How To: Use Xperf

This is Syed Aslam Basha here from Relationship experience division (RXD) team.

You can use Xperf tool to capture trace and narrow down exact processes/operation which is causing performance issue like CPU usage, disk utilization by process, File I/O Types, processes usage and etc.

 

Example: To trace disk IO and CPU usage run the following trace command

E:\xperf>Xperf.exe -START -on FileIO+CSWITCH+DISK_IO_INIT+PROFILE+FILENAME+DRIVERS+NETWORKTRACE+DPC+INTERRUPT+Latency -stackwalk CSwitch+DiskReadInit+DiskWriteInit+DiskFlushInit+FileCreate+FileCleanup+FileClose+FileRead+FileWrite+FileFlush+profile -f E:\xperfresults\GSdiskio.etl -BufferSize 1024 -MaxBuffers 1024 -MaxFile 1024 -FileMode Circular

 

Run the performance scripts.

Stop tracing.

E:\xperf>xperf -stop

GSdiskio.etl is the trace file name open the trace file using xperfview.exe and analyze the results.

 

GSDISKIOPERFRESULTS1

GSDISKIOPERFRESULTS2

 

For more information refer the http://msdn.microsoft.com/en-us/performance/cc709422 

http://msdn.microsoft.com/en-us/performance/cc825801.aspx

 

- Syed Aslam Basha ( syedab@microsoft.com )

Relationship experience division (RXD) Team

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