Re: i686 quirk for AMD Geode

Bernd Petrovitsch
2009-11-11T10:55:05Z

Hi!

On Tue, 2009-11-10 at 21:54 +0100, Pavel Machek wrote:
[...]
> > CMOV/NOPL are rarely used, thus have no reason to cause a massive
> > performance drop, but are frequent enough (at least cmov) for almost
>
> *One* CMOV in the inner loop will make your performance go down 20x.
But it runs.
The pragmatic side is:
If people notices the performance drop, it would be good to have
something in syslog and/or dmesg and/or /proc and/or sysfs
If people do not notice the performance drop, who cares?

Bernd
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