What is Request Queuing and how to track queuing accurately at different level of IIS and ASP.NET ?

Hi All,

Consider a web application with below details :-

- Target Framework is .Net Framework 3.5
- Application Pool .Net Framework version 2.0.50727 with Integrated Managed pipeline mode

What do below performance counters suggests and difference among them?
 - ASP.NET V2.0.50727 Request Queued
 - ASP.NET V2.0.50727 Request Current and
 - ASP.NET V2.0.50727 Requests In Application Queue

In my case I find spikes in Request Queued but no values found in Requests In Application Queue. Why ?

What is Request Queuing and how to track queuing accurately at different level of IIS and ASP.NET ?

Any help is appreciated !

Thanks,

Sandeepkumar Gupta