The VSPerfCmd.exe Timer option sets the profiling event that is sampled to processor clock cycles and optionally changes the number of cycles in a sampling interval from the default of 10,000,000. On a 1MH (one megahertz) processor, 10,000,000 clock cycles is approximately 100 samples per second. The minimum number of cycles that can be specified is 50,000.
Timer can only be used when you use the sampling profiling method, and it can only be used in a command line that also contains the Launch or the Attach option.
By default, the profiler sampling event is set to processor clock cycles and the sampling interval is set to 10,000,000. The Timer, PF, Sys, and Counter options enable you to set the sampling event and the sampling interval. The GC option collects .NET memory data at each allocation and garbage collection event. Only one of these options can be specified on a command line.
The sampling event and the sampling interval can be set only in the first command line that contains a Launch or an Attach option.
This example demonstrates how to set the profiler sampling interval to 1,000,000 processor cycles.
VSPerfCmd.exe /Start:Sample /Output:TestApp.exe.vsp VSPerfCmd.exe /Launch:TestApp.exe /Timer:1000000