System time synchronization method and device

Abstract

The embodiment of the invention discloses a system time synchronization method and device. The method comprises the steps that a bottom drive module of a client assigns the sending time of an NTP (Network Time Protocol) request message to an origin timestamp T1 of the NTP request message; the bottom drive module of a server takes the time of receiving the NTP request message by the server as a receive timestamp T2; the bottom drive module of the server assigns the sending time of an NTP response message to a transmit timestamp T3 of the NTP response message; and the bottom drive module of the client takes the time of receiving the NTP response message by the client as a destination timestamp T4. It follows that according to the time in the timestamps, the time delay of transmitting the messages between an NTP module and the bottom drive modules is avoided, the consistency between the client time and the server time is improved, and the problem that the client system time oscillates continuously in a traffic instable environment is avoided.

Description

technical field [0001] The invention relates to the field of network technology, in particular to a method and device for synchronizing system time. Background technique [0002] Currently, the network usually uses NTP (Network Time Protocol, Network Time Protocol) to keep the system time of each device in the network consistent. For example: a network management system that needs to use time as a reference to analyze log information and debugging information collected from different devices; a billing system that requires device time consistency; multiple systems cooperate to process the same complex Event occasions, etc., all use NTP to keep the system time of each device in the network consistent. [0003] Suppose the current time of client A is 10:00:00am, and the time of server B is 11:00:00am. Client A needs to be set to the same time as server B. In the prior art, the following steps are applied to set the time of the client A (assuming the time required for the on...

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Problems solved by technology

[0012] Therefore, applying the above method to set the client's time does not guarantee the consistency between the client's time and the server's time. In an environment with unstable traffic, it is likely to cause the client's system time to fluctuate continuously.

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