[Tmrg] Traffic generators

[SANGTAE HA]

Lachlan,

Joel clarified the scope of Harpoon. Thank you for clarifying this, Joel.
Then, somehow we need to consider the other candidate, Tmix, which we
discussed at the meeting.

Tmix[1] paper says that it supports source-level and session-level
replaying of the trace, so it is expected to support both short-lived
(HTTP and VoIP) and long-lived (FTP and P2P) flows. The connection
vectors which Tmix builds from the trace can be used in NS2 and over
testbed, so we can use the same traffic for both environments.

But, I recall that the implementation of Tmix for Linux was not ready
a year ago (only available for FreeBSD platform at that time).
Also it is not clear how many machines are required to generate the
traffic based on the trace, which is also important for us.

If we get these answers from the authors, we are right before the
selection of the traffic generator for TCP testing.
I am CCing to Michele, one of the author of this paper, for the latest
status of Tmix.

Thanks,
Sangtae

[1] Tmix: A Tool for Generating Realistic TCP Application Workloads in
ns-2, http://www.sigcomm.org/ccr/drupal/?q=node/50


> On Nov 21, 2007 8:49 PM,  <jsommers at cs.wisc.edu> wrote:
> Yes, file arrival times and file sizes are specified when generating
> traffic with Harpoon.  Indeed, sessions are intended to mimic longer-time
> scale variations in traffic volume.  They are *not* intended to model
> anything about the web, or web sessions.