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High speed data acquisition: Running a realtime process and a time‐shared system (UNIX) concurrently
Author(s) -
Harland David M.
Publication year - 1980
Publication title -
software: practice and experience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 70
eISSN - 1097-024X
pISSN - 0038-0644
DOI - 10.1002/spe.4380100404
Subject(s) - computer science , unix , sampling (signal processing) , process (computing) , operating system , real time computing , embedded system , software , filter (signal processing) , computer vision
A technique is outlined by which a normal time‐shared operating system may be modified to permit concurrent processing of a realtime data sampling operation and the typical time‐insensitive operations of the time‐shared system. Guidance is given regarding the implementation of such a proposal and it is discussed in relation to the UNIX operating system. It is pointed out that concurrent processing of a multi‐user time‐shared system and a single‐user time‐dependent sampling routine offers a more efficient use of the computer processor, when realtime sampling must be undertaken, while still offering a service to other users. Such a scheme may be an alternative to implementing a full‐scale realtime operating system for the exclusive use of the sampling operations.