Subject: Re: Different speed CPUs show up as same speed
To: Perry E. Metzger <>
From: Rick Kelly <>
List: tech-smp
Date: 06/13/2002 17:41:38
Perry E. Metzger said:

>Yes there is. The locking protocols on the two processors are not
>guaranteed to have compatible bugs if the processors aren't the same
>stepping. I'm pretty surprised that this is working for him --
>everything I know for x86 says if you do SMP, you need identical
>processor steppings.

Sequent got away with it on their 386 boxes, but the 486 machines did
use uniform processor speeds, as I remember.

Rick Kelly