title: Number of threads in thread pool for good perfomance
body: <p>I have a <code>Executor</code> thread pool with core size and maximum size both kept at 40 and each thread will use a HTTP connection from <code>PoolingClientConnectionManager</code> of Apache HTTP client with 40 connections per host route. I can see that if load is less the performance is also coming less...can you guys please help me out?</p>