[erlang-questions] Fwd: Chameneos.rednux micro benchmark

Isaac Gouy <>
Sun Oct 12 19:49:53 CEST 2008


--- Kevin Scaldeferri <> wrote:

> 
> On Oct 12, 2008, at 12:27 AM, Kenneth Lundin wrote:
> 
> > Hi,
> >
> > It is not at all surprising that the SMP version run much slower
> than
> > the non SMP version.
> > I looked at the program source and what I find there is an
> > implementation that does not allow very much of
> > parallell execution.
> 
> I agree with your analysis, but not with your conclusion.
> 
> We can expect that the SMP version will not run much faster. 
> However, we might also hope that it does not run orders of magnitude
> slower.
> 
> At the moment, pthread based solutions are slaughtering Erlang, and  
> also achieving up to 350% CPU utilization.

Is there some well known understanding of how CPU utilization should be
reported for multi-core and many-core? 

350% utilization sounds quite wrong - but that's probably just me.


      



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