Virtual CPU scheduling method capable of enhancing real-time performance

A scheduling method and real-time technology, applied in the field of computing system virtualization, can solve problems such as poor real-time application support, achieve good support, balance load, and improve performance.

Active Publication Date: 2014-03-26
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0008] The present invention is a virtual CPU scheduling method with enhanced real-time performance, which is applied in the Xen virtualization platform to solve the problem that Xen does not support real-time applications in a multi-core environment. Xen includes virtual machine management and control tools and virtual machine monitoring device

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  • Virtual CPU scheduling method capable of enhancing real-time performance
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  • Virtual CPU scheduling method capable of enhancing real-time performance

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

[0023] Below at first technical terms of the present invention are explained and illustrated:

[0024] Real-time virtual machine: A virtual machine running a real-time application with high real-time requirements in the guest operating system runs in the real-time CPU resource pool.

[0025] Non-real-time virtual machine: A virtual machine running a general-purpose application that does not require real-tim...

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Abstract

The invention discloses a virtual CPU scheduling method capable of enhancing real-time performance. The virtual CPU scheduling method comprises the following steps: a virtual machine management control tool accepts a command that a user operates a virtual machine and schedule parameters; the management control tool judges whether a user command is related with a real-time virtual machine, conditions for meeting schedulability of the real-time virtual machine are calculated if the user command is related with the real-time virtual machine, and physical CPU resources are dynamically partitioned according to the calculation result; scheduling is carried out by adopting the virtual CPU scheduling method capable of enhancing real-time performance, a global earliest deadline priority scheduling algorithm is applied to a CPU resource pool operating the real-time virtual machine, and a limit scheduling algorithm is applied to a CPU resource pool operating a non-real time virtual machine; optimization of virtual CPU caching and hitting is conducted on the global earliest deadline priority scheduling algorithm. According to the virtual CPU scheduling method capable of enhancing real-time performance, real-time performance of the real-time virtual machine is guaranteed, a good isolation property is provided for partitioning the CPU recourses, and influence on performance of the non-real time virtual machine is reduced.

Description

technical field [0001] The invention belongs to the technical field of computing system virtualization, and more particularly relates to a virtual CPU scheduling method with enhanced real-time performance. Background technique [0002] In recent years, with the rapid development of computing architecture and hardware and software technology, computing system virtualization technology has become increasingly mature, and has become a popular technology in academia and industry. Virtualization technology enables computer software to run on a virtual platform instead of a real physical machine, and applications run in separate spaces without affecting each other, enabling one platform to run multiple operating systems at the same time, expanding hardware capacity and simplifying The process of software reconfiguration is improved, which significantly improves the utilization rate, work efficiency, security and flexibility of the computer. [0003] Multiprocessor systems bring g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/50G06F9/455
Inventor 吴松金海付丹青周理科
Owner HUAZHONG UNIV OF SCI & TECH
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