[e2e] concurrent TCP connections - how likely are they?

Zhen Liu zhenl at us.ibm.com
Wed Oct 22 11:06:22 PDT 2003

The following paper has addressed the issue of concurrent HTTP connetions:

Z. Liu, N. Niclausse, C. Jalpa-Villanueva, “Traffic Model and Performance
Evaluation of Web Servers”, Performance Evaluation, Vol 46/2-3, pp 77-100,


Zhen Liu,  Ph. D.
IBM T. J. Watson Research Center
P.O. Box 704
Yorktown Heights, NY 10598
E-mail: zhenl at us.ibm.com
Phone: 914-784-6503   Fax: 914-784-6040
URL: http://www.research.ibm.com/people/z/zhen/

                      Michael Savoric                                                                                                 
                      <savoric at ee.tu-berlin.        To:                                                                               
                      de>                           cc:       end2end-interest at postel.org                                             
                      Sent by:                      Subject:  [e2e] concurrent TCP connections - how likely are they?                 
                      10/22/2003 11:59 AM                                                                                             

I am searching for investigations at huge (WWW) servers to
out how likely is it to have more than a single TCP
to the same destination or the same subnetwork at a given

* Do you know some links or papers with regard to this

* Or is it possible to get (anonymized) traces from such
  that I can make my own investigations?

The background is:
I have developed a common congestion controller for TCP
in ns-2 and a Linux implementation has been written by one
of my students.
Both simulation and measurement results show that such a
congestion controller reaches (large) performance gains.
In addition, together with some colleagues I have
analytically shown
that my common congestion controller is not more aggressive
to the
network than standard TCP in its "best case" (Proceedings of
ITC 18,
September 2003, Berlin).

What I need now is citeable material to motivate the usage
of a common
congestion controller in the Internet.

Best regards,
Michael Savoric

E-Mail:                        savoric at ee.tu-berlin.de

Phone:                         (+49 30) 314-23840

Fax:                     (+49 30) 314-23818

Postal address:          Technical University Berlin
                         Telecommunication Networks Group (TKN)
                         Einsteinufer 25, 10587 Berlin

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