Lower the max RPC infights to 480 (was 960).  Before I can run iozone at most two times.  Now I am running 9+ times without failure. It took about 20 mins to finish on node r100.
Lower the max RPC infights to 480 (was 960).  Before I can run iozone
at most two times.  Now I am running 9+ times without failure. It took
about 20 mins to finish on node r100.

pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable,pscedu/slash2-stable