Low-energy-consumption method for updating mixed key accidental tasks with dynamic utilization rate

A dynamic update and utilization technology, applied in energy-saving computing, program startup/switching, multi-programming devices, etc., can solve problems such as fatal consequences, inability to use idle time, poor energy-saving effects, etc.
CN110308977AActive Publication Date: 2019-10-08HUAQIAO UNIVERSITY
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Patent Information

Authority / Receiving Office
CN Ā· China
Current Assignee / Owner
HUAQIAO UNIVERSITY
Publication Date
2019-10-08

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Abstract

The invention discloses a low-energy-consumption method for updating a mixed key accidental task with a dynamic utilization rate. The method comprises the following steps of scheduling a mixed key accidental task set gamma through a virtual deadline strategy; calculating the scheduling point of the optimal speed of the low-key-level accidental task and the optimal speed of the high-key-level accidental task at the mixed key accidental task, and dynamically updating the system utilization rate Utot; and according to the system utilization rate Utot, calculating the execution speeds of the low-key-level accidental task and the high-key-level accidental task. According to the present invention, through the dynamic utilization rate updating, the final execution speeds of the low-key-level accidental task and the high-key-level accidental task are calculated, so that the energy consumption of the system is effectively reduced.
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Description

technical field

[0001] The invention relates to low energy consumption real-time scheduling of a dynamic priority mixed key system, in particular to a low energy consumption method for dynamic utilization updating mixed key occasional tasks. Background technique

[0002] A hybrid critical system is an embedded real-time system that integrates multiple functions on one platform to meet actual needs, and has high requirements for energy consumption, cost, and volume. There are critical tasks and non-critical tasks in a mixed critical system, the critical tasks must be completed first, and the non-critical tasks must be completed as much as possible. Hybrid critical systems are widely used in aerospace, industrial manufacturing and other fields, and drones are a typical application of hybrid critical systems.

[0003] Sporadic task is a kind of important task in mixed critical system. The release time interval of sporadic task instance is not fixed, but the release time interv...

Claims

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