> -----Original Message-----
> From: Berin Loritsch [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, 23 October 2001 2:17 pm
> To: [EMAIL PROTECTED]
> Subject: Re: Fastest Platform (softwarewise)?
>
>
> Phil Blake wrote:
> >
> > Hi,
> >
> > We run apache/tomcat/cocoon on 3 server platforms, Linux,
> AIX and MacOS
> > X.
> >
> > Linux on a dual PIII 550, OSX on a PPC-G4 450 and AIX on a 4x250MHz
> > PPC-G3.
> >
> > Bang for buck, a G4 running OSX wins hands down. However,
> believe it or
> > not, the dual PIII comes in second (AIX don't come close... too
> > expensive for real consideration and Windows is not a
> server operating
> > system in practice, only in marketing).
>
> That's interesting, I didn't think OSX would come out on
> top--maybe second
> though. As to AIX, and this goes for Solaris as well, they are very
> expensive--so bang for the buck goes down. How about raw performance
> though? Which comes out on top?
>
> > The Dual PIII was about 10% more than the G4 (after adding SCSI) and
> > about 70-80% the performance.
>
> So for 10% more cost you gain 70-80% more speed. That is a reasonable
> tradeoff. What kinds of tests did you run? How does each one scale
> (as you add more clients). How many simultaneous connections can each
> platform handle before you reach saturation?
I don't think they ment that it was 70-80% *better*. I think that it was
70-80% of the original performance :{
> > Although theory has it that a G4 500MHz has about the same
> performance
> > as a PIII 1.5GHz (ie triple the performance), I've found that it's
> > really more like double the performance, not triple.
>
> Careful there. Clockrate != performance. When all things are equal
> (i.e. chip architecture, design, etc.), then clockrate is effective
> to determine relative performance increases. However, the G4 and the
> PIII have very different architectures. This is true of the PIII and
> the P4, and the P4 and the K7. In that case 1.5GHz in all three
> processors would have very different performance results. As far as
> I know, the G4 is not capable of the high clockrates, so it makes up
> for it with an efficient pipeline. The pentium series was designed
> for high clockrates.
>
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