System and method for optimizing dispatch latency of tasks in a data processing system
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United States of America Patent
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Feb 1, 2000
Grant Date -
N/A
app pub date -
Apr 3, 1992
filing date -
Apr 3, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a system and method of enhancing efficiency in a data processing system having a processor, a memory, and a multitasking operating system for managing the processor and the memory. A normal and an expedited scheduling path are provided for scheduling tasks on the processor. The tasks are each assigned a priority for execution on the processor. A queue is provided for the placement of tasks ready for execution. Upon entry into the ready-to-run queue, the execution priority of the new task is compared to the execution priority of the executing task. Responsive to the new task holding a higher execution priority or to absence of an executing task, the expedited scheduling path is invoked. Otherwise the normal scheduling path is invoked.
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