[netperf-talk] SCTP Benchmark significantly slow

[Chris Lydick]

Hello,

I am a graduate student from Kansas State University, and have been
doing some modeling with SCTP over the past year or so. I have expanded
the modeling to verification through a laboratory environment, and have
been working with Netperf to help verify my modeling environment.

The only issue is that for some reason, I am unable to get any "decent"
results using the SCTP_STREAM test within Netperf. Here are some of my
findings:

Using a 1Gbps Ethernet line between two nodes, I receive nearly
987Mb/sec through the TCP_STREAM (this seems very accurate), while on
the SCTP_STREAM side of things, I am only receiving at most 2.4 Mb/sec.

I notice similar behavior when using one machine as both the source and
destination of the test.

I am using two Linux (Ubuntu 7.04) machines for the benchmarking,
equipped with libsctp1 (1.0.6.dfsg-4), and libsctp-dev (1.0.6.dfsg-4)
libraries.

I have also tried adjusting the buffers through the command line
prompts, but they have had little effect.

Do you have any suggestions?

Thank you for your time!

Chris Lydick
lydick at ksu.edu