Synchronous Optimal Scheduling System and Scheduling Method Based on Group Scheduling in Virtualization Environment

Abstract

The invention discloses a synchronization optimized dispatching system based on group dispatching in the virtualization environment. The synchronization optimized dispatching system comprises a VCPU initial mapping module, a Credit distribution module, a VCPU dispatching module, a Credit consumption module and a Credit historical statistics module, wherein the VCPU initial mapping module is in charge of mapping a VCPU to a PCPU operation queue; the Credit distribution module distributes S time slices to each VCPU of VMs according to weights; the VCPU dispatching module is in charge of dispatching a certain VCPU to a current PCPU operation queue within every time slice, and determining the particle size of VM group dispatching for operation of parallel loads according to the Credit historical statistics module so as to implement the group dispatching strategy; the Credit consumption module is in charge of updating a credit value of each VCPU after one time slice is operated completely; the Credit historical statistics module records the dispatching history of the VCPU with windows being K, and maintains the total operation time of loads of two types so as to provide the group particle size value needed by the VCPU dispatching module. The performance of the loads can be improved by fully utilizing the types of the loads, the utilization rate of a CPU is improved, and at the same time, energy consumption can be reduced.

Description

technical field [0001] The invention belongs to the field of computer multi-core virtualization scheduling, and more specifically relates to a group scheduling-based synchronous optimization scheduling system and scheduling method in a virtualization environment. Background technique [0002] In a virtualized environment, scheduling is divided into two layers: one is the internal process scheduling of the virtual machine (Virtual Machine, referred to as VM), and the other is the process scheduling of the virtual machine manager (Virtual Machine Manager, referred to as VMM). CPU, referred to as VCPU) scheduling. The scheduling of processes by the VM is basically transparent to the VMM. The VMM only judges whether the current VCPU can be scheduled according to whether there are tasks running in the current VCPU. Since the process running status information cannot be directly reflected to the VMM through the VCPU, it is easy to have an understanding gap between the scheduling ...

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Problems solved by technology

[0005] In view of the above defects or improvement needs of the prior art, the present invention provides a synchronous optimization scheduling system and scheduling method based on group scheduling in a virtualized environment, the purpose of which is to solve the technical problem of CPU fragmentation in the existing group scheduling

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