mtune=nocona

[Arjan van de Ven]

On Thu, 2005-06-09 at 15:28 +0100, P at draigBrady.com wrote:
> Arjan van de Ven wrote:
> > On Thu, Jun 09, 2005 at 10:15:48AM -0400, Dan Williams wrote:
> > 
> >>The question, distilled:
> >>
> >>Would you like: (a) Small speed hit for Opteron users, OR (b) much
> >>larger speed hit for EM64T users?
> > 
> > note the hit is REALLY REALLY small. Hard to measure kind of small.
> 
> Have you compared -march=k8 with -mtune=nocona ?

I didn't personally, but our gcc guys did and they said it was hardly
measureable if at all.

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