Re: [discuss] Re: [PATCH] Allow all Opteron processors to changepstate at same time

From: Alan Cox
Date: Tue Jul 11 2006 - 11:56:20 EST


Ar Maw, 2006-07-11 am 15:14 +0200, ysgrifennodd Arjan van de Ven:
> if you have per cpu offset and speed, then you don't even need to tie
> all frequencies together... sounds like the best solution to me..

CPU clocks on some systems are not stable relative to one another. Doing
the maths only works if you know the divergence isn't cause by
independant clock sources

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