Achieving High Resolution Timer Events in Virtualized Environment

作者：Adamczyk Blazej^*; Chydzinski Andrzej

来源：PLos One, 2015, 10(7): e0130887.

DOI：10.1371/journal.pone.0130887

Virtual Machine Monitors (VMM) have become popular in different application areas. Some applications may require to generate the timer events with high resolution and precision. This however may be challenging due to the complexity of VMMs. In this paper we focus on the timer functionality provided by five different VMMs-Xen, KVM, Qemu, VirtualBox and VMWare. Firstly, we evaluate resolutions and precisions of their timer events. Apparently, provided resolutions and precisions are far too low for some applications (e.g. networking applications with the quality of service). Then, using Xen virtualization we demonstrate the improved timer design that greatly enhances both the resolution and precision of achieved timer events.

• 出版日期2015-7-15