Subject: Re: Different speed CPUs show up as same speed
To: None <tech-smp@netbsd.org>
From: Matthias Kretschmer <mccratch@gmx.net>
List: tech-smp
Date: 06/16/2002 23:46:14
> It's easy to figure this out - simply look at whether executables will
> ever have instructions which may not be on both processors, like SSE, a=
nd
> if not, then there's nothing to worry about. Every Pentium Pro core (PP=
ro,
> P2, P3, all Celerons) has identical user mode binary compatibility; wit=
h
> the exception of the SSE stuff added for the purpose of marketing, ther=
e
> is no difference at all once the CPUs are initialised.

Referring to the PIII Specification mixed steppings are only supported if=
 the=20
cpus are of the same family and model which assumes, that PII and PIII mi=
xing=20
is not supported even if they are working on the same speed. If someone h=
as a=20
working system, than he has not read what is supported - if something isn=
't=20
supported it is somehow stupid to buy and use it even if someone hopes it=
=20
works. If one system is working with this configuration, this could be lu=
ck,=20
another system may work or not work, so why should this be supported - fo=
r=20
only a small amount of people running these boxes having luck? some overk=
ill,=20
isn't it!?

--=20
Greetings
Matthias Kretschmer