[RC5] Tillamook cpu selection problem

Dave Avery cwax at pacbell.net
Sat Nov 29 14:56:34 EST 1997


Jim McManus wrote:
> 
> I ran the benchmark from the GUI and, no surprise,  the pentium, pentium MMX
> core was the fastest. I was curious how the processor is determined. I noticed
> that when NT starts is somehow knows it's in a "genuineintel" processor. Does
> the code look for something embedded in the processor that is returned when
> some certain instructions are run? Or does it run a few instructions and guess
> based on the results?
> 
> Reid Conti wrote:
> 
> > > I just got a Toshiba 750 which has the new 233MHz mobile pentium, and almost
> > > everytime I start the client it picks a different core. Out of the six  available
> > > cores,
> > > it's picked everyone except the AMD K6. Any ideas on why it keeps cycling the
> > > processor cores?
> >
> > They're probably close.  Try doing -benchmark2 specifying each core.
> > You'll probably find 2 or 3 that have VERY similar speeds, some that are
> > WAY off.  Then -benchmark the last 2 or 3 that are close, and pick the one
> > that looks the fastest :)

it runs a quick benchmark with each of the cores and uses the
fastest tested. if anything else is running it will be mislead

dave
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