Re: [Qemu-devel] Can you commit the pcnet patch ?

[Paul Brook]

On Thursday 21 July 2005 08:29, Lars Munch wrote:
> On Wed, Jul 20, 2005 at 12:32:10PM +0200, Ludovic Drolez wrote:
> > Hi !
> >
> > I've tried the latest AMD pcnet patch (made by Antony T Curtis) with qemu
> > 0.7 because I was tired of the sloooww PXE booting of my QEMU. For
> > exemple, to load a linux kernel + initrd over TFTP, it takes 4m30s with a
> > ne2000, and 1m35s with the PCNET card.
>
> Does anyone know why pcnet is so much faster than ne2000? is it easier
> to emulate? or is there room for improvements on the ne2000?

Probably because it's a DMA capable controller. IIRC the ne2k is pio based, so 
has to shuffle the data through an IO port one byte at a time.

Paul