Rema Hariharan

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The advent of Web technology has made Web servers core elements of future communication networks. Although the amount of traffic that Web servers must handle has grown explosively during the last decade, the performance limitations and the proper tuning of Web servers are still not well understood. In this paper we present an end-to-end queueing model for(More)
In this paper, we illustrate a model-based approach to Web server performance evaluation, and present an analytic queueing model of Web servers in distributed environments. Performance predictions from the analytic model match well with the performance observed from simulation. The model forms an excellent basis for a decision support tool to allow system(More)
We present a modified construction of a class of near perfect sequences of odd length m(2<sup>j</sup>+1) where m=3,5,7&#x2026;;j=2,4,6&#x2026;, using a shift sequence associated with a primitive polynomial of degree 2j together with a pair of completely orthogonal sequences.
This short white paper describes our efforts to establish techniques and tools to identify optimization opportunities for Hadoop workloads. Suitable performance metrics and relevant benchmark use cases are a crucial component to achieve these goals. We discuss efforts to define suitable metrics for cloud computing in general, briefly describe hardware and(More)
This paper presents a new method of construction of near perfect sequences of even length N = 2mn where m is an odd prime number and n = (2 J  + 1), J is an even number. We use a shift sequence associated with a primitive polynomial of degree 2J over a finite field GF(2), together with a pair of completely orthogonal sequences of length m to construct near(More)
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