Cache management method and device

Abstract

The invention provides a cache management method, which comprises the steps of dividing a cache space into cache blocks and dividing each cache block into a plurality of small blocks, wherein the length of each cache block is smaller than maximum packet length; and dividing a data packet into a plurality of data blocks according the length of each small block and writing the divided data blocks into unoccupied small blocks one by one according to write cache large block address pointers corresponding to the cache blocks and in-block address pointers corresponding to the small blocks. The invention additionally provides a cache management device. By adopting the cache management method and the cache management device, the utilization ratio of cache resources can be improved and the cache management resources can be saved.

Description

technical field [0001] The invention relates to data cache technology, in particular to a cache management method and device. Background technique [0002] In logic design, it is often necessary to use dynamic random access memory (DRAM), static random access memory (SRAM) or field programmable gate array (FPGA) internal random access memory to cache data. How to manage the cache space is very important in logic design a link. Usually, buffer resources are managed in a first-in-first-out (FIFO) manner, that is, packets are sequentially stored in the FIFO queue, and then taken out sequentially from the FIFO queue. [0003] In order to meet the delay requirements, FIFO generally adopts the tail discarding mechanism, that is, after receiving the packet enqueue request, it first judges whether the FIFO has space to store a maximum packet, and if so, puts the received data packet into the cache; otherwise Just discard the packet. That is to say, as long as the remaining space ...

AI Technical Summary

Problems solved by technology

In this case, the buffer space of a certain channel will be used up, while other channels have free buffer space but cannot be used, which will also cause a waste of buffer space

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