Low-latency application oriented SATA interface data transmission method and system
A technology of SATA interface and data transmission method, which is applied in the field of SATA interface data transmission, can solve the problem of low perceived delay of application programs, and achieve the effect of low perceived delay
Pending Publication Date: 2022-07-08
湖南长城银河科技有限公司
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It solves the problem of prioritizing applications with different priorities in the existing interface transmission method to solve the problem of low application program perception delay, and divides the control channel and data channel to ensure that the bandwidth of the control channel is not occupied
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[0033] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.
[0034] The SATA interface data transmission method for low-latency applications provided by this application can be applied to, figure 1 in the application environment shown. Wherein, the host terminal 101 transmits with the device terminal 102 through the SATA interface protocol network. The host side uses the SATA interface application layer to transmit data mainly through two methods, PIO and DMA. The host side 101 may be a server or a computer; the device side 102 may be a storage device with a SATA interface.
[0035] In one embodiment, as figure 2As shown, a...
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The invention relates to a low-latency application oriented SATA (Serial Advanced Technology Attachment) interface data transmission method and system. According to the method, the SATA interface standard protocol function is expanded, FIS frames of a configuration register carry channels and priority parameters, scheduling operation between layers is facilitated, priority marking is carried out on transmission data, data channels are separated from configuration channels, the configuration channels are scheduled preferentially in the division of the two channels, and the configuration channels are scheduled preferentially in the division of the two channels. The scheduling of the data transmission in the data channel is performed according to the priority, so that the real-time performance of the configuration channel and the priority preemption mode are ensured, the high-priority data can be ensured to respond in time, and the high-priority application perceives that the transmission delay is reduced. By adopting the method, the application of different priorities is subjected to priority distinguishing in an SATA interface transmission mode, the problem of low time delay of application program perception can be solved, and the bandwidth of a control channel is ensured not to be occupied by dividing the control channel and a data channel.
Description
technical field [0001] The present application relates to the technical field of data transmission, and in particular, to a SATA interface data transmission method for low-latency applications. Background technique [0002] With the wide application of solid-state drives, SATA standard interface technology has replaced PATA technology and has become the new interface standard for hard drives. The SATA standard protocol defines the mode of communication between the host and the device. The interface mainly includes the application layer, the transport layer, the data link layer, and the physical layer. When the host and the device send and receive data, the host uses the instructions provided by the application layer to perform sending and receiving operations and perform instruction parsing, provide the processor with the operating status of the device, generate read and write requests for data, read and set the working mode of the device, and then Notify the transport laye...
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IPC IPC(8): G06F13/18G06F13/16
CPCG06F13/18G06F13/1678
Inventor 曾喜芳罗恒刘城伍玉良刘蓬侠
Owner 湖南长城银河科技有限公司