Target audience


  Novice users
  Intermediate users
  Power users
  System administrators
  Support engineers
  Application developers
  Kernel developers
  Audio professionals

An in-depth look into the Windows dispatcher

The dispatcher (also known as scheduler) is part of the Windows kernel executive responsible for scheduling units of executions among available processors. Units of execution can be threads that belong to a process but also involves ISRs (interrupt service routines) which execute on behalf of either a hardware or software interrupt and DPCs (deferred procedure calls) which are routines of execution scheduled by the kernel.

This software gives an in-depth look into what is actually running on your processors.

DispatchMon will monitor the following activities:

  • ISRs (routines that execute as an interrupt handler)
  • DPCs (routines that get scheduled by the kernel and executed at elevated IRQL)
  • PageFaults (hard faults, transition faults, demand zero faults, access violation or other)
  • Context switches
  • Ready thread (threads ready to begin execution)
  • Thread execution

    This software supplies time stamps of each activity but does not measure actual execution time of each routine. If you are interested in execution times of ISRs, DPCs and hard pagefaults you should take a look at our LatencyMon utility.

    Supported operating systems

    DispatchMon runs on the following operating systems:

  • Windows 7 32 bit editions
  • Windows 7 x64 editions
  • Windows 2008 Server
  • Windows 2008 Server x64 editions
  • Windows Vista
  • Windows Vista, x64 editions

    NOTE: Because this software relies on ETW tracing, DispatchMon does not support any version of Windows XP.


    DispatchMon comes as a free installer download. Click here to download DispatchMon.

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