what are page faults

March 4, 2011 at 09:47:28
Specs: Windows XP
In Windows Task Manager I see very large numbers for page faults and was wondering what the cause of this might be and how I can reduce or prevent them.

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March 4, 2011 at 10:18:45
what is the number of page faults?

a large amount of hard page faults indicate a lack of physcal RAM

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March 4, 2011 at 11:22:52
A pagefault is not a fault according to the generally accepted meaning. They are just a part of Windows internal memory management and need not concern most computer users. They are completely normal and cannot be eliminated.

There are two kinds of pagefaults, hard and soft. Hard pagefaults require disk access to resolve and will impair performance if excessive. More memory is normally the only solution.

Soft pagefaults do not require disk access and have little impact on performance unless the numbers are very high. These will normally be the large majority.

IMPORTANT: Task Manager makes no distinction between hard and soft pagefaults.

Some applications generate a large number of soft pagefaults with little effect on performance. Unless you are having a performance problem you shouldn't worry about them.

What are the actual numbers?

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