In
<985915eee6984740ae93f8495c624c6c2319ba1...@jscpcwexmaa1.bsg.ad.adp.com>,
on 07/15/2013
at 07:00 PM, "Farley, Peter x23353" <[email protected]>
said:
>Whatever their timing formulas or model-dependant behavior, in the
>old days of non-pipelined or minimally-pipelined CPU engines you ran
>your batch application program once with the appropriate test data
>using the "production" load module on an unloaded or lightly loaded
>machine, then you ran it once more with the same test data using a
>changed version of the same load module on that same machine, and you
>could compare the timing of those two jobs to see if you had improved
>or worsened that program's performance characteristics.
With results that varied depending on what else was running
concurrently. OS overhead was another factor that was not consistent.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
Atid/2 <http://patriot.net/~shmuel>
We don't care. We don't have to care, we're Congress.
(S877: The Shut up and Eat Your spam act of 2003)
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