The tools currently include an xperf trace capture tool, an xperfview visualization tool (also known as Performance Analyzer), and an xbootmgr boot trace capture tool. The tools are designed for the analysis of a wide range of performance problems including application start times, boot issues, deferred procedure calls and interrupt activity (DPCs and ISRs), system responsiveness issues, application resource usage, and interrupt storms. The MSIs containing these tools are available in the SDK bin directory (one per architecture).

The tools are built on top of the Event Tracing for Windows (ETW) infrastructure. ETW enables Windows and applications to efficiently generate events. Events can be enabled and disabled at any time without requiring system or process restarts. ETW collects requested kernel events and saves them to one or more files that are referred to as "trace files" or "traces."

These kernel events provide extensive details about the operation of the system. Some of the most important and useful kernel events that are available for capture and analysis are context switches, interrupts, DPCs, process and thread creation and destruction, disk I/Os, hard faults, processor P-state transitions, registry operations, and many others.

Al though the team that made this tool must be extremely knowlegdeable in terms of Windows, they must have missed a marketing session or two ;-)

Windows Performance Tools Kit v.4.1.1.

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