EMA C++ Performace Tools Guide : Appendix A Troubleshooting : A.5 Latency values Are Very High
 
A.5 Latency values Are Very High
 
Run the applications on the same machine.
Use a reliable clock to gather timestamp information.
Perform appropriate system-wide tuning.
Consider packing messages into the same buffer. It is possible that the connection type cannot sustain the data rate when sent as individual messages.