Dynamic cache pollution prevention system and method

Abstract

The invention discloses a dynamic cache pollution prevention system and method and belongs to the field of the optimization technique of computer cache performance. The dynamic cache pollution prevention system comprises a memory monitoring module, an analyzing module and a decision distribution module. The memory monitoring module performs sampling and monitoring on heap memory dynamically allocated to an upper client layer program, collects memory access behaviors of the client layer program and submits the memory access behaviors to the analyzing module. The analyzing module analyzes data collected by the memory monitoring module and judges pollution conditions of memory access features on cache in the front period of the program. The decision distribution module extends the existing buddy system, adds a page management mechanism with page-color as the basis, separates memory page management from page mapping, and controls a mapping mode from a system logic page to a physical frame according to the analysis result of the analyzing module to effectively limit cache pollution.

Description

technical field [0001] The invention belongs to the technical field of computer cache performance optimization, and more specifically relates to a dynamic cache pollution prevention system and method. Background technique [0002] Cache memory (Cache) is a kind of RAM whose access speed is faster than general random access memory (RAM). Capacity storage. The scheduling and transmission of information between the cache memory and the main memory is automatically performed by the hardware, and the programmer does not feel the existence of the cache memory, so it is transparent to the programmer. [0003] During the development of computer technology, the access speed of the main memory has been much slower than the operating speed of the central processing unit, so that the high-speed processing capability of the central processing unit cannot be fully utilized, affecting the working efficiency of the entire computer system. At present, there are many methods to alleviate th...

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Problems solved by technology

[0007] In view of the defects of the prior art, the purpose of the present invention is to provide a dynamic cache pollution prevention system and method, aiming to solve the technical problems of excessive overhead, opacity and inability to dynamically adjust existing methods

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