Re: about the tuning of eepro100

["Paweł Krawczyk" <kravietz@aba.krakow.pl>]

On Sat, Aug 10, 2002 at 06:55:58PM +0100, Jamie Lokier wrote:

> I don't think you will get better than 90% performance, but if you do
> please let me know!  I have written another e100 driver, in an attempt
> to transmit and receive small packets at the maximum possible rate.
> In tests, it would not even transmit at 100% small packets on our 82558.
> (I didn't do that test on our 82559).

Maybe we were looking for separate things - I had a firewall box with
100base-TX interfaces and when flooding it at full rate with small
(40 bytes, i.e. empty IP headers) packets the system was unusable
because of the interrupt rate. After I turned the bundling on, there
was no signs of overload. Of course, I tested throughput of the
card as well but on the IP level there was no difference I could
worry about. But as I said, this was a firewall box and I was looking
for a way to stop possible DOS, not for tiny packet delivery time
slowdown, which may be important in other applications.

-- 
Paweł Krawczyk, Kraków, Poland  http://echelon.pl/kravietz/
crypto: http://ipsec.pl/
horses: http://kabardians.com/