Re: [RFC patch 15/15] LTTng timestamp x86

[H. Peter Anvin]

Linus Torvalds wrote:
> But it's not going to solve the "hey, I have 512 CPU's, they are all on 
> different boards, and no, they are _not_ synchronized to one global 
> clock!".
>
> That's why I'd suggest making _purely_ local time, and then aiming for 
> something NTP-like. But maybe there are better solutions out there.

At the same time, it would definitely be nice to encourage vendors of 
large SMP systems to provide a common root crystal (frequency standard) 
for a single SMP domain.  Preferrably a really good one, TCXO or better.

	-hpa
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