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Standard User cscsonline
(learned) Thu 24-Nov-11 08:51:14
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Speedtests


[link to this post]
 
I have BT Infinity and recently had my VLINK modem changed because of potential overheating.
Since then I have done speed tests at Think Broadband and speedtest.net
Today at thinkbroadband.com I got a download rewarding of 20.8 Mbps whereas at speedtest.net (which BT uses) I got 37Mbps.
How can these tests vary so much in the space of a minute?

cscsonline on an Intel iMac using
BT Infinity 35Mbps
using BT Home Hub 3 and Openreach VDSL modem
formerly on O2 Premium, Be Unlimited, Zen 8000 Active
Administrator MrSaffron
(staff) Thu 24-Nov-11 09:31:53
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Re: Speedtests


[re: cscsonline] [link to this post]
 
Use a tool like tbbmeter to show the profile of the downloads during the tests.

If the graph is spiky then speedtest.net is more likely to show a higher result due to its sampling. We take a simpler longer term average to the results.

http://www.farina1.com/vary2.jpg shows this

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User cscsonline
(learned) Thu 24-Nov-11 09:35:08
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Re: Speedtests


[re: MrSaffron] [link to this post]
 
Thanks Andrew. I'm on a Mac so tbbMeter is not going to work for me.

cscsonline on an Intel iMac using
BT Infinity 35Mbps
using BT Home Hub 3 and Openreach VDSL modem
formerly on O2 Premium, Be Unlimited, Zen 8000 Active


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Standard User RobertoS
(sensei) Thu 24-Nov-11 09:54:37
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Re: Speedtests


[re: cscsonline] [link to this post]
 
BT does not use speedtest.net.

One of the links is http://speedtester.bt.com which may be confusing you. Speedtest.net uses the Ookla engine, observed in nearly every tester except BT and tbb.

Try the BT one I just linked to.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - IDNet Home Starter Fibre. Live BQM.

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Administrator MrSaffron
(staff) Thu 24-Nov-11 10:14:17
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Re: Speedtests


[re: cscsonline] [link to this post]
 
Ok our flash based tester at
http://www.thinkbroadband.com/speedtest/broadband.html produces a graph at the end and some have said speedtest.net does, but on current one I cannot see it

Andrew Ferguson, andrew@thinkbroadband.com
www.thinkbroadband.com - formerly known as ADSLguide.org.uk
The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User cscsonline
(learned) Thu 24-Nov-11 13:01:04
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Re: Speedtests


[re: RobertoS] [link to this post]
 
Roberto,

You are correct and thanks for correcting me.
Speedtest at http://speedtester.bt.com/ gives me 35Mbps and 7.9Mbps

cscsonline on an Intel iMac using
BT Infinity 35Mbps
using BT Home Hub 3 and Openreach VDSL modem
formerly on O2 Premium, Be Unlimited, Zen 8000 Active
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