Demand Paging - Disadvantages

Disadvantages

• Individual programs face extra latency when they access a page for the first time.
• Programs running on low-cost, low-power embedded systems may not have a memory management unit that supports page replacement.
• Memory management with page replacement algorithms becomes slightly more complex.
• Possible security risks, including vulnerability to timing attacks; see Percival 2005 Cache Missing for Fun and Profit (specifically the virtual memory attack in section 2).