WPR

WPR stands for Windows Performance Recorder, a system performance tracing tool included in the Windows Performance Toolkit of the Windows Assessment and Deployment Kit (ADK). It records detailed telemetry from the operating system and applications by enabling Event Tracing for Windows (ETW) providers, producing data that can be analyzed for performance issues or startup diagnostics.

WPR is used together with Windows Performance Analyzer (WPA) to view traces. It collects data on CPU usage, disk and file I/O, memory allocations, graphics, network activity, and power. It can record single runs or longer sessions, focusing on specific scenarios such as boot, application launch, or user workload.

The tool is commonly invoked via the command line as wpr.exe or via a graphical interface wprui.exe. Profiles define what to record and how much detail to capture; you can start a trace with a selected profile, perform the workload, and stop the trace to produce an ETW-based .etl file. The resulting file is analyzed in WPA to identify bottlenecks, latency, or resource contention.

WPR is a core component for performance engineering on Windows and is used by developers and IT professionals for profiling and troubleshooting. It requires administrative privileges and is tied to the Windows ADK; updated versions align with Windows releases.

Other uses of the acronym: WPR may refer to other terms in different domains, though Windows Performance Recorder is the most common in technology contexts.