* Michael K. Edwards <[EMAIL PROTECTED]> wrote:
> On 2/22/07, Alan <[EMAIL PROTECTED]> wrote:
> > We don't use the FPU in the kernel except in very weird cases where
> > it makes an enormous performance difference. The threadlets also
> > have the same page tables so they have the same %cr3 so its very
> > cheap to switch, basically a predicted jump and some register loads
>
> Do you not understand that real user code touches FPU state at
> unpredictable (to the kernel) junctures? Maybe not in a database or a
> web server, but in the GUIs and web-based monitoring applications that
> are 99% of the potential customers for kernel AIO?
> I have no idea what a %cr3 is, [...]
then please stop wasting Alan's time ...
Ingo
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