pipe testing and kernel copyin/copyout/bcopy performance

[Dave Leimbach]

Matthew Dillon <dillon at xxxxxxxxxxxxxxxxxxxx> writes:

>     Just to let people know, in case anyone is wondering why I have been so
>     quiet lately :-)
> 
>     I've been running some major pipe benchmarks to compare various pipe 
>     optimizations as part of a paper (FreeBSD's) Alan Cox and I are writing.
> 
>     At the same time I've delved deeply into the AMD64 and have been working
>     on optimizing the kernel bcopy, memcpy, copyin, and copyout to use
>     XMM instructions when possible.

Great!  How about SSE1 for us Athlon P4/Xeon users? :)  


> 
>     I hope to have something committable by tomorrow.
> 
> 						-Matt

Cool I was just pricing out some opterons :).

Dave