Hi Roland, Roland Dreier <[EMAIL PROTECTED]> wrote on 08/02/2007 09:59:23 PM:
> > On the same topic that I wrote about earlier, I put debugs > > in my code to store all skbs in bufferA when enqueing multiple > > skbs, and store all skbs to bufferB just before doing post. > > During post, I compare the two buffers to make sure that I am > > not posting in the wrong order, and that never happens. > > > > But I am getting a huge amount of retransmissions anyway, > > Why do you think the retransmissions are related to things being sent > out of order? Is it possible you're just sending much faster and > overrunning the receiver's queue of posted receives? I cannot be sure of that. But in regular code too, batching is done in qdisc_run() in a different sense - it sends out packets *iteratively*. In this case, I see only 225 retransmission for the entire run of all tests (while in my code, I see 100,000 or more (I think I gave wrong number earlier, this is the right one - 200 vs 100,000). Is there any way to avoid the situation you are talking about ? I am already setting recv_queue_size=4096 when loading ipoib (so for mthca too). Thanks, - KK _______________________________________________ general mailing list general@lists.openfabrics.org http://lists.openfabrics.org/cgi-bin/mailman/listinfo/general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
