working set


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working set

[′wərk·iŋ ′set]
(computer science)
The smallest collection of instruction and data words of a given computer program which should be loaded into the main storage of a computer system so that efficient processing is possible.

working set

(architecture)
The set of all pages (in a paging virtual memory system) used by a process during some time interval.

As a result of locality of reference, the working set frequently consists of a relatively small fraction of a process's total virtual memory pages. While a process's entire working set is in physical memory the process will run without page faults. If the working set is too large for available physical memory, the process causes frequent page faults.

In a multitasking environment, information about which pages are in each process's working set allows the memory management system to improve CPU efficiency by prepaging (also called the working set model).

["Modern Operating Systems", Andrew S. Tanenbaum, pub. Prentice Hall, Inc. 1992].
References in periodicals archive ?
Since the system process holds the store in memory, its working set grows larger exactly when memory is being made available for other processes.
I am an EEN working in a public hospital and have been working set days for 10 years.
We have a forest service lookout, an operating steam-power sawmill, a Willamette locomotive and a working set of High Wheels.
Everyone with a working set of eyes can see that when drivers use handheld cell phones -- as opposed to one of the various technologies that allows them to talk hands-free -- their driving skills suffer.
So the new requirements offer school districts not only a chance to get a working set of standards and assessments done, but an opportunity for science to become an important subject again.
IF YOUR car's covers are tyred out, you could win a set of new ones - because Goodyear are offering a set of tyres to anyone who can prove they have the oldest working set of Goodyears in the UK.
The objective of this research was the development of efficient, microcomputerbased working set procedures for full-time (FT) and mixed-workforce (MOO) tour scheduling in a discontinuous (less than 24 hours/day) environment.
Each time a minor change is made to a file, a completely new version is created, resulting in an explosion of stored content when only a working set of data is required.
Although still used as a working set - producers recently converted its Western town to evoke a 1930s era California village - the public still has full access to the land and its surrounding trails.
Over time, this collection will be expanded and modified to provide a working set of molecules that will target larger domains of "biological space," which represents all of the biomolecular surface domains that can potentially interact with a small molecule.
We were able to produce a working set of drawings very quickly," Rodon-Hornof said, adding that his firm can create and deliver a broader range of presentation documents because they are all generated from a single Revit model.
It is efficient and cost effective to separate the critical working set of data from historical, archival and reference data.