Data caching system and method

A data cache, data technology, applied in memory systems, electrical digital data processing, instruments, etc.

Active Publication Date: 2018-08-03
WARECONN TECH SERVICE (TIANJIN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these algorithms are deficient because they cache the most recently used content rather than the most frequently used content

Method used

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  • Data caching system and method

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Experimental program
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Embodiment Construction

[0014] see figure 1 , is a system architecture diagram of a cache memory management system in a preferred embodiment of the present invention. The cache memory management system 10 is a programmable system running on a processor. The processor is connected with a cache memory 30 and a central processing unit CPU20. The cache memory 30 couples the cache memory management system 10 to a main memory 40 .

[0015] The cache memory management system 10 receives a read instruction from the CPU 20 , reads data from the cache memory 30 when there is a cache hit, and reads data from the main memory 40 when there is a cache miss, and stores the read data into the cache memory 30 .

[0016] The data in the cache memory management system 10 is marked with a weight value, and the weight value is used to represent the number of times the data is read in the cache memory 30 . The data in the cache memory 30 has 5 states as follows: the data with a weight value greater than 2 is considered...

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Abstract

The invention provides a data cache system and method. The system is connected with a cache memory and a central processing unit CPU, and the data in the cache memory is marked with a weight value, which is used to represent the number of times the data is read in the cache memory. The system includes: a receiving module, used to receive the read data request sent by the CPU; a read module, used to read the corresponding data according to the read data request; a weight value calculation module, used for cache hit The weight value of the data read in the cache memory is increased by 1. When the space of the cache memory is full, the data with a weight value of zero will be randomly selected for replacement when the cache memory needs to be replaced next time. The data caching system and method of the present invention caches the most frequently used content in the cache memory instead of the recently used content, so that it is more rapid and effective to determine the content to be replaced in the cache memory.

Description

technical field [0001] The invention relates to a data cache system and method, in particular to a data cache system and method for reading the most frequently used content in a cache memory. Background technique [0002] When a data read request is received, the reading speed of the cache memory is relatively fast, so data is first read from the cache memory. If the required read content is already in the cache memory, it is called "cache hit". If the required read content is not in the cache memory, it is called "cache miss". When a cache miss occurs, it is necessary to read content from the main memory and store the read content in the cache memory to improve the speed of next reading. Since the cache memory (cache) memory is usually smaller than the main memory they are coupled to, if the cache memory space is full, it is necessary to replace part of the content in time. At this time, a replacement algorithm needs to be used to determine which of the cache memory shoul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/122G06F12/121
Inventor 郑祥廷
Owner WARECONN TECH SERVICE (TIANJIN) CO LTD
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