Re: Have you read this?

[Don <dr2@xxxxxxxxxxxx>]

Leif,

since we're dealing down in this area of functionality limited by the CPU,
isn't there a governor process that basically dummies down the CPU or
makes it idle cycles to allow for performance differences between models?  

Seems like I heard something back a while ago (unconfirmed!) that alot of
the boxes shipped are in effect using the same CPU but have this governer
tweeked to basically disallow one from getting the full performance and
forcing one to buy more stuff...  IN THEORY, as I was once told, if you
could tweek this governor, you could open the cpu wide open for full
performance...  

Comments?

Don in DC

---------

On Wed, 12 Jan 2000 leif@attglobal.net wrote:

> > except that on some (all?) AS/400 models, the PowerPC floating point
> > unit is disabled while running OS/400. So the calculations would run
> > very slowly with emulated floating point operations.
> > ---------------
> > I find it a little difficult to believe that Rochester would design what
> they
> > call "IBM's fastest floating point processor" for the old Muskie chip sets
> and
> > then turn the thing off in all of those 530 and 53S machines.  Maybe the
> FPU's
> > are turned off in low-end machines - that would be about par for the way
> IBM
> > screws us over to create their bloody "price points" - but in all models?
> That
> > doesn't seem reasonable.
> 
> I have actually only confirmed this on low-end modes. I don't know about
> the high-end (that why the 'all' had a ? next to it). I was hoping from some
> input from IBM lurkers on this.
> 
> About the fast FPU, don't forget that it is also used on AIX.
> 
> 
> 
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