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 ?
The compression store lives in the System process's working set. 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.
Unfortunately, working set shifts for a regular period does not result in the entitlement to continue to work those set days, unless these days are part of a written contract such as an employment contract or a written agreement with a manager who is authorised to agree to set shifts.
We have a forest service lookout, an operating steam-power sawmill, a Willamette locomotive and a working set of High Wheels.
This design will highlight the estimated benefits, potential vendors, proposed implementation scenarios and sequence of activities that will result in a working set of pilots.
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.
Unfortunately, the majority of existing working set methods do require the specification of the working set size.