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Standard User kaybee327
(newbie) Fri 12-Oct-12 02:36:16
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Difference in TBB Meter and dowload speedtest


[link to this post]
 
Installed TBB Meter an hour ago and it shows average download of about 3 Mbs with a single max of 8518Kbps which is a bit slow on a 24 meg service.

Download speedtest gives 11Mbps ( http://www.thinkbroadband.com/speedtest/results/id/1...
Flash download test shows 11.4Mbps

Why such a difference ?

Also ( off topic ) cant understand why some speedtest sites show 11 - 16 Meg and others show 2-6 Meg

Answers not in a plain brown envelope please

A frustrated

Keith
Administrator MrSaffron
(staff) Fri 12-Oct-12 09:57:16
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Re: Difference in TBB Meter and dowload speedtest


[re: kaybee327] [link to this post]
 
I would say 11.4 Meg is a bit slow for a 24 Meg service.

Key points

1. What speed is the modem connecting at? Maximum any test should show is 88.2% of that value.
2. Got a screenshot from tbb (it has a grab picture function built into it)
3. What mode is tbbmeter running in? (With Java updates lately it appears to be hiding some traffic when in the TCP/UDP monitoring modes), switching this off solves that.


As for speedtest differences

1. We use 1024 as K rather than the 1000. Changing soon.
2. We report average, rather than the peak/burst speed.
3. Different servers are located in different places and the ISP peering and state of the internet can affect speeds

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 kaybee327
(newbie) Sat 13-Oct-12 14:54:25
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Re: Difference in TBB Meter and dowload speedtest


[re: MrSaffron] [link to this post]
 
Mr Saffron thank you for reply.

Router was synced at 18438 but lunchtime yesterday dropped to the following

Vendor: Linksys
ModelName: WAG120N
Firmware Version: A1.00.16 , 2010-08-06T14:08:04
GUI Version: A1.00.16_007
Boot Version: 1.0.37-5.4
Hardware Version: 0.01

--- DSL Information ---
DSL Driver Version: 3.4.4.10.0.1
DSL VPI/VCI: 0/38
DSL Status: Up
DSL Mode: ADSL2+
DSL Channel: 0
DSL Upstream Rate: 1020 kbps
DSL Downstream Rate: 16403 kbps
Down up
DSL Noise Margin: 122 dB 86 dB
DSL Attenuation: 63 dB 164 dB
DSL Transmit Power: -386 dBm -450 dBm

Had problem with TBB in windows 7 reinstalled screen grab can be seen at https://skydrive.live.com/redir?resid=36E2E494E7FE5E...

Have TCP/UDP disabled but can not access types of traffic to be displayed - click on it nothing happens mouse over nothing happens Think I am jinxed

I agree with the use of 1024 please do not change ( sooner have it right than easy doh )

Keith


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Administrator MrSaffron
(staff) Sat 13-Oct-12 14:59:59
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Re: Difference in TBB Meter and dowload speedtest


[re: kaybee327] [link to this post]
 
When TCP/UDP is disabled some menus will not work, because then need the packet sniffer driver loaded, that is part of the TCP/UDP splitting system.

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 XRaySpeX
(eat-sleep-adslguide) Sat 13-Oct-12 15:10:14
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Re: Difference in TBB Meter and dowload speedtest


[re: kaybee327] [link to this post]
 
In reply to a post by kaybee327:
I agree with the use of 1024 please do not change ( sooner have it right than easy doh )
K = 1024 is wrong! Comms is measured in bits and 1000 is by standard denoted by K.

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 19 Meg WBC
Standard User XRaySpeX
(eat-sleep-adslguide) Sat 13-Oct-12 15:16:17
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Re: Difference in TBB Meter and dowload speedtest


[re: kaybee327] [link to this post]
 
In reply to a post by kaybee327:
Down up
DSL Attenuation: 63 dB 164 dB
Something fishy there! I presume units are in 0.1dBs but usually Down attn. about = 2 x Up attn. Can we believe other readings?

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 19 Meg WBC
Standard User kaybee327
(newbie) Sat 13-Oct-12 16:56:39
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Re: Difference in TBB Meter and dowload speedtest


[re: XRaySpeX] [link to this post]
 
Yes generally I agree with you but a byte is 8 bits not 10 ( yes I know about stop bits ) that is why I say 1024 is correct.


BUT I will accept defeat and majority rule

Keith
Standard User XRaySpeX
(eat-sleep-adslguide) Sat 13-Oct-12 17:22:15
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Re: Difference in TBB Meter and dowload speedtest


[re: kaybee327] [link to this post]
 
In reply to a post by kaybee327:
but a byte is 8 bits not 10
But Bytes are not involved in comms at all; it's computer memory and processors that are (nowadays) organised in 8-bit Bytes. Hence Bytes are irrelevant to data transmission.

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 19 Meg WBC
Standard User RobertoS
(sensei) Sat 13-Oct-12 17:32:11
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Re: Difference in TBB Meter and dowload speedtest


[re: kaybee327] [link to this post]
 
[cough]
Stop bits are to do with simple serial data transmission, not TCP/IP and/or ATM protocols.

The difference between Kb = 1024 and Kb = 1000 is to do with the difference between transmission speeds and data (disc) storage methods. Data storage is generally handled in units that are multiples of 2, going back at least to 256-bit sectors and 4-sector blocks = 1024 bits = 1kb.

That arose from simple ease of use and speed/compactness of code working in binary. The code and associated time overhead to convert to decimal arithmetic within the disc controllers to deal with seeking/reading/writing data was not practicable when the standards were developing.

k = 1024 is still correct for data storage, i.e. file sizes. It is incorrect for data transmission speeds. File downloaders often report in kBytes where it is permissible for k to equal 1024, so long as this is made clear, for easy correlation between the download speed and the file size being transferred, but speed testers dealing with bit or byte transmission speeds should be using 1000. Bytes are not necessarily 8 bits for all data transmission. Only for what we normally deal with on the internet.

My broadband basic info/help site - www.robertos.me.uk | Domains,website and mail hosting - Tsohost.
Connection - Plusnet Extra Fibre (FTTC). Sync ~ 57.4/14.6Mbps @ 600m. - BQM

"Where talent is a dwarf, self-esteem is a giant." - Jean-Antoine Petit-Senn.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Allergy information: This post was manufactured in an environment where nuts are present. It may include traces of understatement, litotes and humour.
Standard User XRaySpeX
(eat-sleep-adslguide) Sat 13-Oct-12 18:01:00
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Re: Difference in TBB Meter and dowload speedtest


[re: RobertoS] [link to this post]
 
[cough]
In reply to a post by RobertoS:
That arose from simple ease of use and speed/compactness of code working in binary
That arose from simple ease of use/construction and speed/compactness of electrical currents being ON or OFF in hardware.

1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 19 Meg WBC
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