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Standard User adslmax
(knowledge is power) Fri 13-Sep-19 13:31:30
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Fibre are fastest today from FTTC


[link to this post]
 
I have noticed my FTTC has gone fastest ever. Has Openreach tweak FTTC?

https://www.thinkbroadband.com/speedtest/15683775836...
Standard User adslmax
(knowledge is power) Fri 13-Sep-19 13:43:36
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Re: Fibre are fastest today from FTTC


[re: adslmax] [link to this post]
 
False alarm. The speedtest are unreliable one from thinkbroadband.

The speedtest.net are spot on correct. https://www.speedtest.net/result/8586871506
Administrator MrSaffron
(staff) Fri 13-Sep-19 18:15:44
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Re: Fibre are fastest today from FTTC


[re: adslmax] [link to this post]
 
Yes false alarm as other tests you ran a few minutes later look good http://tbb.st/1568378133191149355

There was a spike in some of the others at the start http://tbb.st/1568377969588391055 but the figures come out reasonable, i.e. efforts to mitigate the occasional burst at the start due to browsers/anti virus software etc do work but are not 100% bullet proof.

An interesting observation is that when there is the spike there is also increased average latency too, so something was probably happening on the connection/PC

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.


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Standard User adslmax
(knowledge is power) Fri 13-Sep-19 21:13:12
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Re: Fibre are fastest today from FTTC


[re: MrSaffron] [link to this post]
 
I have disabled anti virus and got this speed spot on

https://www.thinkbroadband.com/speedtest/15684055032...
Standard User CarlTSpeak
(learned) Fri 13-Sep-19 21:39:30
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Re: Fibre are fastest today from FTTC


[re: adslmax] [link to this post]
 
Do you really have nothing better to do?

Building better networks, not just faster ones.
Standard User Alucidnation
(member) Sun 15-Sep-19 17:39:33
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Re: Fibre are fastest today from FTTC


[re: CarlTSpeak] [link to this post]
 
In reply to a post by CarlTSpeak:
Do you really have nothing better to do?


laugh laugh laugh

Draytek 2862.
Standard User bigluap
(learned) Sun 15-Sep-19 20:20:52
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Re: Fibre are fastest today from FTTC


[re: adslmax] [link to this post]
 
REF: Speedtest.net

When I use this I get silly results as it connects to IBM about 1 mile away. Not a true indication of real world internet.

Used to use a american service which has since been withdrawn, you could connect to servers that were used for the Winter Olympics, at about 4k miles that was a true test. It was fibre, via Berlin and then the trans atlantic cable to the US then fibre to the server.

nb it might say newbie, Been building PCs since 386SX25 late 80's
My network is VM connection 200mbit Hub3 - Gigabit routers - Netgear Nighthawk R8000 & R7800 2 x cat5e cables to work room, have 3 gigabit switches at key points. Routers give me 3x 2.4 & 5 5.0 GHz WiFi channels - one for each device.
Standard User CarlTSpeak
(learned) Mon 16-Sep-19 06:15:43
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Re: Fibre are fastest today from FTTC


[re: bigluap] [link to this post]
 
In reply to a post by bigluap:
REF: Speedtest.net

When I use this I get silly results as it connects to IBM about 1 mile away. Not a true indication of real world internet.

Used to use a american service which has since been withdrawn, you could connect to servers that were used for the Winter Olympics, at about 4k miles that was a true test. It was fibre, via Berlin and then the trans atlantic cable to the US then fibre to the server.


I'm going to go out on a limb here and suggest it's unlikely that you are connecting to that server a kilometre away via anything like a direct route.

With the modern Internet the vast majority of the content you're consuming is probably being fed to you by content delivery networks within the British Isles.

Building better networks, not just faster ones.
Standard User candlerb
(experienced) Mon 16-Sep-19 14:30:14
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Re: Fibre are fastest today from FTTC


[re: CarlTSpeak] [link to this post]
 
speedtest.net and similar are not fed from CDN, but are direct streams from a selected remote server.

speedtest.net is designed to make your ISP look good. It does this by (a) choosing a server with the smallest Round Trip Time, and (b) opening 6 TCP streams in parallel.

The maximum achievable throughput you can achieve on a single TCP stream is very sensitive to RTT and packet loss. The formula is here.

On a LAN with 1ms RTT, even packet loss as high as 1% is barely noticable. A single TCP stream would have its throughput limited to:

1460 / (0.001 * sqrt(0.01)) * 8 = 116.8 Mbps

But on a connection with a 100ms round-trip time, even packet loss as low as 0.01% (1 packet in 10,000) will limit a TCP stream to one tenth of that speed, i.e. 11.68Mbps. To match it, you would need packet loss of 0.0001% (1 packet in a million)

Each TCP stream reacts to packet loss independently though, so six TCP streams together can use of six times as much bandwidth.
Standard User CarlTSpeak
(learned) Mon 16-Sep-19 14:52:58
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Re: Fibre are fastest today from FTTC


[re: candlerb] [link to this post]
 
Thanks for that. I didn't suggest speedtest.net uses a CDN and wide area network performance, including things like considering BDP, are my day job but appreciate it.

Building better networks, not just faster ones.
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