Small UDP packet performance

Andrew May acmay at
Wed Jan 21 10:23:42 EST 2004

On Mon, Jan 19, 2004 at 05:02:27PM -0800, Eugene Surovegin wrote:
> On Tue, Jan 20, 2004 at 08:48:38AM +0800, Jacky Lam wrote:
> >
> >     Thanks. My case is that I am using NetPerf to test the UDP performance.
> > I am using a x86 with GigaEthernet card and sending packet to my 405EP in
> > full speed. I find that the box nearly dead in first min and lost all
> > packets. I know that it is unavoidable. But I want to know anyway to improve
> > as much as possible.
> >
> >     What is NAPI? How can I make use of it?
> Please, use google as I suggested and you find good discussion of the
> problem you are experiencing.
> Right now, there is no publicly available NAPI-enabled  driver for
> 4xx, although I have something done in that direction, but unfortunately
> I put this task on hold because of more urgent problems :( (maybe I'll
> return to it this or next month)

Here is what I have done for a NAPI version of the driver. I don't have time
either to do a patch or merge this up to the latest kernel. I have frozen down
at 2.4.21-pre4 somewhere and I won't be merging anytime soon. It is stable for
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 405napi.tgz
Type: application/x-gtar
Size: 28265 bytes
Desc: not available
Url : 

More information about the Linuxppc-embedded mailing list