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Investigating Internet Performance

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Investigating Internet Performance USF 2003 RET Program Tahvia Shaw WHO AM I? Topics Introduction and Background Project Goals Internet Performance Internet Growth ... – PowerPoint PPT presentation

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Title: Investigating Internet Performance


1
Investigating Internet Performance
  • USF 2003 RET Program
  • Tahvia Shaw

2
WHO AM I?
3
(No Transcript)
4
Topics
  • Introduction and Background
  • Project Goals
  • Internet Performance
  • Internet Growth
  • Measuring Internet Performance
  • Taking it back to the classroom
  • StudyWorks!
  • Summary

5
Introduction and Background
  • Internet performance is a hot issue in Computer
    Science. Why???
  • There are many factors that are being measured
    and investigated to determine the effectiveness
    of the Internet System.
  • We can perform simple experiments in the middle
    school classroom.

6
Project Goals
  • To have middle school students study real
    problems in the area of Computer Science.
  • Spark an interest in mathematics and science.
  • Learn basic Computer Science and understand the
    issues that are being researched.
  • Develop basic Computer Science experiments for
    middle school students.
  • Use a mathematics tool to analyze these
    experiments.

7
Internet Performance
  • Factors of Internet performance include but are
    not limited to
  • Geographic location
  • Connectivity
  • Network infrastructure and speed
  • Internet performance is directly affected by the
    rate in which the Internet has grown. The more
    hosts on the Internet, the more traffic and
    congestion.

FOR MORE INFO...
Network wizards, Nielsen Net ratings,
www.mids.org, www.internettrafficreport.com
8
Internet Growth
  • Source
  • Internet Software consortium (www.isc.org)

9
Transmitting information
Source and
Host Server
Host Client
Destination
address
Ethernet
(cable, link)
Packets
(server to user)
The client requests information from the server
and the server sends the information back to the
client in the form of packets. Packets can be
lost or delayed.
10
Measuring Internet Performance
  • The PING program sends a small packet of
    information
  • to a specified computer, which then sends a reply
    back to
  • your computer.

Gives the RTT in milliseconds
11
Measuring Internet Performance Cont.
  • The Tracert (Trace Route) program is a
    route-tracing tool that is used to
  • determine the path a packets takes to reach a
    destination.

USF
Yahoo
12
Measuring Internet Performance Cont.
  • We will use PING and Tracert to determine
  • Latency
  • Packet loss
  • Reachability

13
Latency
  • Latency aka Delay The round trip delay time
    between the
  • time the host sends a packet to the destination
    and the
  • timethe host receives a response packet.

14
Packet loss
  • Packet loss A measure of measurement packets
    sent
  • to a destination that do not produce
    corresponding
  • return packets those missing packets are lost
    packets.
  • Packet loss can measure the effectiveness of a
  • particular website on the Internet. Some of the
    factors
  • that effect the packet loss are
  • Size of packet ( in bytes)
  • Time of day
  • Internet congestion

15
Packet loss cont.
FOR MORE INFO...
www.mids.org
16
Reachability
  • Reachability If the host responds to at least
    one of the
  • measurement packets.

17
Taking it to the classroom
  • We can isolate those three measures of internet
    performance and create activities and experiments
    that middle school students will understand.
  • We can use internet delay as our factor and
    investigate internet performance by using tools
    such as PING and Trace routes to measure latency,
    packet loss and reachability and draw conclusions
    on how they effect the internet.

FOR MORE INFO...
Lessons will be available soon on USFs website
as well as TCSs website. www.tcstornadoes.com
18
Taking it to the classroom
  • Students will investigate Internet performance by
    testing causes of delay.
  • Compare geographic distance to PING RTT. We will
    PING cities around the world. (see lesson plan
    for IP addresses)
  • Compare packet size to PING RTT.
  • Students will use Tracert to troubleshoot when
    packets are lost to determine where a packet
    stopped.

19
Taking it to the classroom
20
Taking it to the classroom cont.
  • Students will be introduced to current ongoing
    research on computer science issues that effects
    them personally.
  • Students will learn how information is
    transported on the Internet and how effective or
    reliable the Internet is in responding and
    delivering the information.
  • Students will learn how to collect raw data, plot
    graphs and analyze the data.

21
StudyWorks
  • StudyWorks is a math resource tool based off
  • MathCAD. Students will use this program to create
  • graphs and analyze data.
  • Teachers can also create worksheets and problems
  • for students to solve in StudyWorks.

22
StudyWorks Example
23
Conclusion
  • Interesting topic for students and myself.
  • Many mathematic concepts from graphing to
    percents.
  • Basic computer science skills from using the
    command screen to performing PINGS.
  • Understanding how information travels on the
    internet.
  • Understanding efficiency.

24
Resources
  • www.mids.org
  • http//libra.unitbv.ro/admini/tcpip_tools.htm
  • www.gigabytex.com
  • www.cyberatlas.internet.com
  • www.isc.org/ds
  • www.mit.edu/people/mkgray.net
  • http//navigators.com/stats.html
  • Network Wizards
  • The Center for Next Generation Internet

25
Acknowledgements
  • Thank you Dr. Kenneth Christensen for
  • the opportunity to participate in this
  • program.
  • I would also like to thank Dr. Carlos Smith
  • and the USF sponsored RET Program for
  • allowing me to join their group.
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