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Research Plan
Alok Shriram is a PhD student studying with Jasleen Kaur at the University of North Carolina - Chapel Hill. During summer 2004, Alok is performing e2e bandwidth estimation research at CAIDA. His research plan is below.
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Research Sponsored by:

Alok Shriram's Summer 2004 Research Plan

Tools to test:

  • Pathload
  • Pathchirp
  • Spruce
  • Abing
  • Iperf

Tools not to test any more (based on their prior substandard performance):

  • ABw
  • bprobe
  • cprobe
  • clink
  • pathchar
  • pchar
  • pipechar
  • tracerate

Laboratory measurements

Perform three sets of experiments using different types of cross-traffic. Test each tool in both directions.
  1. SmartBits - artificially generates traffic, maintaines a predefined load level
    • Run tests increasing the load in 10% steps from 10% up to 90%.
    • Each tool should run continuously for a given amount of time (currently, 5 min).
    • Plots to make:
      - for each tool: the average & standard deviation of obtained values vs. actual available bandwidth, both directions on one graph (5 graphs combined in one panel)
      - tool run time vs. actual available bandwidth (all tools in one graph)
      - "consumed bandwidth"
      - # of bytes sent by tool divided by run time vs. actual available bandwidth (all tools in one graph)
      - IAT distribution of SmartBits traffic
      - packet size distribution of SmartBits traffic
  2. tcpreplay - plays back a real traffic sample collected elsewhere.
    • Use the same sample for all tools.
    • Estimate the load level using CoralReef/NeTraMet.
    • Each tool should run continuously for a given amount of time (currently, 5 min).
    • Plots to make:
      - actual available bandwidth (per 1 sec) and each individual measurement for each tool vs. time (possibly, all tools in one graph, but if it will be too crowded, then change somehow)
      - IAT distribution of tcp-replay traffic - packet size distribution of tcp-replay traffic
  3. HTTP request generator - simulates HTTP traffic from a varying number of browsers.
    • Use the same set of conditions for all tools.
    • Estimate the load level using CoralReef/NeTraMet.
    • Each tool should run continuously for a given amount of time (currently, 5 min).
    • Plots to make:
      - actual available bandwidth (per 1 sec) and each individual measurement for each tool (possibly, all tools in one graph, but if it will be too crowded, then change somehow)
      - IAT distribution of simulated HTTP traffic
      - packet size distribution of simulated HTTP traffic

Real-Path Measurements

We will run the best performing (in the lab) tools on the ESnet network.
  • Obtain accounts on two hosts in the ESnet network, at SLAC and at ORNL.
  • Install tools.
  • Do a single "pre-test" run of each tool.
  • Run measurements.
    - Possible schedule: run each tool 10 times every hour for 24 hours.
    - Other schedules TBD.
  • How can we get an independent measure of real ESnet traffic in order to calibrate/verify our results?
  Last Modified: Tue Oct-8-2019 11:20:56 PDT
  Page URL: http://www.caida.org/projects/bwest/reports/alokRplan.xml