Virtual machine dispatching algorithm based on task load and current work property of virtual machine

Abstract

The invention discloses a virtual machine dispatching algorithm based on a task load and the current work property of a virtual machine, wherein an interruption monitoring module is in charge of monitoring the current interruption frequency of the virtual machine, and is used for judging whether the work property of the virtual machine is in a CPU (central processing unit) dense type or I / O (input / output) dense type. A CPU monitoring module is in charge of monitoring the current CPU use rate of the virtual machine and is used for monitoring the task load of the virtual machine, a dispatching time segment of the virtual machine is calculated according to the current task load and the historical information in a certain time range, and in addition, a dispatcher is informed to update the time segment. A dispatcher module modifies a credit value dispatcher, so that the dispatcher interrupts the information provided by the monitoring module and the CPU monitoring module, different dispatching time segments are applied to the virtual machines with different work properties, the I / O request delay is reduced, meanwhile, the sufficient time is provided for handling the I / O request, and in addition, lower additional overhead is introduced. The modification of the three modules respectively occurs in the virtual machine monitor, so that good applicability is realized.

Description

technical field [0001] The invention relates to the fields of system virtualization, virtual machine interruption detection, virtual machine CPU usage detection and virtual machine scheduler design. Specifically, it involves a virtual machine scheduling algorithm based on the current working nature and task load of the virtual machine, which is used to solve the I / O response delay caused by the design flaw of the virtual machine scheduler, the inability to dynamically adapt to changes in the virtual machine load, and poor I / O performance. low problem. Background technique [0002] Virtualization technology has existed in various forms for more than 50 years. Abstractly speaking, virtualization is a logical representation of various available resources, which may not be limited by physical conditions. Specifically, virtualization technology adds a layer of virtualization to the system, which can abstract the physical resources of the lower layer into virtual resources for u...

AI Technical Summary

Problems solved by technology

[0007] To sum up, the traditional scheduler has the problem of large I / O response delay. Although the methods proposed in the existing research can reduce the delay to a certain extent, they cannot adapt to the dynamic changes of the virtual machine load and do not consider Providing sufficient time for I / O requests to process also affects the performance of I / O requests

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