memory management


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Related to memory management: virtual memory

memory management

[′mem·rē ‚man·ij·mənt]
(computer science)
The allocation of computer storage in a multiprogramming system so as to maximize processing efficiency.
The collection of routines for placing, fetching, and removing pages or segments into or out of the main memory of a computer system.

memory management

(memory management, storage)
A collection of techniques for providing sufficient memory to one or more processes in a computer system, especially when the system does not have enough memory to satisfy all processes' requirements simultaneously. Techniques include swapping, paging and virtual memory. Memory management is usually performed mostly by a hardware memory management unit.

memory management

A variety of methods used to store and keep track of data and programs in memory and reclaim the space when no longer needed. Virtual memory is the most common memory management function in every computer (see virtual memory).

It Used to Be a Nightmare
In the days of the first PCs, memory management was a major consideration. The PC had more confusing memory types than any computer in history as its architecture was pushed, patched and expanded to meet the increasing demand for more capabilities. DOS, the operating system of the 1980s, was designed to address only one megabyte (1MB) of memory. Today, 2,000 times as much is entry level.

In the first decade of the PC, technicians had to deal with conventional memory, upper memory, high memory, extended memory and expanded memory in order to support growing applications. Countless books were written on PC memory management. There were even three-day courses on the subject. Eventually, subsequent versions of DOS, and especially Windows, added the necessary memory management functions to eliminate the manual, time-consuming task of figuring out how much memory should be reserved for this and how much for that. See memory allocation, garbage collection, memory protection, EMS, EMM and DOS memory manager.


Memory Allocation in a PC
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According to Bryan Chin, OnSpec product marketing manager, the proprietary xSil251 technology highlights OnSpec branding strategy to innovate the most advanced memory management controllers for OEMs needing to interface their products with new media that specify ever faster read/write speeds and larger memory capacities.
Occupying less than 100 kbytes of memory, OSE enhances reliability and availability by utilizing a processor's memory management unit to build a firewall between kernel and application processes.
the premier supplier of software for flash memory management and highly reliable file systems for embedded devices, announced today a new partnership to distribute high-reliability flash memory drivers to Arrow's North American customers.
OSEck's hard real-time response, memory management support, development tools and LINX IPC services greatly simplify the design, debugging, deployment and management of secure, high-availability telecom applications distributed across multiple cores, processors and operating systems.