at] brewer-familyorg> wrote:

> I've been reading about performance benchmarks for PovRay on the G5 and it
> seems that there is a wide disparity in results.  Several have posted
> benchmark results (using the built-in Benchmark scene) of not much over 1
> minute with a dual 2Ghz machine,

Wherever you saw those results, they were either for another benchmark or
they were just plain wrong because either someone made a mistake running the
benchmark or intentionally manipulated the results for fun.  Happens all the
time.

> while others have posted upwards of 20
> minutes.  Running PovRay 3.6.0 on my dual 2 Ghz G5 machine, I'm getting
> results of about 38 minutes.

While I would expect something around 30 minutes, 38 minutes does not sound
all that far off.

> I don't see any issues related to CPU usage.
> It appears to use both processors equally at about 50%.

You cannot use CPU usage window to see how much processor time a specific
application consumes.  All you see there is the time-average over a second
or more that each processor was used. Applications will be executed on
either several times a second.  Use the Activity Monitor so see how much an
application uses on each processor.  POV-Ray only uses one thread for
rendering, and hence will only use one CPU.

> Any ideas about why there is such a difference?

There is none.

    Thorsten

____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

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