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Standard User ajseeds
(newbie) Tue 09-Jun-20 10:20:36
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Upload speeds on TBB Speed test


[link to this post]
 
I have been trying to measure upload throughput on several ADSL/ADSL2+ lines. Sync speeds on the lines range from 732kb/s on ADSL to 1.02Mb/s on ADSL2+. The issue I have is that Ookla speed-tests report upload speeds of around 600kb/s on a 732kb/s, but the TBB test reports a speed of 300kb/s to 400kb/s on the same line. On the ADSL2+ lines, Ookla again reports speeds faster than TBB. What is the reason for the difference and which result is more nearly correct?
Administrator MrSaffron
(staff) Tue 09-Jun-20 11:55:01
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Re: Upload speeds on TBB Speed test


[re: ajseeds] [link to this post]
 
Without link to the Thinkbroadband results hard to say much, might just be difference between using mean and median averages

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User ian72
(eat-sleep-adslguide) Tue 09-Jun-20 11:55:38
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Re: Upload speeds on TBB Speed test


[re: ajseeds] [link to this post]
 
Ookla is likely reporting on the peak speed seen whereas TBB takes more of an average. So, it depends on what question you are trying to answer.

If you can post links to the TBB tests then people will be able to comment more on the likely difference - it is probably that the speed is taking time to ramp up or the line is seeing variable speeds and the way a number of speed tests operate they hide this by reporting the peak rather than showing speeds over the whole test.


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Standard User ajseeds
(newbie) Tue 16-Jun-20 10:33:27
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Re: Upload speeds on TBB Speed test


[re: MrSaffron] [link to this post]
 
Thanks for your help. Here's Ookla.
Here's TBB

Both the dynamic and the average results are about 50% lower on TBB.

Does TBB calculate arithmetic mean or median as the result?

Regards,

Alwyn
Standard User ajseeds
(newbie) Tue 16-Jun-20 10:36:56
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Re: Upload speeds on TBB Speed test


[re: ajseeds] [link to this post]
 
In reply to a post by ajseeds:
Thanks for your help. Here's Ookla.
https://www.speedtest.net/result/9612667704
Here's TBB
https://www.thinkbroadband.com/speedtest/15922997116...
Both the dynamic and the average results are about 50% lower on TBB.

Does TBB calculate arithmetic mean or median as the result?

Regards,

Alwyn
Administrator MrSaffron
(staff) Tue 16-Jun-20 12:41:18
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Re: Upload speeds on TBB Speed test


[re: ajseeds] [link to this post]
 
Median

What is your routers upload sync speed?

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User ajseeds
(newbie) Tue 16-Jun-20 12:52:09
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Re: Upload speeds on TBB Speed test


[re: MrSaffron] [link to this post]
 
Thanks. Upload Sync. Speed is 1.02Mb/s on this line.

Regards,

Alwyn
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