Hardware supported methods of multi-VM switching and dynamic bandwidth allocation

LI Long-fei; WANG Jian-feng; LIU Huan; SHI Yang-chun

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Hardware supported methods of multi-VM switching and dynamic bandwidth allocation

更新时间：2026-09-04

- Hardware supported methods of multi-VM switching and dynamic bandwidth allocation
- Vol. 37, Issue 1, Pages: 93-98(2020)
- 作者机构：
  
  西安微电子技术研究所集成电路设计部,陕西,西安,710065
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2020
- 稿件说明：
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李龙飞, 王剑峰, 刘欢, 史阳春. 硬件支持的多虚拟机数据交换及动态带宽分配方法[J]. 微电子学与计算机, 2020, 37(1): 93-98.

LI Long-fei, WANG Jian-feng, LIU Huan, et al. Hardware supported methods of multi-VM switching and dynamic bandwidth allocation[J]. 2020, 37(1): 93-98.
李龙飞, 王剑峰, 刘欢, 史阳春. 硬件支持的多虚拟机数据交换及动态带宽分配方法[J]. 微电子学与计算机, 2020, 37(1): 93-98. DOI：

LI Long-fei, WANG Jian-feng, LIU Huan, et al. Hardware supported methods of multi-VM switching and dynamic bandwidth allocation[J]. 2020, 37(1): 93-98. DOI：

摘要

针对同一宿主计算机上多虚拟机之间数据交换开销大且带宽分配不灵活的问题，提出了一种硬件支持的多虚拟机数据交换及动态带宽分配方法，并进行建模和实验.该方法釆用IO虚拟化的思想，面向以太网控制器的硬件架构进行改进与优化.通过对虚拟机的发送数据进行解析，同时扩展发送引擎对接收BD环的访问权限，实现数据从发送引擎直接向目的虚拟机接收队列的交换过程；通过对虚拟机中接收队列的数据信息进行统计与分析，实现对各个虚拟机的带宽进行动态分配与调整.以自主研发的千兆以太网控制器为原型搭建测试平台进行实验.结果表明，本文提出的方法不仅减小了多虚拟机之间数据交换和带宽分配的CPU开销，而且对以太网控制器和虚拟机管理程序均保持了兼容.

Abstract

Aiming at the problem of high data exchange overhead and inflexible bandwidth allocation between multi- virtual machines(VMs) on the same host

hardware supported methods of multi-VMs switching and dynamic bandwidth allocation are proposed. Based on the concept of IO virtualization

this method focuses on improving and optimizing the hardware architecture of Ethernet controller. By parsing the sending data of VM and extending the access authority of the sending engine to the receiving BD ring

the switching process from the sending engine to the destination VM is realized directly. Besides

through statistics and analysis of data of receiving queue in VM

the bandwidth of each VM can be dynamically allocated and adjusted. The experimental results show that the proposed methods not only reduce the CPU overhead of data exchange and bandwidth allocation between multi-VMs

but also maintains compatibility with Ethernet controllers and hypervisors.

关键词

Keywords

references

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