What is paging disk utilization?

Paging disk utilization refers to the extent to which a system's disk space is used for paging, a memory management scheme that eliminates the need for contiguous allocation of physical memory. When the system runs out of RAM, it uses disk space to store inactive pages from memory, swapping them in and out as needed. High paging disk utilization can indicate insufficient physical memory, leading to slower system performance due to increased read/write operations on the disk. Monitoring this metric helps in optimizing memory usage and ensuring efficient system performance.