Preferential treatment for short flows to reduce web latency

  • Authors:
  • Xuan Chen;John Heidemann

  • Affiliations:
  • Information Sciences Institute, University of Southern California, Suite 1001, 4676 Admiralty Way, Marina Del Rey, CA;Information Sciences Institute, University of Southern California, Suite 1001, 4676 Admiralty Way, Marina Del Rey, CA

  • Venue:
  • Computer Networks: The International Journal of Computer and Telecommunications Networking
  • Year:
  • 2003

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Abstract

In this paper, we propose short flow differentiating (SFD) algorithm to reduce the user-perceived web latency. This algorithm gives short flows preferential treatment. We implement SFD algorithm as a simple differentiated services policy and evaluate its performance in simulation. We find that SFD algorithm reduces the transmission latency of short flows and the response time to retrieve representative web pages by about 30%. Using web traces, we demonstrate that 99% web pages would be transferred faster. SFD penalizes long flows, but the penalty is well bounded. We further evaluate how different schemes trade-off the performance between short and long flows.