gige benchmark performance

Felix Rauch rauch at
Fri Mar 15 15:29:45 EST 2002

On Fri, 15 Mar 102, Mikhail Kuzminsky wrote:
>   We found very big difference between 32-bit PCI on Athlon/700 Mhz
> nodes (Gigabyte GA-7VX mobos)
>  and 64-bit/33 Mhz PCI on Tyan S2460 for Intel Pro/1000T cards.
> 32-bit PCI gives for netperf TCP_STREAM tests only about 300 Mbit/s,
> but on S2460 we received excellent results - about 910 Mbit/s for
>   The tests looks as not CPU bound.
>   Theoretically it may be also due to difference in software :
> for Athlon/700 we tested RH 6.2 (2.2.14-5 kernel) and RH 7.1
> (if I remember correctly, kernel 2.4 was standard in distribution)
> w/3.0.10 version of e1000.

On our 1 GHz PIII machines with Hamachi GNIC-II Gigabit Ethernet cards
we also found out that there is a significant increase in TCP
bandwidth when going from 2.2.x to 2.4.x kernels (I don't remember the
exact numbers though). So kernels _do_ matter too.

- Felix
Felix Rauch                      | Email: rauch at
Institute for Computer Systems   | Homepage:
ETH Zentrum / RZ H18             | Phone: ++41 1 632 7489
CH - 8092 Zuerich / Switzerland  | Fax:   ++41 1 632 1307

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