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Linux thread scheduling method based on weighted average PIP
Author(s): ZHANG Zhi-yuan
Pages: 26-
28
Year: 2016
Issue:
2
Journal: Journal of Changsha Telecommunications and Technology Vocational College
Keyword: weighted average value; thread scheduling; priority inversion;
Abstract: In the Linux system, the problem of priority inversion may cause systems to crash. The execution time of the high priority task cannot be predicted because of priority inversion, and the uncertainty of the real-time system is increased. PIP (priority inheritance protocol) is a good solution to the priority inversion problem. In this paper, the idea of weighted average value, with PIP, forms a weighted average PIP algorithm, which can be used for thread scheduling, improving the real-time performance of the system.
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