Title:
Characterizing and Mitigating Web Performance Bottlenecks in Broadband Access Networks
Characterizing and Mitigating Web Performance Bottlenecks in Broadband Access Networks
Author(s)
Sundaresan, Srikanth
Magharei, Nazanin
Feamster, Nick
Teixeira, Renata
Magharei, Nazanin
Feamster, Nick
Teixeira, Renata
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Abstract
We present the first large-scale analysis of Web performance
bottlenecks as measured from broadband access networks,
using data collected from two extensive home router deployments.
We design and implement tools and methods to identify
the contribution of critical factors such as DNS lookups
and TCP connection establishment to Web page load times
and characterize how they contribute to page load times in
broadband networks. We find that, as the connection speeds
of broadband networks continue to increase, other factors
such as TCP connection setup time, server response time,
and network latency are often dominant performance bottlenecks.
Thus, realizing a “faster Web” requires not only
higher download throughput, but also optimizations to reduce
both client and server-side latency. We deploy three
common caching optimizations inside home networks to reduce
latency—content caching, TCP connection caching,
and DNS caching—and evaluate their effects on the factors
that contribute to page load times in broadband networks.
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Date Issued
2013
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Resource Type
Text
Resource Subtype
Technical Report