Hard Faults

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Overview: Counts hard page faults over a time interval, as shown in the following screen shot.

screen shot of a graph showing the count of disk accesses required to retrieve memory pages

Graph Type: Event graph

Y-axis Units: Count of system hard faults

Required Flags: HARD_FAULTS

Events Captured: Hard fault events

Legend Description: Shows hard fault count

Graph Description: Hard faults occur when the operating system retrieves memory pages from disk rather than from the in-memory pages that the memory manager maintains.

For more information on this topic see Windows Internals by David A. Solomon and Mark E. Russinovich (4th edition, Microsoft Press, 2005).