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A method and system for optimizing the CPU load rate of a transmission control unit

A transmission control and load rate technology, which is applied in program control design, multi-programming devices, instruments, etc., to reduce CPU load rate, avoid performance waste, and reduce calling frequency.

Active Publication Date: 2020-07-28
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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Problems solved by technology

[0005] The present invention provides a method and system for optimizing the CPU load rate of a gearbox control unit, which solves the problem in the prior art that when the CPU_Load of a gearbox control unit is high, only a gearbox control unit with a higher system clock can be replaced

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  • A method and system for optimizing the CPU load rate of a transmission control unit
  • A method and system for optimizing the CPU load rate of a transmission control unit
  • A method and system for optimizing the CPU load rate of a transmission control unit

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Embodiment Construction

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar parameters or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0041] The invention provides a method and system for optimizing the CPU load rate of a gearbox control unit, aiming at reducing the CPU load rate by optimizing the calling method of the I / O interface. For example, 1 ADC interface placed in 1ms task, CPU_load is a%. Placed in a 5ms task, the CPU_load is 0.2a%. In a 10ms task, the CPU_load is 0.1a%. The more execution times per unit time, the higher the CPU_load, that is, if a single interface is called multiple times in the same task, the CPU_load will increase exponentially. The inv...

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Abstract

The invention discloses a CPU load rate optimizing method and system of a gearbox control unit. The method comprises the steps that the frequency of each I / O interface of the gearbox control unit is defined through underlying software, and the execution frequency of a task to be executed is obtained; due to the fact that I / O interfaces of different frequencies are called according to the execution frequency of the task to be executed, the higher the execution frequency of the task is, the higher the frequency of the I / O interface called by the task is, so that the called I / O interfaces are optimized; the task with the higher execution frequency calls the I / O interface with the higher frequency, I / O interface performance waste is avoided, the phenomenon that the task with the high execution frequency frequently calls the I / O interfaces with the low frequency to meet the performance requirement is avoided, the phenomenon that a single I / O interface is repeatedly called in the same task is avoided, and the CPU load rate is effectively decreased.

Description

technical field [0001] The invention relates to the technical field of automobile manufacturing, in particular to a method and system for optimizing the CPU load rate of a gearbox control unit. Background technique [0002] The CPU load rate (CPU_load) indicates the internal load rate of the transmission control unit within a period of time, and this indicator can be used to reflect the resource occupation of the internal CPU of the transmission control unit. If the CPU_Load of the gearbox control unit is too high during the mass production stage of the gearbox, it will make it difficult to maintain the upper layer software of the gearbox control unit in the later stage, and may cause unpredictable errors during the software operation. The calculation method of CPU_load is the proportion of time that the gearbox control unit executes non-empty statements per unit time. [0003] CPU_Load is calculated based on utilization, which is the ratio of actual software execution time...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/50
CPCG06F9/505
Inventor 马培义朱成王烨徐瑞雪周沛泽张友皇
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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