Time synchronization method and device, electronic equipment and storage medium

Abstract

The embodiment of the invention discloses a time synchronization method and device, electronic equipment and a storage medium. The method comprises the following steps: sending a time synchronization message of a network time protocol (NTP) and receiving a response message of the time synchronization message; obtaining the time when the response message leaves the local machine, and calculating the time required by the response message from leaving the local machine to arriving at the client application process; and obtaining the correction time of the client according to the time when the response message leaves the local machine and the time required by the response message from leaving the local machine to reaching the application process of the client. Compared with the prior art, the time calculation range of sending the time synchronization message from the client to the server and sending the response message from the server to the client is narrowed; the influence of the random waiting time of the message from the kernel of the client and the server to the application on the transmission delay (the message has random delay from the kernel LOCALIN point to the application and from the application to the LOCALOUT point) is eliminated, so that the time synchronization precision is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of time synchronization, and in particular, to a time synchronization method, device, electronic equipment, and storage medium. Background technique [0002] With the continuous emergence of computer network applications, the problem of computer time synchronization becomes more and more important. Network Time Protocol (Network Time Protocol, NTP) is a protocol for synchronizing computer time, which is used for time synchronization between distributed time servers and clients. It can provide high-precision time correction, and can carry authentication codes for identity authentication and integrity protection to prevent malicious protocol attacks. The purpose of using NTP is to synchronize the clocks of all devices with clocks in the network, so that the clocks of all devices in the network are consistent, so that devices can provide multiple applications based on a unified time. [...

AI Technical Summary

Problems solved by technology

In the prior art, when synchronizing, the time of the NTP client is modified to: time at T2 + one-way transmission delay (the time D2 required for the NTP server to receive the response from the NTP server to receive the response, due to D2 cannot be obtained accurately, but D1+D2 can be calculated, and (D1+D2) / 2 can be used instead of D2). The premise of this client / server mode time synchronization method is that it is assumed that the request sent from the NTP client is received by the NTP server The time D1 and time D2 required by the request are equal. However, in fact, there is a difference between time D1 and time D2, and the accuracy of time synchronization depends on the degree to which time D1 and time D2 are equal. The closer time D1 and time D2 are, the better The higher the accuracy of time, the greater the deviation between time D1 and time D2, and the worse the accuracy of time synchronization

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