Data reading and writing method and device

Abstract

The embodiment of the invention discloses a method and a device for reading and writing data, which includes the following steps: a request is segmented according to the preset volume of a block data and the segmented request is stored into a block data queue; the weighted values of different block data queues meeting the time-sequential parameters are compared; the block data queue is dispatched according to the comparison result. The application of the method and the device of the embodiment of the invention can optimize the operation sequence on the whole, thus improving the cache efficiency more effectively.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a method and device for reading and writing data. Background technique [0002] In the data network, DRAM (Dynamic random access memory, dynamic random access memory) chips are usually used as data cache space. These chips have a common feature: a chip is divided into multiple data block banks, and a bank is divided into many rows. , when a row is read or written, the row needs to be activated first. Since it is not allowed to open different lines of a bank at the same time, when a bank has opened a certain line and needs to operate another line, the previously activated line must be closed, and then another line that needs to be operated must be activated, and then the other line can be read. write operation. There is a minimum time limit from activation to deactivation of a row, and other rows of the bank cannot be operated if the minimum time is not satisfied (referred t...

AI Technical Summary

Problems solved by technology

[0006] When the existing technology solves the problem that a certain time interval is required to access different rows of the same bank, the order of read and write operations of the bank is too strict and wastes storage space, and the read and write operations can only be optimized locally

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