River: Resource Management in Virtualized Environments
Bhuvan Urgaonkar's Research: River project
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Project Overview
The recent resurgence of research in server virtualization
has created a lot of interest among providers of large-scale
data centers in employing this technology to design improved
solutions for managed hosting. Server virtualization replaces
the traditional operating system with a software layer called
the Virtual Machine Monitor (VMM) that enables the simultaneous
execution of multiple operating systems on a single physical
server. Virtualization holds the promise of increased degrees
of resource consolidation with accompanying reduction in
operational costs of administration, repair, and electricity
by allowing hitherto impossible or difficult to achieve
co-location of heterogeneous operating systems, swift migration
of application components across physical servers, and secure
co-hosting of mutually un-trusting applications.
Examples of data centers adopting server virtualization
can be seen in a variety of domains ranging from the hosting
of Web and e-commerce applications to educational, research,
and government organizations. Data centers now form an
extremely competitive business with enormous investments
in administrative personnel, revenues in the billions
of dollars, and huge consumption of electricity. Consequently,
the cost and efficiency benefits offered by virtualization
have significant implications for: (i) the profits of
data centers and hosted applications, (ii) the satisfaction
and success of the organizations or private citizens they
cater to, and (iii) the well-being of our environment.
Designing efficient virtualized data centers is therefore
a desirable and worthy endeavor in multiple ways.
The transition from traditional hosting models to a virtualized
model is, however, not a trivial one. Realizing the consolidation-related
benefits that virtualization has to offer requires a re-consideration
of: (i) schedulers within the VMM, (ii) mechanisms for
resource usage monitoring and accounting, and (iii) system-wide
dynamic resource provisioning mechanisms. This project
aims at identifying the key challenges that arise on all
these fronts in a virtualized data center and developing
a comprehensive solution to address them.
People
Sriram Govindan
Anand Sivasubramaniam
Byung Chul Tak
Bhuvan Urgaonkar
Publications
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vPath: Precise Discovery of Request Processing Paths from Black-Box Observations of Thread and Network Activities
Byung Chul Tak, Chunqiang Tang, Chun Zhang, Sriram Govindan, Bhuvan Urgaonkar, and Rong N. Chang
Proceedings of the Thirty Fourth USENIX Annual Technical Conference
(USENIX'09), June 2009, San Diego, CA.
[32 accepted out of 191 submissions = 17%]
Abstract Paper Tech. Report
Xen and Co.: Communication-aware CPU Management in Consolidated Xen-based Hosting Platforms
Sriram Govindan, Jeonghwan Choi, Arjun R Nath, Amitayu Das, Bhuvan Urgaonkar, Anand Sivasubramaniam
IEEE Transactions on Computers, Vol. TBD, No. TBD, accepted October 2008, to appear 2009.
Xen and Co.: Communication-aware CPU Scheduling
for Consolidated Xen-based Hosting Platforms
Sriram Govindan, Arjun R. Nath,
Amitayu Das, Bhuvan Urgaonkar, and Anand Sivasubramaniam
Proceedings of the Third International
ACM SIGPLAN/SIGOPS Conference on Virtual Execution Environments
(VEE), June 2007, San Diego, CA.
[19 accepted out of 70 submissions = 27%]
Also, Technical Report CSE-06-017,
Department of Computer Science and Engineering, The Pennsylvania
State University, October 2006.
Abstract
Paper
Tech. Report
Software
Xen and Co.: Communication-aware CPU Scheduling for Xen
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