> I see. This didn't happen on our setups here since we tests with 
> newer cards (ConnectX2/3/3-pro).
> For ConnectX1 (A0) and this firmware that you are using smells 
> like something goes wrong. If possible, I would change to newish 
> card.

No problem with that. My journey up to here was hard but very 
interesting. Especially when you expect everything in the system
to be consistent and new speedups with every new kernel or
driver version. Encountering a throughput drop of nearly 50% 
with the upgrade of our NFS servers I was challenged.

With TSO disabled on our old cards I'm back to LRO speeds and 
I'm more than happy with that. 

Just a final clarification for the interested reader: Are the TCP Ids 
in an TSO setup generated through firmware or in the software 
stack? And if in firmware: How does the card know how to 
increase them? I would expect that it only works with IB packets
and does not know of the IP encapsulation.

Best regards.

Markus
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