In <[EMAIL PROTECTED]>, on 10/17/2005
at 10:58 AM, Bruce Black <[EMAIL PROTECTED]> said:
>IBM stopped publishing instruction timings when they started getting
>so variable. Instrucion Pipelining, processor cache, and many other
> factors affect the time of a given instruction, so it is no longer
>possible to calculate a meaningful time for an instruction.
The last couple of funky spec manuals in which I saw instruction
timings were absolutely laden with special cases. Were IBM to publish
one for the z9, it would make strong men weep.
--
Shmuel (Seymour J.) Metz, SysProg and JOAT
ISO position; see <http://patriot.net/~shmuel/resume/brief.html>
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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