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USITS 2001 Abstract
Partial Prefetch for Faster Surfing in Composite Hypermedia
Javed I. Khan and Qingping Tao, Kent State University
Abstract
In this paper we present a prefetch technique, which
incorporates a scheme similar to data streaming to minimize the response-lag.
Unlike previous all or none techniques, we propose partial prefetch where the size of the lead segment is
computed optimally so that only a minimum but sufficient amount of data is
prefetched and buffered. The remaining segment is fetched if and only when the
media is traversed. Thus, it delivers content without any increase in perceived
response delay, and at the same time drastically minimizes unnecessary
pre-load. The paper presents the scheme in the context of surfing in composite multimedia documents. It presents
the technique and optimization scheme used for stream segmentation backed by
analytical model and statistical simulation. We report remarkable increase in
the responsiveness of web systems by a factor of 2-15 based on the specific
situation.
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