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Example 15 Measuring DPC/ISR Time - Windows drivers ...
https://docs.microsoft.com/en-us/windows-hardware/drivers/devtest/example-15--measuring-dpc-isr-time#:~:text=%20Example%2015%3A%20Measuring%20DPC%2FISR%20Time%20%201,make%20the%20driver%20perform%20its%20functions.%20See%20More.
Example 15 Measuring DPC/ISR Time - Windows drivers
https://docs.microsoft.com/en-us/windows-hardware/drivers/devtest/example-15--measuring-dpc-isr-time
Start kernel tracing of DPC/ISR events. Monitor the trace session for events lost and, if necessary, increase the size of the trace buffers. Exercise the test driver. Stop the trace session. Use Tracerpt to generate a report that summarizes DPC/ISR activity. Analyze the reports. Step 1: Start a trace session.
Simple way to trace DPCs and ISRs - guru3D Forums
https://forums.guru3d.com/threads/simple-way-to-trace-dpcs-and-isrs.423884/
Return to command prompt to stop the trace and to save the trace file: Code: xperf -d c:\temp\trace.etl. Choose your own path and name for that trace file. 5. Generate the text report file for DPCs...
Survey of Software Tracing Tools - Windows drivers
https://docs.microsoft.com/en-us/windows-hardware/drivers/devtest/survey-of-software-tracing-tools
Analyzing DPC and ISR execution times. On Windows XP with Service Pack 2 (SP2) and later, you can use Tracelog to log deferred procedure call (DPC) and interrupt service routine (ISR) events in the NT Kernel Logger trace session and then use Tracerpt to create summary reports from the logs. For more information about how to use this tool, including an example, …
M17x-DPC/ISR tracing | Page 3 | NotebookReview
http://forum.notebookreview.com/threads/m17x-dpc-isr-tracing.461247/page-3
M17x-DPC/ISR tracing. Discussion in 'Alienware' started by stamatisx, Feb 20, 2010. Thread Status: ... Microsoft set the threshold at 100μs for the driver's DPC state . Others could set it even lower. For me and the tasks I have to perform on this machine, latency as it is right now is not a problem since it does not affect my work any ...
M17x-DPC/ISR tracing | Page 13 | NotebookReview
http://forum.notebookreview.com/threads/m17x-dpc-isr-tracing.461247/page-13
M17x-DPC/ISR tracing. Discussion in 'Alienware' started by stamatisx, Feb 20, 2010. Thread Status: ... The DPC latency checker still gives spikes, but no stuttering whatsoever, just some "cracks and pops" while powermizer does its …
M17x-DPC/ISR tracing | Page 10 | NotebookReview
http://forum.notebookreview.com/threads/m17x-dpc-isr-tracing.461247/page-10
M17x-DPC/ISR tracing. Discussion in 'Alienware' started by stamatisx, Feb 20, 2010. Thread Status: Not open for further replies. Page 10 of 22 < Prev 1 ...
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CPU Analysis | Microsoft Docs
https://docs.microsoft.com/en-us/windows-hardware/test/wpt/cpu-analysis
Figure 16 DPC/ISR Diagram. Figure 16 DPC/ISR Diagram describes data that was collected during the following activities: DPC/ISR-A starts to run. A device interrupt that has a higher interrupt level than DPC/ISR-A causes ISR-B to interrupt DPC/ISR A, thereby ending the first fragment of DPC/ISR-A. ISR-B completes and thereby ends the fragment of ISR-B.
How can I find out what is causing interrupts on Windows?
https://serverfault.com/questions/104131/how-can-i-find-out-what-is-causing-interrupts-on-windows
Stop tracing / save the log. xperf -d interrupt_trace.etl Open the trace in Windows Performance Analyzer (part of Windows Performance Toolkit); some places mention using xperfview instead. Expand Computation-> CPU Usage (Sampled)-> DPC and ISR Usage by Module, Stack, right-click and add graph to analysis view. This pointed right to the driver in question.
Wtrace 2.2 – lowleveldesign.org
https://lowleveldesign.org/2017/10/25/wtrace-2-2/
Driver tracing (ISR/DPC) If you use the -s switch during your trace, wtrace will also collect events measuring the time drivers spent in Interrupt Service Routines (ISRs) and Deferred Procedure Calls (DPCs). At the end of the trace, they will appear in the summary section, grouped by the driver name.
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