Re: [PATCH] expand micro-optimizations in kernel to newer model CPUs

[Borislav Petkov]

On Sun, Dec 15, 2013 at 04:42:50AM -0800, John wrote:
> I am using ANOVA to establish that the generic group differs from the
> optimized group.

You probably should run a couple other benchmarks, in addition, for
greater confidence that this optimization actually brings any palpable
improvement and is not just causing code bloat.

For example, last time I did a perf profile of a kernel build on AMD
F15h, the PILERDRIVER "optimization" was actually even a bit worse than
the standard MK8 one.

http://marc.info/?l=linux-kernel&m=138081947417204

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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