title: windows azure automatic scaling
body: <p>Hi I have a web app deployed as a Cloud Service on Windows Azure. Now I am performing some load/stress test against this app. In the Azure Management Portal I have configured the web role to scale automatically when the CPU goes over 40%. </p>
  
  <p>I start the tests with only one instance of this web role. As the test progresses, I have set the number of concurrent users to increase over time up to 2000 users.</p>
  
  <p>After I start the test, I connect via remote desktop to the web role instance on Azure and I monitor the CPU usage. After 10 mins or so, the CPU is constantly at 100% (and in fact my requests in the test take a very long time to complete) but if I check the CPU of the very same web role on the Azure management portal it says 1, 2 or 6, there was a peak of 70% but it sunk back immediately (but never the values I see in its task manager when I am connected in remote desktop) or even does not display any value (I go to the dashboard page of my cloud service), which means the graph is not updated any more. </p>
  
  <p>Furthermore, and this is the point of my question, NO SCALING of the web role instances is performed whatsoever. </p>
  
  <p>Any ideas where/what I am missing? Feel free to ask if my explanation is incomplete.</p>