Performance tools support two methods of profiling code: sampling and instrumentation. You can use the performance session property to specify the most appropriate collection method for your application. If you are using command-line tools, see Command-line Tools section of the documentation for more information.
To choose a collection method
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In Performance Explorer, select the performance session.
A performance session file name has a .psess extension.
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Right-click the performance session, and then click Properties.
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In the Property Pages, click the General properties.
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Click Sampling or Instrumentation.
For more information, see Understanding Performance Terms and Guidelines for Using Performance Tools.
See Also