A method for predictive migration of active memory during virtual machine migration

Abstract

The invention discloses a method for predicting and migrating active memory in the process of virtual machine migration, which belongs to the technical field of virtual machine migration. The method first records the address of the visited memory and the pre-recorded page set composed of the visited time recorded by the virtual machine manager. Use the method of six-tuple to represent each memory page for preprocessing, then calculate the priority weight of the memory page, and use the ISS-DBSCAN clustering algorithm for cluster analysis to determine the active memory range. Finally, the priority weight of the memory page is used as the basis for judging the priority, and the sending order of the active memory pages is adjusted. The method of the invention provides a theoretical basis and a method for active memory analysis, can effectively predict the activity degree of memory pages, and improve the efficiency of memory migration.

Description

technical field [0001] The invention relates to the technical field of virtual machine migration, in particular to a method for predicting and migrating active memory during virtual machine migration. Background technique [0002] With the generation of big data, today's world has entered an era of data explosion. Although the performance of computer hardware has developed rapidly, computing power is still the bottleneck of applications. Cloud computing constitutes a high-performance, high-utilization, high-reliability computing cluster by providing a configurable computing resource sharing pool. The scale is dynamically scalable, which brings infinite possibilities to computing and can satisfy the growing number of users. size and mission requirements. In order to achieve this unlimited computing power, cloud computing platforms need to provide completely isolated operating environments for different users, dynamically allocate massive computing resources and solve the pro...

AI Technical Summary

Problems solved by technology

The disadvantage of post-copy migration is that the memory of the virtual machine is not complete when it resumes running on the destination host, and page faults often occur due to access to memory pages that have not been migrated, causing the virtual machine to be suspended

There is a network delay between sending a page fault request to the host host and getting the missing page, resulting in a decline in the working performance of the virtual machine after recovery

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