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Summary: Towards a Hierarchical Scheduling System for Distributed WWW Server
Clusters
Daniel Andresen and Timothy McCune
Department of Computing and Information Sciences
234 Nichols Hall
Kansas State University
Manhattan, KS 66506
fdan, trmg@cis.ksu.edu
Abstract
In this paper we present a model for dynamically
scheduling HTTP requests across clusters of servers, opti-
mizing the use of client resources as well as the scattered
server nodes. We also present a system, H-SWEB, imple-
menting our techniques and showing experimental improve-
ments of over 250%, which have been achieved through uti-
lizing a global approach to scheduling requests. This is the
first system to provide a hierarchical scheduling mechanism
for distributedHTTP server clusters incorporatingdynamic
client-server task distribution and distributed data access.
H-SWEB uses sophisticated scheduling techniques in moni-
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