User state file sending method, file receiving method and file sending and receiving device

Abstract

The invention discloses a file sending method, a file receiving method, and a file sending and receiving device in a user state. The file sending method includes: allocating a data reading and sending area, a data receiving and writing area, and a data buffer area in the user state area. Create a data sending process; Obtain the file to be sent corresponding to the data sending process from the data buffer area; Build the metadata of the data sending process, and record it in the data reading and sending area ; Sequentially process one or more metadata in the reading and sending area, wherein the processing of the metadata includes: sending the file to the network card through the user mode network device driver, and the file is sent by the network card issue. According to the technical solution of the present invention, the user state space of the data sending and receiving process is used to complete the receiving and sending of data, without using the kernel state space of the process to completely shield the kernel, which can significantly reduce copying, context switching, and interruption. Improved data sending and receiving performance.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a file sending method, a file receiving method and a file sending and receiving device in a user state. Background technique [0002] In recent years, NPU (embedded neural network processor), GPU (graphics processing unit), SSD (solid state drive), NVM (non-volatile memory), Infiniband (a "conversion cable" technology that supports multiple concurrent links) ), 400GbE (400G Ethernet) and other new high-performance hardware devices represented by computing, storage, and network have ushered in rapid development, but software systems have stagnated. In the long-distance data transmission, the delay of the software system accounts for an increasingly large proportion. [0003] Generally, the performance loss of a software system mainly comes from three aspects: [0004] (1) Copy (Copy). Also known as duplication, copy operations cause data redundancy and cause latency and ...

AI Technical Summary

Problems solved by technology

Typically, in the scenario where multiple clients send files to the same receiving end at high concurrency, the CPU at the receiving end is constantly busy with interrupts, repeatedly reserving the scene, and there are relatively few opportunities to actually process data, resulting in serious delays. was a disaster

[0007] In the process of sending and receiving files in the prior art, a large number of copying, context switching, and interruption are generated.

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