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Mahimahi: Accurate Record-and-Replay for HTTP

Authors: 

Ravi Netravali, Anirudh Sivaraman, Somak Das, and Ameesh Goyal MIT CSAIL; Keith Winstein, Stanford University; James Mickens, Harvard University; Hari Balakrishnan, MIT CSAIL

Abstract: 

This paper presents Mahimahi, a framework to record traffic from HTTP-based applications, and later replay it under emulated network conditions. Mahimahi improves upon prior record-and-replay frameworks in three ways. First, it is more accurate because it carefully emulates the multi-server nature of Web applications, present in 98% of the Alexa US Top 500 Web pages. Second, it isolates its own network traffic, allowing multiple Mahimahi instances emulating different networks to run concurrently without mutual interference. And third, it is designed as a set of composable shells, providing ease-of-use and extensibility.

We evaluate Mahimahi by: (1) analyzing the performance of HTTP/1.1, SPDY, and QUIC on a corpus of 500 sites, (2) using Mahimahi to understand the reasons why these protocols are suboptimal, (3) developing Cumulus, a cloud-based browser designed to overcome these problems, using Mahimahi both to implement Cumulus by extending one of its shells, and to evaluate it, (4) using Mahimahi to evaluate HTTP multiplexing protocols on multiple performance metrics (page load time and speed index), and (5) describing how others have used Mahimahi.

Ravi Netravali, MIT CSAIL

Anirudh Sivaraman, MIT CSAIL

Somak Das, MIT CSAIL

Ameesh Goyal, MIT CSAIL

Keith Winstein, Stanford University

James Mickens, Harvard University

Hari Balakrishnan, MIT CSAIL

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BibTeX
@inproceedings {191577,
author = {Ravi Netravali and Anirudh Sivaraman and Somak Das and Ameesh Goyal and Keith Winstein and James Mickens and Hari Balakrishnan},
title = {Mahimahi: Accurate {Record-and-Replay} for {HTTP}},
booktitle = {2015 USENIX Annual Technical Conference (USENIX ATC 15)},
year = {2015},
isbn = {978-1-931971-225},
address = {Santa Clara, CA},
pages = {417--429},
url = {https://www.usenix.org/conference/atc15/technical-session/presentation/netravali},
publisher = {USENIX Association},
month = jul,
}
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