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<p><tt>Hello Ralph,</tt><br>
<br>
<tt> Thanks for sharing what you have found. Do you have any tool to log the device flow control? It would be good if the root cause can be figured out.</tt><br>
<br>
<tt>Thanks</tt><br>
<tt>Shirley </tt><br>
<br>
<tt>Ralph Campbell <ralph.campbell@qlogic.com> wrote on 02/14/2008 10:29:43 AM:<br>
> The setup is two nodes, any QLogic HCA, running IPoIB-CM with<br>
> 65520 MTU running netperf, iperf, etc.<br>
> I haven't tried mixed sets of QLogic & Mellanox but I wouldn't<br>
> be surprised to find similar results.<br>
> It does vary somewhat from distro to distro, kernel<br>
> version, TCP parameters, etc. but is easily reproducible.<br>
> I also haven't had time to investigate the causes.</tt></body></html>