Memory controller based bandwidth allocation method and apparatus

Abstract

Embodiments of the invention provide a memory controller based bandwidth allocation method and apparatus. The method comprises: when a time window ends, a centralized memory controller Meta-MC acquiring memory access request service information of at least one memory controller MC, wherein the time window length is a preset value, and the memory access request service information is memory access request service information of a first application on the MC; and the Meta-MC, according to the memory access request service information, adjusting a bandwidth radio of the first application on the MC in a next window. According to the method and apparatus provided by the embodiments of the invention, it is ensured that the degree of performance degradation of the first application is within a specified range, that is, QoS of the first application is ensured.

Description

technical field [0001] The embodiments of the present invention relate to computer technology, and in particular to a bandwidth allocation method and device based on a memory controller. Background technique [0002] With the development of multi-core processors, multiple memory controllers are integrated in the system or processor chip, wherein the memory controller is an important part of the computer system to control the memory and exchange data between the memory and the CPU. Since multiple applications running simultaneously on a multi-core processor will share the memory bandwidth, a reasonable bandwidth allocation scheme needs to be adopted to improve system throughput. [0003] Existing multi-memory controllers improve system throughput through request scheduling methods, optionally first periodically sorting the applications according to the service time each application obtains from the memory controller, and giving the service time in each cycle The application ...

AI Technical Summary

Problems solved by technology

However, in the prior art, each application is prioritized only according to the length of service time each application obtains from the memory controller, and the bandwidth allocated to the key application cannot be guaranteed, so that the quality of service (Quality of Service, Qos for short) of the key application cannot be guaranteed. )

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