![]() On MSDN, this includes a complete command-line and Extensible Markup Language (XML) reference. What's New in the Windows Performance Toolkitĭescribes the new features available in this release. For extended discussion of key scenarios, see WPA Scenarios. For complete documentation of the WPR UI, see WPA Features. WPA provides an Issues window to explore the root cause of any identified.įor basic procedures and a detailed walkthrough, see the WPA Quick Start Guide. WPA is a powerful analysis tool that combines a very flexible UI with extensive graphing capabilities and data tables that can be pivoted and that have full text search capabilities. For complete reference material, including a recording profile XML reference and a legacy Xperf reference, see WPR Technical Reference. For discussion of key scenarios, see WPR Scenarios. For reference of command-line options, see WPR Command-Line Options. For complete documentation of the WPR UI, see WPR Features. For more information about the WPRControl API, see WPRControl API Reference.įor quick start of basic procedures, see the WPR How-to Topics. WPR can also be invoked and controlled by using the WPRControl application programming interface (API). Alternatively, you can author custom profiles in XML. WPR provides built-in profiles that you can use to select the events that are to be recorded. You can run WPR from the user interface (UI) or from the command line. WPR is a powerful recording tool that creates Event Tracing for Windows (ETW) recordings. Windows Performance Analyzer (WPA): Windows 8 or later with the Microsoft. Windows Performance Recorder (WPR): Windows 8 or later. The following are the system requirements for running Windows Performance Toolkit: All recordings must be opened and analyzed by using WPA. However, Xperfview is no longer supported. ![]() In addition, support is maintained for the previous command-line tool, Xperf. ![]() The Windows Performance Toolkit consists of two independent tools: Windows Performance Recorder (WPR) and Windows Performance Analyzer (WPA). ![]() This documentation discusses both Windows Performance Recorder (WPR) and Windows Performance Analyzer (WPA). In this case, HDAudBus.sys is using a constant 10.82% of my cpu via interrupts, which is exactly what Process Explorer was showing me.Included in the Windows Assessment and Deployment Kit, the Windows Performance Toolkit consists of performance monitoring tools that produce in-depth performance profiles of Windows operating systems and applications. This pointed right to the driver in question. Open the trace in Windows Performance Analyzer (part of Windows Performance Toolkit) some places mention using xperfview instead.Įxpand Computation -> CPU Usage (Sampled) -> DPC and ISR Usage by Module, Stack, right-click and add graph to analysis view Stop tracing / save the log xperf -d interrupt_trace.etl Note, you will need to close Process Monitor or any other app which uses ETW or you will get the following error: xperf: error: NT Kernel Logger: Cannot create a file when that file already exists. Or, using an elevated command prompt, navigate to the folder which contains it and use the command-line tool xperf: xperf -on base+interrupt+dpc I'm not sure when it first appeared, but seems to be built in on recent versions of Windows. The easiest way to do this is using the Windows Performance Recorder. After digging through the documentation (based on the other answers here), this is the process I ended up using: ![]()
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