An apparatus of a computing system, the computing system, a method to be performed at the apparatus, and a machine-readable storage medium. The apparatus includes control circuitry to: perform a page walk operation on a page table structure of a pooled memory; based on the page walk operation, determine page table entries (PTEs) corresponding to a workload to be executed by the computing system; and during a time interval not including a page walk operation by the control circuitry, perform a plurality of sampling operations, individual ones of the sampling operations including determining PTE metadata corresponding to at least some of the PTEs.