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nMaj -- Major Page Fault Count
The number of major page faults that have occurred for a task. A
page fault occurs when a process attempts to read from or write
to a virtual page that is not currently present in its address
space. **A major page fault is when auxiliary storage access is
involved in making that page available.**
nMin -- Minor Page Fault count
The number of minor page faults that have occurred for a task. …