PPT-Identifying Performance Bottlenecks in CDNs through TCP-Lev

Peng Sun Minlan Yu Michael J Freedman Jennifer Rexford Princeton University August 19 2011 Performance Bottlenecks 2 CDN Servers Internet Clients APP Write too slowly Server OS Insufficient send buffer or . Amit Banerjee . Support Escalation Engineer. Microsoft Corporation. SQL . Server FAQ: . http://blogs.msdn.com/sqlserverfaq. . TroubleshootingSQL. : . http://troubleshootingsql.com. . Twitter: . @. banerjeeamit. Hakim . Weatherspoon. Assistant Professor, . Dept. of Computer Science. CS 5413: High Performance Systems and Networking. September 5, 2014. Slides . used and adapted . judiciously from Computer Networking, A Top-Down Approach. draft-handley-mptcp-routing-00. Mark Handley. Costin Raiciu. Marcelo Bagnulo. Multiaddressed MP-TCP. Host is connected to the Internet via more than one path.. Site where host resides is multihomed.. (. AccECN. ). draft-kuehlewind-tcpm-accurate-ecn-03. Bob Briscoe, BT. Richard Scheffenegger, NetApp. Mirja . Kühlewind. , Stuttgart . Uni. IETF-90, Jul’14. Bob Briscoe’s work is part-funded by the European Community. Computer Networks. Principles of Congestion Control. Congestion:. informally: “too many sources sending too much data too fast for the . network. to handle”. different from flow control!. manifestations:. Minlan Yu. University of Southern California. 1. Joint work with . Wenjie. Jiang, . Haoyuan. Li, and Ion . Stoica. Throughput-Oriented Traffic. 2. Throughput-oriented traffic is growing in Internet. Costin Raiciu. Advanced Topics in Distributed Systems. 2011. TCP Primer. Loss recovery. Fast retransmit. Timeouts. Congestion Control. Buffer sizing. TCP . Incast. Why does it happen?. How bad is it?. Prepared by. Clint Ward. Brigham Young University. A Brief Overview. OPT Defined. Optimized Production . T. echnology is a planning & production system focused on throughput maximization by alleviating bottlenecks. Minlan Yu. University of Southern California. 1. Joint work with . Wenjie. Jiang, . Haoyuan. Li, and Ion . Stoica. Throughput-Oriented Traffic. 2. Throughput-oriented traffic is growing in Internet. CS144 Review Session 4. April 25, 2008. Ben Nham. Announcements. Upcoming dates. Wed, 4/30: Lab 3 due, Lab 4 out. Fri, 5/2: Midterm Review. Mon, 5/5: In-class midterm. Wed, 5/14: Lab 4 due. Lab 3 is more complex than Lab 1 or Lab 2, so start now. Facilitators’ Workshop on District Health Performance Improvement. Lilongwe, 25. th. – 27. th. March 2015. Steps. Diagnose. Select interventions. Define . indicators. Identify information . sources . Minlan Yu. University of Southern California. 1. Joint work with . Wenjie. Jiang, . Haoyuan. Li, and Ion . Stoica. Throughput-Oriented Traffic. 2. Throughput-oriented traffic is growing in Internet. TCP Vegas Lawrence s. Brakmo Sean W. O’Malley Larry l. Peterson Presented TCP Vegas in 1994 Presented by Chung Tran TCP Vegas VS TCP Reno When TCP Vegas was research and presented in 1994 it stated that it have a better throughput than TCP Reno by 40 to 70 percent Mike Freedman. COS 461: Computer Networks. http://. www.cs.princeton.edu. /courses/archive/spr20/cos461/. Continuation of . Lec. 15. 2. HTTP xfer = single object. Web pages = many objects. nytimes.com.