Currently max pool size set for statless session bean is set to 100, how do I find out from the JMX console this is the optimal size ?

Let's say 200 request came in at the same time, jboss allocate 100 beans to process the first 100 request and the reminain 100 request were waiting to get the beans allocated ?  Once I know 100 requests were starving for the bean I will increase the ejb pool size from 100 to 200. From the JMX console I am strugging to find the information that 100 requests were waiting ?  OR  is there any other way to capture this information ?

Thanks