Re: Tcp/ip offload card driver

David S. Miller
2002-05-10T17:58:17Z

From: Pete Zaitcev <zaitcev@redhat.com>
Date: Fri, 10 May 2002 13:55:52 -0400

> For example, do a SpecWEB run with TUX both using on-chip-TCP and
> without, same networking card. Show a demonstrable gain from the
> on-chip-TCP implementation. I bet you can't.

NO! Doing such a test sets you up for a failure. If a vendor
of the card provides an on-chip TCP, it is entirely in the
vendor's interest to penalize regular TCP (for example, by
failing to provide checksum offload or sane S/G segments).

I only consider fair a test of on-chip TCP compared to
the best of the normal NICs.

Sorry, I should have stated this explicitly. The same card
must have SG/Checksumming capability for the no-TCP-onchip portion of
the test.