The Memtime sample program is intended to be a demonstration of the advantages and disadvantages of various drawing methods. It runs a series of tests of memory bandwidth and displays a report.
Source: (SDK root)\Samples\Multimedia\DDraw\Src\MemTime
Executable: None.
Choose Time All from the main menu to begin the tests. Note that your screen will change resolution during the tests. It will also go blank for short periods of time.
The sample is not intended as an example of particular techniques in DirectDraw programming. Of more interest are the results of the memory tests.