PPT Slide
Load Control
- Another idea is to prepage in parts of a process that are expected to be used right away.
- Rather than using a demand paging scheme, where pages are brought in as they are used, prepaging of pages from a swapped-out process can eliminate the initial flurry of page faults as the resident set re-establishes itself.
Large Page Tables
- Assume a 32-bit address space.
- Assume 4 KB pages. This partitions the 32 bits into 20 bits for a page number and 12 bits for the offset.
- Assuming a PTE takes 4 bytes, this would require a 4 MB page table per process (220 * 4)!