This read-only integer reports the number of minor page faults per second system-wide, faults resolved by transferring a page from elsewhere in memory rather than from disk. An admin treats a high minor-fault rate as generally benign since it doesn't involve disk I/O, unlike major faults, though a sudden large increase can still indicate memory-mapping churn from an application. For example, an admin comparing minor and major fault rates during a performance investigation would use a high minor-fault-only rate to rule out disk-related causes of the observed slowdown.