Adjustment method and system for cache management strategy

Abstract

The invention discloses an adjustment method and an adjustment system for a cache management strategy. The method comprises the following steps of: dividing a cache into a working subsystem and a testing subsystem; dividing the testing subsystem into a plurality of test groups using different cache management strategies; acquiring access failure rate information of the test groups; judging whether the access failure rate information of each test group is between the preset access failure rate information upper limit value and the preset access failure rate information lower limit value according to a preset access failure rate judgement sequence; when the judgement shows that the access failure rate information of each test group is between the preset access failure rate information upper limit value and the preset access failure rate information lower limit value, taking the strategy used by the test group, the access failure rate information of which is between the access failure rate information upper limit value and the access failure rate information lower limit value, as a target cache management strategy for the working subsystem; and adjusting the cache management strategy adopted by the working subsystem according to a local preset adjustment strategy and a target cache management strategy.

Description

technical field [0001] The invention relates to the field of cache memory of computer processors, in particular to a method and system for adjusting a cache management strategy. Background technique [0002] Cache memory (Cache, also called high-speed cache) is one of the important components of computer processors, and it is a kind of memory whose storage speed is between registers and memory. Using the locality principle of program execution, store the data to be accessed in the cache as much as possible. When the processor needs data, it can submit the data to the processor with a small time delay, thereby reducing the memory access delay and improving Purpose of processor performance. [0003] Due to the small cache capacity, it is necessary to effectively manage the cache, and put the data required by the processor into the cache as much as possible, thereby reducing the probability of system memory access failure, reducing the cost of memory access, and improving the ...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a method and system for adjusting the cache management strategy, so as to solve the problem of system performance degradation caused by deviation between the decision-making mode of cache dynamic insertion strategy and the actual requirement of application access behavior in the prior art

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