[eepro100] eepro100 performance at small packet size ?

Donald Becker becker@scyld.com
Wed, 9 May 2001 14:12:43 -0400 (EDT)


On Thu, 10 May 2001, Young C. Cho wrote:

> I just orted eepro100 driver  on Linux 2.2.x kernel.
> The target PC is Pentium 200Mhz with enough memory to be used as a gateway.
> I tested the throughput of eepro100 driver resulting in Rx and Tx= 4Mbps at 64byte TCP packets.
>  and Rx and TX = 80Mbps at 1Kbyte TCP packets.
> The result at more than 1Kbyte TCP packets is satisfactory  
> but the case at small packet size  is a little of doubt.

I suspect you are seeing the defined behavior.
Do you know about Nagel and TCP slow-start?

Have you tried other adapter types?

Donald Becker				becker@scyld.com
Scyld Computing Corporation		http://www.scyld.com
410 Severn Ave. Suite 210		Second Generation Beowulf Clusters
Annapolis MD 21403			410-990-9993