EMA C++ Performace Tools Guide : 10 Performance Best Practices : 10.4 Other Practices: CPU Binding
 
10.4 Other Practices: CPU Binding
Although the OS tries to balance its load intelligently across multi-core processors, you can improve performance by locking the threads of a process to specific cores and CPUs. This lessens the likelihood of switching a thread from one core to another, which impacts processing time and invalidates the cache that the thread has filled.
Each Enterprise Message API Performance Tool allows CPU binding through its respective -threads option. LSEG recommends that you test different bindings for each tool to see which works best on each system.