title: Unable to Load an IIS based webservice more than 30% CPU.
body: <ol>
  <li>I am load testing an IIS based webservice</li>
  <li>I need to find out what max. throughput it can support</li>
  <li>both the server and the load generators are setup in AWS</li>
  <li>The problem is that throughput of the webservice is not going beyond 1500 req/sec even on increasing the users from 500 to 3000, only response time increases (PS: i am using 15GB ram 8 core AWS machines for load generation).</li>
  <li>Eore wierd part is CPU usage is not 100%, it is merely30-40%</li>
  <li>Even the memory utilization is not high it is 20%.</li>
  <li>I tried many counters in PerfMon and did not see anything which could show possible bottleneck </li>
  <li>When I use a single machine to generate load it shows ~1500 throughput, if I add one more load generator then the throughput visibly drops to half on the original machine, still giving me a combined total of ~1500 requests/sec.</li>
  </ol>
  
  <p>WHat am I missing here? </p>
  
  <p>Thanks for your help in advance</p>