On Thu, 2005-03-03 at 16:26, Baruch Even wrote:

NAPI was not used because it caused skews in the performance, I haven't 
tested it myself, just passing hearsay.

It will help to post on this list when such issues are noticed. 
It could be a simple a driver bug: such a the one posted on by Lennert 2
days ago on e1000 NAPI - such a bug could have had serious repurcasions
on TCP because it sat on packets in DMA occasionally upto 2 seconds.
Seems like that bug has been sitting there for a long time.
What kernel version? What kind of skews?
Is it possible you tell this person to repeat the tests with 2.6.11?

cheers,
jamal