Evaluating and optimizing I/O virtualization in kernel-based virtual machine (KVM)
Document Type
Conference Proceeding
Publication Date
11-12-2010
Department
Department of Computer Science
Abstract
I/O virtualization performance is an important problem in KVM. In this paper, we evaluate KVM I/O performance and propose several optimizations for improvement. First, we reduce VM Exits by merging successive I/O instructions and decreasing the frequency of timer interrupt. Second, we simplify the Guest OS by removing redundant operations when the guest OS operates in a virtual environment. We eliminate the operations that are useless in the virtual environment and bypass the I/O scheduling in the Guest OS whose results will be rescheduled in the Host OS. We also change NIC driver's configuration in Guest OS to adapt the virtual environment for better performance.
Publication Title
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
ISBN
978-3-642-15672-4
Recommended Citation
Zhang, B.,
Wang, X.,
Lai, R.,
Yang, L.,
Wang, Z.,
Luo, Y.,
&
Li, X.
(2010).
Evaluating and optimizing I/O virtualization in kernel-based virtual machine (KVM).
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics),
6289 LNCS, 220-231.
http://doi.org/10.1007/978-3-642-15672-4_20
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/4180