<snip> " A CPU pipeline is the hardware advance that makes measuring program CPU time a gambler's game, since there is no longer any guarantee at all that a program will consume the same CPU time from one execution to the next, even with totally identical inputs." </snip>
For a long as I can remember (IIRC MVT 21.7, long before pipelining), there has been a statement in the SMF manual in the chapter dealing with accounting similar to: "Measured CPU time is not guaranteed to be repeatable between 2 successive executions of the same program and inputs" (my paraphrase). ---------------------------------------------------------------------- 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
