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Preemption time

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Applies to: yesVisual Studio noVisual Studio for Mac

Note

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These segments in the timeline are associated with the blocking time that is categorized as Pre-emption. This category implies that a thread is switched out because of one of these reasons:

  • The scheduler replaced it by using a higher priority thread.

  • The execution quantum of the thread expired and other threads were ready to execute.

    During this time, a thread has been blocked by a kernel wait reason that the Concurrency Visualizer is counting as Pre-emption. Pre-emption segments start when a thread is pushed out of a logical core, and end when that thread resumes execution.

    The tooltip for a pre-empted segment displays the name of the process or thread that caused the pre-emption. However, this does not imply that the process or thread that took over actually ran throughout the preempted period.

See also