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Analysis of Web Response Time on Queue Managements and Transmission Latency in Congested Network

혼잡 망에서의 큐 제어 방식과 전송지연시간에 대한 웹 반응 시간 분석

  • 석우진 (한국과학기술정보연구원 연구망개발팀)
  • Published : 2008.08.29

Abstract

In this paper, we analyze web response time depending on queue managements and transmission latencies in highly congested network situation. Under FIFO scheme, the response times are for three different sizes of queue are almost the same, but the response time increases as traffic intensity increases. The performance between different queue sizes shows more different in 90% and 98% traffic intensity than in 80% traffic intensity. Especially the difference becomes bigger in short latency case than long latency case. Under RED scheme, three differently tunned RED schemes do not impact on the response time when the size of queue is relatively large. When the queue size becomes smaller, the response time of the differently tunned RED schemes becomes different for short latency case while the response times are almost same for long latency case. When comparing FIFO and RED schemes under same size of queue, RED scheme shows less response time than that of FIFO for the long latency case in high traffic intensity.

본 논문에서는, 혼잡 망에서의 큐 제어 방식과 전송 지연 시간에 대한 웹 반응 시간을 분석하였다. FIFO 방식에서는, 웹 반응 시간이 큐 크기에 대해서 거의 일정한 성능을 보여주었으나, 트래픽 부하가 높아질수록 웹 반응 시간은 길어졌다. 80%의 트래픽 부하보다, 90%와 98%의 트래픽 부하일 경우에, 큐 크기가 달라짐에 따라 웹 반응 시간이 더 뚜렷하게 다르게 나타났다. 특히 전송 지연 시간이 짧을 경우, 웹 반응 시간의 차이가 더욱 뚜렷하게 나타났다. RED 방식에서는, 상대적으로 큰 큐 크기일 경우, 3가지 서로 다른 설정의 RED 방식이 웹 반응 시간에 뚜렷한 영향을 미치지 못하였다. 큐 크기가 작아졌을 경우, 짧은 전송 지연에 대하여 각 RED 방식의 웹 반응 시간이 서로 뚜렷하게 다르게 나타났다. FIFO와 RED의 비교에서, 긴 전송 지연 시간일 경우, RED 방식이 FIFO보다 작은 웹 반응 시간을 보여주었다.

Keywords

References

  1. S. Floyd and V. Jacobson, "Random Early Detection Gateways for Congestion Avoidance," IEEE/ACM Transactions on Networking, Vol.1, No.4, pp.397-413, August 1993 https://doi.org/10.1109/90.251892
  2. L. Le, J. Aikat, K. Jeffay, and F.D. Smith, "The Effects of Active Queue Management on Web Performance," ACM SIGCOMM 2003, pp.265-276, August 2003
  3. L. Le, J. Aikat, K. Jeffay, and F. D. Smith, "The Effects of Active Queue Management and Explicit Congestion Notification on Web Performance," IEEE/ACM Transactions on Networking, Vol.15, pp.1217-1230, December. 2007 https://doi.org/10.1109/TNET.2007.910583
  4. R. Chakravorty, P. Vidales, K. Subramanian, I. Pratt, and J. Crowcroft, "Performance Issues with Vertical Handovers-Experiences from GPRS Cellular and Wireless LAN Hot-spots Integration," in Proc. IEEE PERCOM, pp.155-164, March 2004 https://doi.org/10.1109/PERCOM.2004.1276854
  5. A. Gurtov and J. Korhonen, "Effect of vertical handovers on performance of TCP-friendly rate control," ACM SIGMOBILE Mobile Computing and Communications Review, Vol.8, No.3, pp.73-87, July 2004 https://doi.org/10.1145/1031483.1031494
  6. M. Allman, D. Glover, and L. Sanchez, "Enhancing TCP over Satellite Channels using Standard Mechanisms," IETF RFC 2488, January 1999
  7. N. Ghani and S. Dixit, "TCP/IP Enhancemetns for Satellite Networks," IEEE Communications Magazine, July 1999
  8. M. Allman, et al., "Ongoing TCP Research Related to Satellites," IETF RFC 2760, February 2000
  9. M. Christiansen, J. Kevin, D. Ott, and F. D. Smith, “Tunning RED for Web Traffic,” IEEE/ACM Transactions on Networking, Vol.9, No.3, pp.249-264, June 2001 https://doi.org/10.1109/90.929849