Page Faults/sec is the average number of pages faulted per second. It is measured in number of pages 
faulted per second because only one page is faulted in each fault operation, hence this is also equal 
to the number of page fault operations. This counter includes both hard faults (those that require 
disk access) and soft faults (where the faulted page is found elsewhere in physical memory.) Most 
processors can handle large numbers of soft faults without significant consequence. However, hard faults, 
which require disk access, can cause significant delays.