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RE: Speed Test Results
From: Brandon Kim <brandon.kim () brandontek com>
Date: Fri, 23 Dec 2011 09:46:59 -0500


I love using speedtest. My FIOS at home is 25/25. And speedtest consistently hits that mark
so I know FIOS is giving me what I paid for.

When Verizon was having internet issues last week my numbers were bad. 

Like someone else said, I would not use it much more for quick gauge. To get more granular info
you should be using other tools....



Subject: Re: Speed Test Results
From: james.cutler () consultant com
Date: Fri, 23 Dec 2011 09:02:01 -0500
To: nanog () nanog org


On Dec 23, 2011, at 8:07 AM, Paul Stewart wrote:

In my opinion they are only "somewhat reliable" if they are on your network
or very close to your network -we operate one of the speedtest.net sites and
for our own eyeball traffic find it to be a "reasonable indicator" of what
kind of speeds the customer is getting.

To put it a different way, if a customer is getting 20X1 Internet service
and the speedtest shows 17 X 0.8 then case closed - if they are getting a
speedtest result of 5 X 0.5 then our helpdesk will take a further look -
this is really in rough terms...

Paul

From the consumer viewpoint:

No single data point should be extrapolated to infinity, but comparing problematic behavior with "normal" behavior is 
a standard process across all fields.

Speed tests from several locations done regularly give a baseline for performance.  Major departure from expected 
numbers from a set of speed test sites can be regarded as an indicator of local loop problems. Did you know that 
local loops suffer from backhoe fade?  And, DSLAMS fail.

In my home office, speed tests are just another useful diagnostic helping to locate problem areas - just like in 
Paul's example.  DSLReports line monitoring service is a similarly useful tool.

James R. Cutler
james.cutler () consultant com





                                          

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