This section describes the RCDRKD debugger extension commands. These commands display WPP trace messages created by drivers. Starting with Windows 8, you no longer need a separate trace message format (TMF) file to parse WPP messages. The TMF information is stored in the regular symbol file (PDB file). Also starting in Windows 8, drivers can use the WPP Recorder API to write trace messages to a circular buffer that is always available, regardless of whether WPP tracing has been explicitly enabled for the driver. The RCDRKD commands read messages from the circular buffers, format the messages, and display the messages in the debugger. For more information, see Part 2 of the USB Debugging Innovations in Windows 8 video.
The RCDRKD debugger extension commands are implemented in Rcdrkd.dll. To load the RCDRKD commands, enter .load rcdrkd.dll in the debugger.
The following two commands are the primary commands for displaying trace messages.
The following auxiliary commands provide services related to displaying and saving trace messages.
The !rcdrkd.rcdrhelp displays help for the RCDRKD commands in the debugger.