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CLRProfiler V4 Released

| Wednesday, February 2, 2011
CLRProfiler V4 is now publicly available.  You may download from here:

http://www.microsoft.com/downloads/en/details.aspx?FamilyID=be2d842b-fdce-4600-8d32-a3cf74fda5e1

This is of interest both to folks who want a free profiler to diagnose memory issues with their managed apps, and for folks who author profilers of their own, and would like to look at source code of a real-world example of a profiler.

If you just want to run it…
Then the following new features will be of interest to you:

  • CLRProfiler V4 allows you to profile managed code that uses .NET 2.0, 3.0, 3.5, or 4.0.  However, you must always have .NET 4.0 installed on your box in order to use CLRProfiler V4, as CLRProfiler itself contains managed code that depends on .NET 4.0
  • CLRProfiler V4 can target Silverlight 4 web apps.
  • CLRProfiler V4 may be used to attach to and detach from live processes, to generate heap graphs.  (Note:  This feature requires the process to be running .NET 4.0, does not work against Silverlight, and does not allow gathering allocation call stacks.)
  • CLRProfiler V4 understands in-process side-by-side CLR instances, and can allow you to pick which CLR instance from a given process to profile.
If you want to write a profiler…

Then you may look through the source code for examples of all the above features, including how to target Silverlight, use the attach / detach API, and how to implement the “pick-one” approach for in-process side-by-side CLR instances.

Read more: David Broman's CLR Profiling API Blog

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