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Anonymous
(Unregistered)Tue 04-Jan-11 10:49:22
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Through-put and actually connect speed


[link to this post]
 
Ok these are my connect status from my o2 router.

DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 1,395 / 16,128
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 12.0 / 18.5
Line Attenuation (Up/Down) [dB]: 15.5 / 31.0
SN Margin (Up/Down) [dB]: 3.5 / 3.0
Vendor ID (Local/Remote): TMMB / BDCM
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 0 / 0
FEC Errors (Up/Down): 0 / 0
CRC Errors (Up/Down): 0 / 0
HEC Errors (Up/Down): 0 / 0

Im asking about my through-put as my speed test results are showing 12.5meg but im connected on a 16meg line. So there seems to be about 4meg loss on the through-put.

Any ideas?


[IMG]http://www.speedtest.net/result/1096488333.png[/IMG]
Standard User RobertoS
(sensei) Tue 04-Jan-11 11:00:06
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Re: Through-put and actually connect speed


[re: Anonymous] [link to this post]
 
The expected throughput is between roughly 83% and 84% of the connection speed. So you should get between 13,300kbps and 13,500kbps.

The loss is TCP and ATM overheads, those are the data packaging protocols that chop the data up into packets and account for the other 17%-18%. The throughput speed is actual data.

If you were not on LLU before so had an IP Profile, then those overheads are part of the reason the IP Profile was always so much lower than your connection speed, as it included most of them.

Do you know there is an O2 forum here? If you have any other O2-specific questions you may get quicker answers there smile.

My broadband basic info/help site - www.robertos.me.uk
My domains,website and mail hosting - Tsohost. Internet connection - O2 Standard.
Standard User ian72
(knowledge is power) Tue 04-Jan-11 11:01:16
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Re: Through-put and actually connect speed


[re: Anonymous] [link to this post]
 
Speedtests are not necessarily the most reliable measure of throughput. If anything else is happening on the line then some throughput will be lost. There is an overhead on data that would lose some of the speed. A speedtest cannot necessarily use the whole of the bandwidth. etc.etc.

Try doing 4 or 5 downloads from good sites simultaneously and see what the combined speed is. That should give you more of an idea of the real world.


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Standard User yarwell
(sensei) Tue 04-Jan-11 13:48:10
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Re: Through-put and actually connect speed


[re: Anonymous] [link to this post]
 
Im asking about my through-put as my speed test results are showing 12.5meg but im connected on a 16meg line


wired or wireless ?

same at 07:30 ?

operating system ?

Phil

MaxDSL - goes as fast as it can and doesn't read the line checker first.

MaxDSL diagnostics
Are your kids pirates ? Limewire, Bearshare, Kazaa, BitTorrent, eMule are all tools of the trade.
Standard User krazykizza
(fountain of knowledge) Tue 04-Jan-11 13:52:46
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Re: Through-put and actually connect speed


[re: Anonymous] [link to this post]
 
Be happy with it as there are people getting a lot less!

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
AOL > Virgin Media > Tiscali > Falconnet > UKFSN > Norfolk Internet
2mbps > Shapped 512k > 1mbps! > 6.5mbps > 4.5mbps > 6.5mbps
ADSL Joy. 31db att, 9db SNR, EntaFail.
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