[net-gold] INTERNET: ACCESS: BROADBAND: Static Information on Broadband. You can do an Interactive Presentation from the Site. Please Share
- From: "David P. Dillard" <jwne@xxxxxxxxxx>
- To: Net-Gold -- Educator Gold <Educator-Gold@xxxxxxxxxxxxxxx>, Educator Gold <Educator-Gold@xxxxxxxxxxxxxxxx>, net-gold@xxxxxxxxxxxxx, Net-Gold <Net-Gold@xxxxxxxxxxxxxxx>, NetGold <netgold@xxxxxxxxxxxxxxx>, Net-Gold <net-gold@xxxxxxxxxxxxxxxx>, K-12ADMINLIFE <K12ADMIN@xxxxxxxxxxxxxxxxxxx>, K12AdminLIFE <K12AdminLIFE@xxxxxxxxxxxxxxx>, MediaMentor <mediamentor@xxxxxxxxxxxxxxx>, Digital Divide Diversity MLS <mls-digitaldivide@xxxxxxxxxxxxxxx>, NetGold <netgold@xxxxxxxxxxxxxxxx>, Net-Platinum <net-platinum@xxxxxxxxxxxxxxx>, Sean Grigsby <myarchives1@xxxxxxxxxxxxxxx>, Net-Gold <NetGold_general@xxxxxxxxxxxxxxxxx>, Temple Gold Discussion Group <TEMPLE-GOLD@xxxxxxxxxxxxxxxxxxx>, Temple University Net-Gold Archive <net-gold@xxxxxxxxxxxxxxxxxxx>, Health Lists -- Health Diet Fitness Recreation Sports Tourism <healthrecsport@xxxxxxxxxxxxxxxx>, Health Diet Fitness Recreation Sports <healthrecsport@xxxxxxxxxxxxxxx>, HEALTH-RECREATION-SPORTS-TOURISM@xxxxxxxxxxxxxxxxxxx
- Date: Wed, 6 Apr 2011 12:21:08 -0400 (EDT)
.
INTERNET: ACCESS: BROADBAND:
Static Information on Broadband.
You can do an Interactive Presentation from the Site.
Date: Tue, 5 Apr 2011 14:50:05 -0400
From: Bonnie Bracey <bbracey@xxxxxxx>
Reply-To: Net Gold Listserv List <NET-GOLD@xxxxxxxxxxxxxxxxxxx>
To: NET-GOLD@xxxxxxxxxxxxxxxxxxx
Subject: Static information on Broadband. You can do an Interactive
presentation from the site. Please share
a tool for your use. You can demonstrate the speed of Internet in your
area. You can input data to make this a grassroots initiative , sharing
your data with others.
Visualization of broadband performance using M-Lab data
The charts presented in this page visualize various metrics computed using
the data collected by NDT, one of the M-Lab tools. The values are
visualized across countries, states, and cities within a particular month.
A team at Google created these charts using the the NDT data publicly
available on Google Storage. This document provides a detailed description
of how the metrics are defined.
Instructions (that apply to all the graphs in this page)
* Select “Explore data” on each map for more visualization options.
* You can change the month displayed by adjusting the bar at the bottom
of the chart.
* You can change the location displayed by clicking the blue arrow in the
“Compare” box (upper-left), and selecting any country, state, or city.
* You can select different chart types, by selecting one of the icons
above the “Compare” box.
List of the charts:
* Download and upload throughput
* Network- and client-limited tests
* Round Trip Time
A few notes to keep in mind before exploring these maps:
* Different speed tests measure network speed in different ways,
producing some variations in reported results. NDT is an open-source test
made available on the M-Lab
platform. A description of the NDT methodology is available here.
* Server proximity can impact the accuracy of measured results. Being far
from a testing server can results in a lower values of measured speed.
M-Lab has 48 servers
throughout the US, Europe, and Australia, and we have chosen only to
display speed measurements from these and nearby areas on the map.
* Any location in which we have insufficient data (fewer than 200 unique
client IP addresses conducting measurements) is not visualized. The
location name will be grayed
out in the menu.
MEDIAN DOWNLOAD/UPLOAD THROUGHPUT MAP
Instructions
* The above chart shows the median download throughout aggregated by
country.
* The download throughout is the maximum amount of data that can be
transferred from an M-Lab server to the user's device, in this case during
the run of the NDT test.
* Each bubble corresponds to a country. When you mouse over any bubble,
the chart displays the name of the corresponding country.
* The color of the bubble represents the country download throughout,
while the size of the bubble is proportional to the number of clients that
run the NDT test in that
country.
NETWORK/HOST CONGESTION MAP
Instructions
* The chart above shows a distribution of countries by the median time
spent by tests (run in those countries) in network or receiver-limited
state.
* A test is in network limited state when the throughout is limited by
congestion in the network. On the other hand, a test is in
receiver-limited state when the user's
device limits the throughout (for example, due to configuration
errors).
* Each bubble corresponds to a country. When you mouse over any bubble,
the chart displays the name of the corresponding country.
* The color of the bubble represents the country download throughout,
while the size of the bubble is proportional to the number of clients that
run the NDT test in that
country.
* Bubbles at the top left correspond to countries where throughout is
mostly limited by network congestion, while bubbles at the bottom right
correspond to countries
where throughout is mostly limited by the user's device.
Notes:
* In testing network and receiver limitations, NDT attempts to create
congestion between a user’s machine and the M-Lab server. This serves as a
“stress test” detecting
the bottleneck of a connection as well as possible weak points.
* While running, a test can be in 3 states: network limited, receiver
limited, and server limited. By design the latter state should not happen
on the M-Lab platform
(i.e., tests are never server limited, because M-Lab servers are
specially provisioned). Therefore, the time ratio spent by each test in
either net-limited and
client-limited state.
ROUND TRIP TIME
Instructions:
* The chart above ranks countries by their median Round Trip Time (RTT)
* The RTT represents the amount of time that it takes for data to travel
from the user's device (that is running the test) to an M-Lab server and
back.
* Each bar corresponds to a country. When you mouse over any bar, the
chart displays the name of the correspondent country and (on the right)
its RTT value. The color of
the bar represents it’s average speed, with red being the fastest and
blue being the slowest.
Attachment
Size
ComputeBroadbandThroughputUsingM-LabData.pdf
98.69 KB
Other related posts:
- » [net-gold] INTERNET: ACCESS: BROADBAND: Static Information on Broadband. You can do an Interactive Presentation from the Site. Please Share - David P. Dillard
