Memory scheduling method and memory scheduling device for multi-core processor

Abstract

The invention discloses a memory scheduling method and a memory scheduling device for a multi-core processor. The memory scheduling method comprises the following steps of: distributing initialized memory blocks for each processor core according to memory configuration information, wherein the memory configuration information comprises information of a plurality of initialized memory blocks and aplurality of elastic memory blocks which is obtained by dividing a physical memory; for each processor core, monitoring residual quantity of the memory of the processor core; when the residual quantity of the memory is determined to be lower than a first set threshold, distributing the undistributed elastic memory blocks to the processor cores; and monitoring service conditions of the distributedelastic memory blocks and releasing the distributed elastic memory blocks when a first setting condition is met. According to the memory scheduling method and the memory scheduling device disclosed by the invention, the distribution dynamic of the memory is better; the requirement for newly-added memory caused by application change can be met; and the integral utilization rate of the memory is effectively improved.

Description

technical field [0001] The invention relates to multi-core processing technology, in particular to a memory scheduling method and device applied to multi-core processors. Background technique [0002] An important mode of multi-core processors is an asymmetric heterogeneous system. Each processor core runs a set of operating systems, and each operating system manages all its own physical resources. Memory is one of the most important physical resources in heterogeneous systems. The allocation in is very important. The current memory allocation mainly adopts static allocation, such as figure 1 As shown, by dividing the physical memory according to the number of processor cores, and then allocating them to the operating systems on different processor cores for management, the number of divided memory blocks is usually equal to the number of processor cores, and each processor The kernel allocates a block of memory. [0003] Due to the use of static allocation to allocate mem...

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Problems solved by technology

[0005] 1) Strict allocation according to needs cannot be achieved, and it is more based on the experience of planners, and the effectiveness of allocation is insufficient;

[0006] 2) The static allocation method is often planned according to the current demand. Once the application and business model change, the original plan cannot meet the demand and needs to be re-planned and adjusted, which has a great impact on system stability.

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