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SUMMARY:TCP in the Wild - Richard Clegg (UCL)
DTSTART:20140320T150000Z
DTEND:20140320T160000Z
UID:TALK47119@talks.cam.ac.uk
CONTACT:23487
DESCRIPTION:This talk looks at the performance of TCP measurements “in t
 he wild” as revealed by analysis of passive traces.  It is shown that th
 e old-fashioned model of TCP as being a protocol which “fills a pipe” 
 (maximises throughput) controlled by loss is not the best way to understan
 d how TCP really works in networks.  The first section of the talk looks a
 t CAIDA and MAWI traces and constructs a statistical model which relates T
 CP throughput with delay\, session length and loss using statistical model
 s.  The second section of the talk digs in detail into the mechanisms whic
 h control TCP behaviour by analysis of unanonymised traces from MAWI (Japa
 n).  Traditionally TCP is thought of in terms of a sender pushing data to 
 a receiver at a rate governed by a window size which is modulated by loss.
   Trace analysis shows that for the data set considered less than half of 
 the sent data is controlled by this mechanism. \n\nBio: Richard Clegg is a
  Senior Research Fellow in Electronic Engineering at University College Lo
 ndon.  His PhD "The Statistics of Dynamic Networks" was awarded by the Uni
 versity of York in 2005.  His current research interests include Software 
 Defined Networking\, traffic statistics\, overlay networks and network top
 ologies.\n\n
LOCATION:FW26\, Computer Laboratory\, William Gates Builiding
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