Microsoft Windows* 8.x

C-State

C-State residencies are collected from hardware and/or the operating system (OS).

For systems that collect OS C-State residencies, CPU C-states are core power states requested by the Operating System Directed Power Management (OSPM) infrastructure that define the degree to which the processor is "idle".

Hardware Event Skid

Event skid is the recording of an event not exactly on the code line that caused the event. Event skids may even result in a caller function event being recorded in the callee function.

Event skid is caused by a number of factors:

Self Time and Total Time

Intel® VTune™ Amplifier can calculate analysis-independent time spent within particular procedures and functions and within children (callees). This is the information for Self and Total time, respectively. The Bottom-up window shows only Self time. The Top-down Tree window and Source/Assembly window show Self time and Total time.

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