From: Holger.VanKoll@SWISSCOM.COM
Date: Mon Nov 04 2002 - 11:17:29 EST
Hello,
does anybody have some real-workload performance data of p670/690 or
whatever runs a power4 that he likes to share?
I am a bit disappointed about the performance of my p670 @ 1100 mhz...
its only double as fast as a sp 9076-power3-II @ 375mhz.
So its half as fast per mhz.
I measured it using self-written applications and aix-tools like gzip...
same results.
If you look at
http://www-1.ibm.com/servers/nl/eserver/pseries/p690/p690.html
you see a rperf of 50.56 for a 32-way-1100mhz-power4 and a rperf of
27.65 for a 24-way-450mhz-rs64IV.
Double as much for 32x1100mhz as for 24x450mhz.
That means 32 power4 @ 1100mhz are as fast as 48 rs64iv @ 450mhz. Or
35200 power4-mhz equal to 21600 rs64iv-mhz.
Of course these are only benchmark-numbers. Thats why I am asking for
real-life/workload experience.
I would not expect a next-generation cpu like power4 to need 1.5 or 2
times the clockrate of the older model to perform the same.
Regards,
Holger
This archive was generated by hypermail 2.1.7 : Wed Apr 09 2008 - 22:16:18 EDT