DispatchMon

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