By Topic

Scalable Web server cluster design with workload-aware request distribution strategy WARD

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Cherkasova, L. ; Hewlett-Packard Co., Palo Alto, CA, USA ; Karlsson, M.

We consider a Web cluster in which the content-aware distribution is performed by each of the nodes in a Web cluster. Each server in the cluster may forward a request to another node based on the requested content. We propose a new workload-aware request distribution strategy WARD, that assigns a small set of most frequent files, called core, to be served locally, by any server in a cluster, while partitioning the rest of the files to be served by different cluster nodes. We propose an algorithm, called ward-analysis, to compute the nearly optimal core size. The algorithm takes into account workload access patterns and cluster parameters such as number of nodes, node RAM, TCP handoff overhead, and disk access overhead. Our simulations driven by a realistic workload show that WARD achieves super-linear speedup with increased cluster size. It shows superior performance compared with traditional round-robin strategy (up to 260% increased throughput for a cluster of 16 nodes), and outperforms a pure partitioning strategy based on a cache-affinity requests distribution (up to 50% increased throughput for a cluster of 16 nodes)

Published in:

Advanced Issues of E-Commerce and Web-Based Information Systems, WECWIS 2001, Third International Workshop on.

Date of Conference: