Method and device for increasing UDP transmission efficiency

Abstract

The invention discloses a method and a device for increasing the UDP transmission efficiency; the method comprises the following steps of: a new driver provides a memory area for an application; wherein the memory area is self-maintained and can be directly operated by an application layer; the application writes data to the memory area and informs the driver of a subsystem the length of a packet; a kernel daemon process obtains the length of the packet after timing arrives and sends the packet when judging that the length of the packet is not zero. The method and the device of the invention can realize the zero-copy from the application to the memory data. Frequency application and the memory resources release are not needed, thus eliminating the consumption of a system brought about by the technical scheme of the prior art, decreasing the generation of the memory fragmentation in the system and the time of the CPU awaiting for accessing the memory and increasing the utilization efficiency of the CPU.

Description

technical field [0001] The invention belongs to the technical field of multimedia communication, and in particular relates to a method and a device for enabling multimedia terminal equipment to realize UDP (User Datagram Protocol, User Datagram Protocol) high-speed transmission. Background technique [0002] With the rapid development of network broadband, there are more and more application scenarios using multimedia data broadband services, such as Global Eye, IPTV (Internet Protocol Television, Internet TV) and so on. For the embedded terminal multimedia industry environment, using UDP to carry the transmission of multimedia data has become the first choice for design. [0003] However, the current UDP sending method has the following problems: [0004] 1. At least one memory copy of the data is required from the application layer to the kernel layer. The frequency of the memory cannot keep up with the frequency of the CPU itself. At this time, the CPU can only wait for ...

AI Technical Summary

Problems solved by technology

[0004] 1. At least one memory copy of the data is required from the application layer to the kernel layer. The frequency of the memory cannot keep up with the frequency of the CPU itself. At this time, the CPU can only wait for idling;

[0005] 2. During the process of data transmission, the system resources are continuously applied for and released, and there is system consumption during the repeated actions of the application. This action will also lead to the intensification of system memory fragmentation

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