Hard Faults?

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tehfire
Posts: 530
Joined: Mon Jan 01, 2007 9:57 am
Location: US

Hard Faults?

Post by tehfire » Sat Aug 04, 2007 9:36 pm

Under the Vista resource monitor, it has a Memory tab and it displays something called Hard Faults/sec. What's a hard fault? Doesn't sound too good...

Tried wikiing it, but to no avail

Slaugh
Posts: 774
Joined: Thu Dec 02, 2004 2:27 am
Location: Quebec, Canada

Post by Slaugh » Sat Aug 04, 2007 11:24 pm

From another thread:
A hard fault (also known as a page fault) occurs when the page of the referenced address is no longer in physical memory and has been swapped out or is available from a backing file on disk. It is not an error. However, a high number of hard faults may explain the slow response time of an application if it must continually read data back from disk rather than from physical memory.
From Wikipedia:
Major page fault

If the page is not loaded in memory at the time the fault is generated, then it is called a major or hard page fault. Major faults are more expensive than minor page faults and add disk latency to the interrupted program's execution. This is the mechanism used by an operating system to increase the amount of program memory available on demand. The operating system delays loading parts of the program from disk until the program attempts to use it and the page fault is generated.
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