Boots – shoes – and leggings
Patent
1985-12-11
1990-03-13
Shaw, Gareth D.
Boots, shoes, and leggings
364281, 3642818, 3642843, G06F 1516
Patent
active
049087509
ABSTRACT:
A tunable operating system in a multiprogrammed data processing system provides improved throughput of tasks blocking on inter-task message requests before time-slice runout. A ready queue subset is defined for each task; the queue subsets for different tasks are overlapped by at least one queue. Dispatch priority is improved when a task requests inter-task message service before time-slice runout, and worsened when a task runs out the time slice. The task is dispatched from a queue in its subset corresponding to the dispatch priority. One of a plurality of time-slice values is assigned when a task is dispatched; the time-slice values are assigned with respect to the position of the task within its queue subset and therefore are not fixed with respect to each queue. The operating system sets the timer to await completion of a full time slice upon each dispatch. In a further improvement, actuation of a designated key at a workstation causes the associated task to be scheduled in a high priority ready queue within its queue subset, providing prompt response despite recent CPU bound behavior of the task of heavy system load.
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Eakman Christina M.
Shanahan Michael H.
Shaw Gareth D.
Wang Laboratories, Inc.
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