Memory page
A memory page is a fixed-size block of virtual or physical memory or storage that is managed and mapped as a unit.
Rust in Action: Systems programming concepts and techniques
A page is a fixed-size block of virtual memory that is mapped as a unit to physical memory or secondary storage.
- How it is used
- Explains how virtual memory is organized while motivating inspection of a running program’s values.
- How deep it goes
- Defines page size and explains mapping efficiency, fragmentation, caching, and swapping without detailing page-table layouts.
- Examples
- Uses running-program value inspection as motivation and contrasts page-based translation with mapping every variable separately.
- What you can do after
- Evaluate/understand it by explaining why address translation groups memory into pages and why an inactive page may reside on disk.
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Latency
A page is a fixed-size block of virtual memory that the operating system maps independently to physical memory or storage.
- How it is used
- Explains how operating systems provide virtual memory while controlling physical allocation, placement, and storage residency.
- How deep it goes
- Defines page granularity, page tables, demand paging, faults, and swapping, but defers application controls to a later treatment.
- Examples
- Uses 4 KiB and 2 MiB pages, noncontiguous address mappings, process regions, and disk-backed pages as concrete examples.
- What you can do after
- Evaluate memory-access latency by relating virtual-page access to physical allocation, page faults, and disk residency.
Related concepts
- address spacepart of · An address space is the set or range of addresses recognized within a system or addressing scheme for identifying locations or entities.
- database pagecontrasts with · A database page is a fixed-size unit of physical storage containing rows or portions of rows from database objects.
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