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Showing posts from April, 2017

Using XPerf

XPerf comes with Windows SDK. You can get it from MSFT website. During installation there is an option to install just the performance tools should you want only perf tools and not the whole SDK.

To collect a trace from administrator command line:
Begin your workload.xperf -on base+cswitch+power -stackwalk Profile -f c:\kernel.etl  Let the workload execute for a while.
xperf -stop If you have previously created c:\merged.etl, delete it.xperf -merge c:\kernel.etl c:\merged.etl  Now, before you can view your trace in UI, setup your symbol path:
set _NT_SYMBOL_PATH=<path to PDB files>  You should now be all set to launch the viewer:
xperf c:\merged.etl (this launches the viewer)  On the UI, there are several different type of graphs for various measurements. From inside the Graph menu, you can enable these views:

CPU Usage by Process.
CPU Sampling by CPU.
Stack Counts by type.

Happy XPerf-ing!