The AutoMark option specifies the number of milliseconds between the collection of Windows software performance counter events. Windows performance counters are specified in the WinCounter option.
Only one AutoMark option can be specified on the command line. Note that the WinCounter sampling interval specified by AutoMark is independent of the main sampling interval.
In this example, a sampling interval of 1000 milliseconds is set for two Windows performance counters.
VSPerfCmd.exe /Start:Trace /Output:TestApp.exe.vsp /WinCounter:"\Process(*)\% Processor Time" /WinCounter:"\ASP.NET\Pages/sec" /AutoMark:1000 VSPerfCmd.exe /Launch:TestApp.exe