System for dynamically adjusting memories of virtual machines

Abstract

The invention provides a system for dynamically adjusting memories of virtual machines. The system comprises N servers and a memory management and distribution platform; each server is communicated with the memory management and distribution platform through a respective network communication interface; N virtual machines and a memory adjusting module are constructed on each server; a memory acquisition module is established in each virtual machine and used for acquiring the practical use value of the memory belonging to the virtual machine in the present moment in a timed manner and transferring the practical use value of the memory to the memory management and distribution platform through a virtual serial interface; the memory management and distribution platform judges whether the memory distribution condition of the special virtual machine is necessary to adjust or not according to a pre-set memory management strategy; if the memory distribution condition of the special virtual machine is necessary to adjust, the numerical value of the memory to be adjusted is calculated; and a memory adjustment instruction is generated and sent to the special server where the special virtual machine is. The memory distribution conditions of all the virtual machines on the plurality of servers can be dynamically adjusted in real time in the same operation environment; and thus, the resource utilization rate of the whole system is increased.

Description

technical field [0001] The invention belongs to the technical field of computer networks, and in particular relates to a dynamic adjustment system of virtual machine memory. Background technique [0002] Virtualization technology usually refers to the virtualization of multiple independent virtual machines on a single host, and each virtual machine (Virtual Machine) is a complete computer system with complete hardware system functions and running in a completely isolated environment. Due to virtual Modernization technology can greatly improve resource utilization, and has the advantages of convenient management and upgrading of system resources, and can provide a mutually isolated, safe and efficient application execution environment. It has been widely used in various technical fields. [0003] However, in the prior art, when a virtual machine is created on a host, it is necessary to allocate a fixed memory for the virtual machine at the time of creation, and each virtual m...

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Problems solved by technology

[0003] However, in the prior art, when a virtual machine is created on a host, it is necessary to allocate a fixed memory for the virtual machine at the time of creation, and each virtual machine also occupies the fixed memory during operation. This fixed memory allocation method has the following disadvantages: Since the demand for memory resources of a virtual machine changes dynamically during operation, for example, at a certain moment, if the memory resources required by the virtual machine are less than the initially allocated memory resources, this situation will lead to waste of memory resources on the host, reducing The number of virtual machines that the host can support; at another moment, if the memory resource that the virtual machine needs to use is greater than the memory resource initially allocated, it will reduce the running performance of the virtual machine, and even cause the virtual machine to freeze

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