How to monitor performance of web application behind IIS?

I have web application installed on the IIS 6. Now i would like to check how m开发者_开发百科any requests are coming to it, How much processor - memory - time it takes to process each request.

Is there something that i can do to achieve this ?

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Use Windows Performance monitor, this article should help you understand which counters do you need:

ASP.NET Performance Monitoring, and When to Alert Administrators

A starter guide: Using the System Monitor (PerfMon) with ASP.NET Applications (IIS 6.0). It also contains useful links to the articles describing ASP.NET-related performance counters.