Virtual machine time synchronization method and device

Abstract

The invention discloses a virtual machine time synchronization method and device. The method comprises the steps that virtual PTP equipment and an interface function are added to a virtual machine; the virtual PTP equipment is used for reading and transmitting back the time of a physical host through the interface function; a time synchronization virtual machine of the physical host is used. According to the method and device, different virtual machines or different types of virtual machines can be subjected to time synchronization, and higher time synchronization accuracy can be achieved without needing hardware supporting.

Description

technical field [0001] The present invention relates to the field of virtualization, and more specifically, to a virtual machine time synchronization method and device. Background technique [0002] Virtualization technology is the foundation of cloud computing technology. As the business system continues to migrate to the cloud computing platform, related problems also follow. Among them, time consistency has a high impact on the business system. Time consistency is the prerequisite to ensure the normal and orderly development of all businesses. Time inconsistency will lead to disorder among multiple business systems and affect the normal operation of the entire system. [0003] The device in the virtualization technology is a virtual device, and there is no hardware RTC (real-time clock) device to realize time synchronization, which will cause the time in the virtual machine to be normal when the virtual machine starts, but as the virtual machine runs for a long time, the...

AI Technical Summary

Problems solved by technology

Time consistency is the premise to ensure the normal and orderly development of all businesses. Time inconsistency will lead to disorder among multiple business systems and affect the normal operation of the entire system.

[0003] The device in the virtualization technology is a virtual device, and there is no hardware RTC (real-time clock) device to realize time synchronization, which will cause the time in the virtual machine to be normal when the virtual machine starts, but as the virtual machine runs for a long time, the virtual machine time will Slower and slower, causing time inconsistencies

At present, there are two methods for realizing time synchronization: NTP (Network Time Protocol) and PTP (Precision Time Protocol). In the absence of hardware support in a virtualized environment, the time precision of NTP and PTP synchronization is the same, both at the millisecond level, so In the case of high time precision requirements, these two methods cannot meet the precision requirements

[0004] Aiming at the problem of low time accuracy due to the lack of clock synchronization in the virtualization environment in the prior art, there is no effective solution yet

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