NDLI: Characterizing Network Traffic in a Cluster-based, Multi-tier Data Center

Content Provider	IEEE Xplore Digital Library
Author	Ersoz, D. Yousif, M.S. Das, C.R.
Copyright Year	2007
Description	Author affiliation: Dept. of Comput. Sci. & Eng., Penn State Univ., University Park, PA (Ersoz, D.)
Abstract	With the increasing use of various Web-based services, design of high performance, scalable and dependable data centers has become a critical issue. Recent studies show that a clustered, multi-tier architecture is a cost-effective approach to design such servers. Since these servers are highly distributed and complex, understanding the workloads driving them is crucial for the success of the ongoing research to improve them. In view of this, there has been a significant amount of work to characterize the workloads of Web-based services. However, all of the previous studies focus on a high level view of these servers, and analyze request-based or session-based characteristics of the workloads. In this paper, we focus on the characteristics of the network behavior within a clustered, multi-tiered data center. Using a real implementation of a clustered three-tier data center, we analyze the arrival rate and inter-arrival time distribution of the requests to individual server nodes, the network traffic between tiers, and the average size of messages exchanged between tiers. The main results of this study are; (1) in most cases, the request inter-arrival rates follow log-normal distribution, and self-similarity exists when the data center is heavily loaded, (2) message sizes can be modeled by the log-normal distribution, and (3) service times fit reasonably well with the Pareto distribution and show heavy tailed behavior at heavy loads.
Sponsorship	IEEE Comput. Soc. Tech. Comm. Distributed Process.
Starting Page	59
Ending Page	59
File Size	370179
Page Count	1
File Format	PDF
ISBN	0769528373
ISSN	10636927
DOI	10.1109/ICDCS.2007.90
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-06-25
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Telecommunication traffic Delay Network servers Large-scale systems Hardware Log-normal distribution Web server Computer science Data engineering Design engineering
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Software

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