XPERF, also known as Windows Performance Analyzer, ships as part of the Windows Performance Tools (WPT) kit. The latest WPT ships as part of the Windows SDK for Windows 7 and .NET Framework. The WPT consists of:
- XPERF – an interactive trace capturing tool used in this case to enable ETL tracing of a slow user logon clearly not caused by the background loading of the OS (that is, a slow boot).
- XBOOTMGR – enables ETL tracing, reboots the host computer then stops capturing N # of (default 120) seconds after user logon for 1) slow boot scenarios and 2) slow logons caused by delays in the OS boot process.
- XPERFVIEW – views ETL traces captured by XPERF or XPERFVIEW in a graphical format linked with rich numerical reports and stack traces data to drill into delays for impacted and root cause components and functions.
Source : social.technet.microsoft.com/wiki
