Hi, all:

     I was testing networking performance from DomU to DomU running on different hosts. I used xentrace and xenalyze tools to get the trace info of receive side, and found that there was a time when vcpus (which handle the receive work) were in "Blocked" state.

     From the information of "VMExit" reason gotten by xenalyze tool, the "HLT" is the main exit reason. I am wondering when DomU will be exited because of "HLT"? 

     Thanks.