Hi Mark,
I have tested the SRIO example project (SRIO_TputBenchmarkingTestProject) in loopback mode and compare the result with throughput document value mostly both results are same. I have attached the log file for your reference.(Please visit the site to view this file)
I think the existing example project is most efficient code for SRIO performance test. Please use the MCSDK SRIO example code for your testing and let me know the result.
Thanks,