[openfabrics-ewg] OFED 1.0 rc5 SDP regressions

Scott Weitzenkamp (sweitzen) sweitzen at cisco.com
Wed Jun 7 01:12:24 PDT 2006

> SDP: 
> The new SDP implementation is mainly focused on stability and
> correctness and not performance. We will do a simple analysis 
> and if we
> will find things we can easily fix we will do it. However major
> performance improvements will be done in the next release.

I don't remember any warnings ahead of time that the new SDP would not
have the same performance as the old SDP, so I'm still surprised by the
situation.  I'm having a hard time with losing >1 Gbps throughput and
small-message latency now worse than IPoIB.  Maybe we should revert to
the old SDP for OFED 1.0?

I just opened a scalability bug, #109
(http://openib.org/bugzilla/show_bug.cgi?id=109), "OFED 1.0 rc5: SDP
can't sustain 800 concurrent SDP connections".


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