Understanding the Management of Client Perceived Pageview Response Time

David P. Olshefski, Jason Nieh

Proceedings of the Joint International Conference on Measurement and Modeling of Computer Systems (SIGMETRICS/Performance 2006), St. Malo, France, June 26-30, 2006, pp. 240-251.

Abstract

Understanding and managing the response time of web ser- vices is of key importance as dependence on the World Wide Web continues to grow. We present Remote Latency-based Management (RLM), a novel server-side approach for man- aging pageview response times as perceived by remote clients, in real-time. RLM passively monitors server-side network traffic, accurately tracks the progress of page downloads and their response times in real-time, and dynamically adapts connection setup behavior and web page content as needed to meet response time goals. To manage client perceived pageview response times, RLM builds a novel event node model to guide the use of several techniques for manipulating the packet traffic in and out of a web server complex, includ- ing fast SYN and SYN/ACK retransmission, and embedded object removal and rewrite. RLM operates as a stand-alone appliance that simply sits in front of a web server com- plex, without any changes to existing web clients, servers, or applications. We have implemented RLM on an inexpen- sive, commodity, Linux-based PC and present experimen- tal results that demonstrate its effectiveness in managing client perceived pageview response times on transactional e-commerce web workloads.

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Columbia University Department of Computer Science