Page Faults/s

Amount of virtual memory page faults in a second. This value is the rate of page faults occurring in the threads executing in the system. A page fault occurs when a thread refers to a virtual memory page that is not in its working set in physical memory. This will not cause the page to be fetched from disk if it is in use by another process with which the page is shared; or it is accessed for the first time after allocation (this always causes page fault û it is normal).