Thank you for your answer!
I wonder may be related to hardware resources shortage in my environment.
I have 2 physical host,and each host have 2 CPUs with 24 virtual thread cores and 128G memory,that's mean,
in my cluster ,I have a total of 96 virtual cpus and 256GB of memory to run the benchmark,each host has 4 10GB
optical fiber nic ports, 1 for management, 1 for vmotion and 2 as virtual switchs,all of those optical fiber nic ports
connect to a 10GB FC Switch.
And each host use a Qlogic 2562 8GB HBA card to connect a EMC SAN storage,there is 5 LUNs in this SAN
storage, two host share those 5 LUNs,each LUN has 2tiles.
So,any suggestion for me ?
Thank you!