asp .net v4.0 in the list of iis web server extensions.

HTTP Service Request Queues (All instances): For example, if your server is consuming 90% of CPU and the sum of the W3WP.exe CPU consumption is 10%, you clearly have an issue elsewhere than IIS

% Processor Time: Allows you to put in balance the total CPU consumption with each W3WP.exe.

Private bytes: Allows you to see the private memory for the process W3WP.exe.

Virtual Bytes: Allows you to see the virtual memory for the process W3WP.exe.

% Processor Time: Allows you to see the CPU consumption for a given process.

It's interesting to put this in balance with the Available Mbytes counter

% Commited Bytes In Use: Allows you to see the used memory.It's important to be sure the server isn't undersized for the needs of the application Available Mbytes: Allows you to see the available memory.Here is a non-exhaustive list of counters you could use to get this vision: You need to check CPU, Memory, etc and put this in balance with your application and IIS. However, it could be interesting to broaden the scope to get key values in order to have a global vision of how the whole server is behaving instead of just IIS or ASP.NET. By using those scripts, you should be able to get a good overview of your application and IIS behavior under load.

To do so, you could use the excellent PAL tool ( ) which gives a predefined list of counters to monitor based on the selected product. Now you know how to define your key values, you need to know how to collect them. Once you've determined the threshold limit before degradation and the threshold where everything is working well, you just must collect the performance counters and you'll get your key values. By doing a progressive load test, you should be able to identify when the application performance is degraded. Thus, it's essential to define those key values before putting your application in production. However, as every web-application and hence every IIS Server, will behave differently depending on what will be executed, obviously the threshold for which performance will be impacted will vary a lot.

One regular question posed to our team deals with the performance counters set-up to ensure IIS and ASP.Net application(s) are working properly.

Asp .net v4.0 in the list of iis web server extensions.