Ian McDonald wrote:
It appears that I can (almost?) completedly deadlock a
TCP connection when using TSO on 2.6.13.2.  My test involves
trying to send 200Mbps between two interfaces.  With TSO enabled (ie, the 
default
for e1000 NICs), in less than 1 minute, there are no more packets transmitted,
though it does run nice and fast untill it completely breaks :P


What about latest netdev tree rather than 2.6.13.2?

There have been changes going on...

Yep..but the answer is always to try one later build..and
it takes time (I reported similar problems in 2.6.11 and was
told that 2.6.12 (or maybe .13) was going to fix it...)
I am afraid that if I go to the effort to reproduce the problem
in 2.6.14, someone is just going to tell me to try the latest
pre-15 code.

I am frusterated that the linux kernel seems to be
unstable for high levels of TCP traffic for very common
hardware (e1000).

Is anyone doing tests that involve high levels of bi-directional
TCP traffic using TSO?  If so, please let me know your results.
It's always possible I am screwing something up..

Thanks,
Ben

--
Ben Greear <[EMAIL PROTECTED]>
Candela Technologies Inc  http://www.candelatech.com

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