dotTrace 2017.1 Help


Performance Profiler contains a number of filters that allow slicing and dicing profiling data by various conditions. The result of filter's work is always a set of time intervals or point events selected by a specific condition.

Filters are the main analysis instrument in Performance Profiler.


To apply a filter:

  • In the Performance Profiler window, click on the desired filter or select filter value from the list (if the filter provides multiple values). Note that you can simultaneously apply as many filters as you need.

After the filter is applied, it becomes highlighted in the Performance Profiler window. Filter name is changed to the currently selected filter value.


To clear a filter:

  • Click on the applied filter one more time.

To clear all filters:

  • In the Performance Profiler window, click the /help/img/dotnet/2017.1/ThemedIcon.ClearFilters.Screen.[Gray].png Clear filters button.

Filter Types

The list of filters in the integrated viewer is identical to the one in the standalone Timeline Viewer. Therefore, if you need more information on how a particular filter works, refer to the corresponding section of the Analyzing Timeline Profiling Results | Filters chapter:

  • UI Freeze
    Time intervals where the application is unable to respond to user input.
  • Thread State
    Filter time intervals by thread state (Running, Waiting).
  • Subsystems
    Subsystems are used to quickly evaluate how time in a particular call tree is distributed among various components: user and system code, WPF, LINQ, collections, strings, and more.
  • Events
    The group of filters which represent particular events related to the profiled application.
Last modified: 24 August 2017