Excerpts from Randy Buck's message of Tue Apr 27 15:31:58 -0500 2010: > I've peaked at around 17 Mbps.
Interesting. Are you manually tweaking the TCP buffers or letting the autotuning stuff do it's magic? The buffering TCP does might smooth things out a bit over the UDP case. I'm fairly sure the UDP send buffers are fairly small by default on most systems. I'm betting that the UDP send() in Iperf is blocking due to a lack of buffer space in the kernel which in turn is caused by the inability to get enough time on the radio. The UDP sends in Iperf are very bursty and the burstyness might aggrevate the problem. Jon -- Jon M. Dugan <[email protected]> ESnet Network Engineering Group Lawrence Berkeley National Laboratory ------------------------------------------------------------------------------ _______________________________________________ Iperf-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/iperf-users
