Load balancing method under virtual environment

Abstract

The invention discloses a load balancing method under a virtual environment. The load balancing method comprises the following steps of: judging a preset network card interrupt scheduling parameter changes when network card interrupt reaches, and if so, acquiring a sum M of current network card queues, a sum N of physical processors, interrupt loads on the physical processors, a number L of virtual processors in a virtual machine and a number K of virtual processors in a driving region; applying L annular queues and event channels for the front end of network card equipment of the virtual machine and the rear end of the network card equipment; judging whether N is more than M, and if the N is more than the M, binding M network card queues into the first M of the N physical processors in sequence by utilizing expanded message interrupt; processing the network card interrupt by the physical processors bound by the network card queues with network card interrupt; and forwarding a data packet corresponding to the network card interrupt to the rear end of the network card equipment. According to the load balancing method disclosed by the invention, problems of reduced network throughput rate and prolonged response time caused by a manner that high-load network I / O (Input / Output) is concentratedly processed in the single virtual processor under the virtual condition are avoided.

Description

technical field [0001] The invention belongs to the field of load balancing in a virtualized environment, and more specifically, the invention relates to a load balancing method in a virtualized environment. Background technique [0002] In the case of virtualization, load balancing includes load balancing of virtual processor scheduling and load balancing of different device interruptions. The load balancing of virtual processor scheduling adopts the "stealing" method. When the virtual processor queue corresponding to the current physical processor is empty, the load balancing policy will transfer the virtual processors to be run in the queue to the virtual processor queues of adjacent physical processors. Migrate to own virtual processor queue. The load balancing of different devices can realize that the interrupts of different devices are bound to different physical processors for processing. [0003] However, existing load balancing methods have the following problems:...

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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that network I / O is concentrated on a single virtual processor for processing under virtualization, resulting in frequent migration of virtual processors and frequent interruption of single connection processing, which eventually leads to a decrease in network device I / O processing time. Long, and the problem of decreased network throughput

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