Canopy Aggregate throughput question

When I test Aggregate throughput with Canopy BH10/20 or AP/SM, I found I can get enough throughput in single direction, but when I test it bidirection, I found Aggregate throughput is very low, so can anyone tell me the why ?

How do you have it config? 50% down 75% down?


What are the link tests like?

Ping times?