Method and system for dynamically adjusting virtual-machine memory in cloud computing environment

Abstract

The invention discloses a method and a system for dynamically adjusting virtual-machine memory in a cloud computing environment. The method includes formulating a dynamic memory adjusting strategy; monitoring operational state of a virtual machine in real time, and acquiring memory using quantity of the virtual machine; judging whether the memory using quantity is larger than an upper-limit threshold value of the dynamic memory adjusting strategy or smaller than a lower-limit threshold value of the dynamic memory adjusting strategy; if the memory using quantity is larger than the upper-limit threshold valve, dynamically adding the memory of the virtual machine; if the memory using quantity is smaller than the lower-limit threshold value, dynamically reducing the memory of the virtual machine. According to the method, through a cloud management platform, dynamic expansion or reduction of the memory of the virtual machine can be effectively realized on the premise that the virtual machine is not switched off, ceaseless operation of core services in the virtual machine can be guaranteed, and unnecessary memory waste is reduced.

Description

technical field [0001] The invention relates to the technical field of computer networks, in particular to a method and system for dynamically adjusting memory of a virtual machine in a cloud computing environment. Background technique [0002] With the rapid development of today's computers and networks, virtualization technology is constantly improving. With the continuous development of virtualization technology and the continuous use of cloud computing, the gap in performance between systems and applications running on virtual machines and systems and applications running on actual physical machines is decreasing, making more and more enterprises will key business Running on a virtual machine on a cloud computing virtualization server. Therefore, how to ensure the uninterrupted and continuous operation of the key business running on the virtual machine is a concern nowadays. [0003] In the existing cloud computing environment, the administrator can only specify a fixe...

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Problems solved by technology

[0004] Therefore, when the memory size allocated by the administrator to the virtual machine cannot meet the needs of the application, the administrator must re-adjust the memory usage of the virtual machine after shutting down the virtual machine, so that the user's application must be stopped for a period of time. Critical business cannot continue to operate

Moreover, if the administrator allocates too much memory to the virtual machine, and the application of the virtual machine sometimes does not need to use so much memory, this will inevitably cause a waste of resources

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