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Event tracing in its simplest form uses the system Event Log
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(Computer Management, Event Viewer).
A more complex use is WPA/WPR Windows Performance Recorder and Analyser, available on the Windows Performance Toolkit https://learn.microsoft.com/en-us/windows-hardware/test/wpt/
Download Windows Performance Toolkit
Note: You can download the Windows Performance Toolkit through https://learn.microsoft.com/en-gb/windows-hardware/get-started/adk-install.
Do not forget to read What's new in the Windows ADK and ADK tools | Microsoft Learn article for more details.
Architecture
A driver which produces such logs is registered with the system with an xml XML file, which identifies the source of the logs, and the form they take (data types), names, and other details.
The xml XML file is in the project Resource Files folder.
The xml XML is processed by the Message Compiler by adding this to the project file in each ItemDefinitionGroup (ie, Debug|ARM64 and Release|ARM64)
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LANGUAGE 0x9,0x1 1 11 "Wperf_DriverETW_schema_MSG00001.bin" 1 WEVT_TEMPLATE "Wperf_driverETW_schemaTEMP.BIN" |
Registering
This xml XML file is copied with the driver to the system32\drivers directory, and needs to be registered with the system on install with wevtutil.exe im Wperf_DriverETW_schema.xml from the drivers directory.
To unregister call wevtutil.exe um Wperf_DriverETW_schema.xml.
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Running traces for PMU counters
…WPR PMU sources on Volterra using wpr -pmcsources
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Maximum selectable profile sources: 5.
Id Name Interval Min Max
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0 Timer 10000 1221 1000000
2 TotalIssues 65536 4096 2147483647
8 DcacheMisses 65536 4096 2147483647
9 IcacheMisses 65536 4096 2147483647
11 BranchMispredictions 65536 4096 2147483647
19 TotalCycles 65536 4096 2147483647
21 DcacheAccesses 65536 4096 2147483647
25 SoftwareIncrement 65536 4096 2147483647
26 ICacheRefill 65536 4096 2147483647
27 InstructionTLBRefill 65536 4096 2147483647
28 DCacheRefill 65536 4096 2147483647
29 DCacheAccess 65536 4096 2147483647
30 MemoryTLBRefill 65536 4096 2147483647
33 InstructionRetired 65536 4096 2147483647
34 ExceptionTaken 65536 4096 2147483647
35 ExceptionReturn 65536 4096 2147483647
36 WriteContextID 65536 4096 2147483647
41 BranchMisprediction 65536 4096 2147483647
42 CycleCount 65536 4096 2147483647
43 BranchPrediction 65536 4096 2147483647
64 L2DCacheRefill 65536 4096 2147483647
65 L2DCacheAccess 65536 4096 2147483647
66 L1ICacheAccess 65536 4096 2147483647
67 BusCycles 65536 4096 2147483647
70 L3CacheAccess 65536 4096 2147483647
71 L3CacheRefill 65536 4096 2147483647 |
Counter allocation
Xperf does not support multiplexing as on Volterra the following command xperf -on proc_thread+loader+cswitch+dpc+interrupt+pmc_profile -pmcprofile instructionretired,dcachemisses,branchprediction,timer,totalcycles,buscycles -f kernel_03.etl -stackwalk pmcinterrupt returns
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PS C:\Users\tcwg> xperf -on proc_thread+loader+cswitch+dpc+interrupt+pmc_profile -pmcprofile instructionretired,dcachemisses,branchprediction,timer,totalcycles,buscycles -f kernel_03.etl -stackwalk pmcinterrupt
xperf: error: Failed to configure counters |
References
Recording Hardware Performance (PMU) Events | Microsoft Learn
Using the Windows Performance Toolkit (WPT) with WDF - Windows drivers | Microsoft Learn
Writing an Instrumentation Manifest - Win32 apps | Microsoft Learn
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