Some previous posters on this thread discussed running in LPARs with different weights. I wanted to point out that in addition to an MP-effect at the box level, there is also an MP-effect at the LPAR level depending on how many CP's are defined to that LPAR. So in the z9 BC example previously discussed, if you have less CP's defined for your test you will get more throughput per CPU second, resulting in less CPU time to do the same work (of course based on other factors like cache hit already discussed).
Back in 2005 Gerhard Adam demonstrated this internal LPAR effect at our site by running test jobs on a 2-way and a 23-way LPAR both running on the same z990. Net, I believe that the only way you will get consistent results is to set up a repeatable benchmark on a dedicated machine, or accept the variance as unavoidable. Dan ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html