Data reading method and data reading system capable of relieving disk reading bottleneck

Abstract

The invention provides a data reading method and a data reading system capable of relieving disk reading bottle neck. The data reading method is used for processing P2P (peer to peer) type data requests of users through a network file sending server and includes: the step 101, a user sends a data block request to the network file sending server; the step 102, a prestored data block sequence which contains data blocks and is N times of the length of the data block requested by the user is stored into an internal memory from a disk by the network file sending server; and the step 103, the network file sending server hits the data blocks required by the user through the internal memory and sends the data blocks to the user, wherein the N is a positive integer larger than one. When the data block sequence stored in the internal memory is about to be extracted by the user, a predict data block on the disk is stored into the internal memory in advance in a disk reading free time by a prediction process. By the data reading method, each movement of a magnetic head is utilized sufficiently, reading frequency of the disk is reduced, and free time in IO (input / output) operation of the disk is utilized.

Description

technical field [0001] The invention relates to an algorithm for solving the problem of the disk IO bottleneck affecting service output flow caused by the high wa value of the CPU of the operating system caused by multi-threaded concurrent reading of multiple files. The CPU of the network file sending server in the application scenario where the protocol provides small block data sending services, the scheme of the present invention adopts a method and system for concurrently reading multiple files with multiple threads, that is, the present invention provides a data reading method that alleviates the bottleneck of disk reading. methods and systems for extraction. Background technique [0002] The network file sending server refers to the equipment used to provide data push service in the cache system, and the network file sending service refers to the service for Internet terminal users, which provides data sending services such as file download and video on demand through ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is, on the one hand, it can overcome the problem of over-frequency disk reading operation caused by frequent moving of the magnetic head when the network file sending server adopts multithreading to concurrently read multiple files; The problem of too much idle time for reading operations, thereby providing a method and system for multi-threaded concurrent reading of multiple files, that is, the present invention provides a method and system for data reading that alleviates disk reading bottlenecks

[0005] The technical scheme of the present invention can effectively solve the disk IO bottleneck problem caused when the network file sending server adopts multithreading to concurrently read multiple files

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