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Cory Lueninghoener, Deputy Group Leader of Production High Performance Computing at Los Alamos National Laboratory
"LISA is the conference that I send my system administrators to so they can bring the latest tools and techniques back to the rest of the team. Much of our current environment can be traced directly back to LISA."
Cory Lueninghoener, Deputy Group Leader of Production High Performance Computing at Los Alamos National Laboratory
"LISA is where professionals share what's hot in designing, building, and maintaining critical systems."
Tom Limoncelli, author, speaker, and system administrator
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Amy Rich, Manager of Release Engineering Operations at Mozilla
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Nicole Forsgren Velasquez, Utah State University
"LISA is where professionals share what's hot in designing, building, and maintaining critical systems."
Tom Limoncelli, author, speaker, and system administrator
Automatic and Dynamic Configuration of Data Compression for Web Servers
LISA: Where systems engineering and operations professionals share real-world knowledge about designing, building, and maintaining the critical systems of our interconnected world.
The LISA conference has long served as the annual vendor-neutral meeting place for the wider system administration community. The LISA14 program recognized the overlap and differences between traditional and modern IT operations and engineering, and developed a highly-curated program around 5 key topics: Systems Engineering, Security, Culture, DevOps, and Monitoring/Metrics. The program included 22 half- and full-day training sessions; 10 workshops; and a conference program consisting of 50 invited talks, panels, refereed paper presentations, and mini-tutorials.
Refereed Paper
Thursday, November 13, 2014 - 2:00pm-2:15pm
Eyal Zohar, Yahoo! Labs; Yuval Cassuto, Technion—Israel Institute of Technology
HTTP compression is an essential tool for web speed up and network cost reduction. Not surprisingly, it is used by over 95% of top websites, saving about 75% of webpage traffic.
The currently used compression format and tools were designed over 15 years ago, with static content in mind. Although the web has significantly evolved since and became highly dynamic, the compression solutions have not evolved accordingly. In the current most popular web-servers, compression effort is set as a global and static compression-level parameter. This parameter says little about the actual impact of compression on the resulting performance. Furthermore, the parameter does not take into account important dynamic factors at the server. As a result, web operators often have to blindly choose a compression level and hope for the best.
In this paper we present a novel elastic compression framework that automatically sets the compression level to reach a desired working point considering the instantaneous load on the web server and the content properties. We deploy a fully-working implementation of dynamic compression in a web server, and demonstrate its benefits with experiments showing improved performance and service capacity in a variety of scenarios. Additional insights on web compression are provided by a study of the top 500 websites with respect to their compression properties and current practices.
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BibTeX
@inproceedings {186495,
author = {Eyal Zohar and Yuval Cassuto},
title = {Automatic and Dynamic Configuration of Data Compression for Web Servers},
booktitle = {28th Large Installation System Administration Conference (LISA14)},
year = {2014},
isbn = {978-1-931971-17-1},
address = {Seattle, WA},
pages = {106--117},
url = {https://www.usenix.org/conference/lisa14/conference-program/presentation/zohar},
publisher = {USENIX Association},
month = nov
}
