Re: [patch 0/2] sLeAZY FPU feature

[Arjan van de Ven]

On Sun, 2006-07-02 at 03:40 +1000, Nick Piggin wrote:

> What sort of test?

the one I did was long running FPU app (calculating PI using FPU)

>  Any idea of the results for a best case microbenchmark
> (something like two threads ping-pong a couple of futexes between them,
> in between doing a single FPU op)

ok I wrote a test scenario for this; the performance gain I get with
this is 8.5% 

the FPU part of the hot loop I used is
                A = 0.3 * (A+B);
with A and B doubles



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