Evaluating Xen for Router Virtualization
Evaluating Xen for Router Virtualization
复制标题
评估 Xen 的路由器虚拟化
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Tim Schooley
中科院分区：
文献类型：
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作者：
Norbert Egi;A. Greenhalgh;M. Handley;Mickaël Hoerdt;L. Mathy;Tim Schooley
在本文中，我们评估了Xen虚拟机监控环境中的软件IP路由器转发平面的性能，以确定（一些）虚拟路由器的设计问题。为此，我们评估和比较两个相同的Linux软件路由器配置的转发性能，运行在Xen虚拟机管理程序或香草Linux。即使是最小的数据包，我们表明，Xen DomO特权域提供近本地转发性能的条件下，sollicitation unpriviledged域保持最小，而Xen unpriviledged域提供非常差的性能在每种情况下。这表明，虚拟路由器平台的一个重要设计原则必须是将所有虚拟路由器的所有转发处理到相同的转发引擎上，以避免非常有害的每分组上下文切换。
In this paper, we evaluate the performance of a software IP router forwarding plane inside the Xen virtual machine monitor environment with a view to identifying (some) design issues in Virtual Routers. To this end, we evaluate and compare the forwarding performance of two identical Linux software router configurations, run either above the Xen hypervisor or within vanilla Linux. Even with minimal sized packets, we show that the Xen DomO privileged domain offers near native forwarding performance at the condition that the sollicitation to unpriviledged domains stay minimal, whereas Xen unprivileged domains offer very poor performance in every cases. This shows that an important design principle for virtual router platforms must be to handle all forwarding, for all virtual routers, onto the same forwarding engine, in order to avoid much detrimental per-packet context switching.