Solution: TX performance problems with 3Com 905C cards

Mike Silbersack silby at
Thu Feb 19 12:06:21 PST 2004

On Thu, 19 Feb 2004, Marian Durkovic wrote:

> Hi all,
>    the performance problem seems to disappear, when the hardware checksuming
> for TX direction is disabled (RX hw checksuming still on).
> Here are the results:

Hm...  This, combined with Matt blaming the Tx checksum for corrupting
packets seems to spell the end for 3Com 905 checksumming.  I'll turn it
off in a few days.

Thanks for the good detective work.

Mike "Silby" Silbersack

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