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? > 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. --------------------------------------------------------------------- Please check that your question has not already been answered in the FAQ before posting. <http://xml.apache.org/cocoon/faqs.html> To unsubscribe, e-mail: <[EMAIL PROTECTED]> For additional commands, e-mail: <[EMAIL PROTECTED]>
