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[lewisp8]

I've recently had a new broadband installed by a ISP called zzoomm, I am supposed to be getting a 2Gb symmetrical line but the speed-test results I've been getting are inconsistent. I am connected to the router to my laptop with a 2.5Gb ethernet connection so I should be able to achieve the full 2Gb connection. However depending on the speed test I do I'm getting results that vary from 800Mb to 2Gb but I'm unsure why. Can anyone provide any insight?

All the below were tested within 5 minutes of each other.

Speedtest.net:


Think Broadband:


Fast.com

[burakkucat]

I am connected to the router to my laptop with a 2.5Gb ethernet connection . . .

How certain are you that the network interface of your laptop computer and the computer's OS' networking stack are capable of handling 2Gbps plus speeds?

[lewisp8]

I'm not certain, the computer I'm testing it on is a 2021 MacBook Pro with the M1 Pro processor. I've seen similar machines with a 10 Gbe thunderbolt network adapters easily max out just below 10Gb/s. Running the tests doesn't seem to use significant system resources.

[burakkucat]

I'm not familiar with Apple hardware but now that you have specified the system being used for the tests perhaps other members will be able to comment.

[lewisp8]

I think you may have been on to something before, I've connected to a FTP server and tried to download a large (100GB) file. Looking at the network throughput it is bang on at 250MB/s or 2Gb/s. I think there must be a bottleneck with browser based speed tests (at least on a Mac with my OS) where for some reason it can't seem to achieve the full throughput. 

[Alex Atkin UK]

Speedtest by Ookla is in the App Store, though I'd be more inclined to blame there being very few servers that can handle over a Gigabit.

[XGS_Is_On]

I see Talk Straight's server in your speed test. That is on 10G and should be fine. Grab the app from the App Store. Ilkley / Talk Straight should be fine as should Community Fibre, London.

[lewisp8]

I see Talk Straight's server in your speed test. That is on 10G and should be fine. Grab the app from the App Store. Ilkley / Talk Straight should be fine as should Community Fibre, London.

Thanks, both of those servers seem to give me results varying between 1.0Gb and 1.5Gb on the speed test app. If I manually select the Swish Fibre, London I get 1960/1980 which is what I'd expect. I think my connection is definitely 2Gb, but just some servers aren't able to provide that or maybe there's something in the ISP's network that is a bottleneck for some servers and / or locations.

[meritez]

What does thinkbroadband.com/speedtest show

There's a 40 gigabit speed test here:
https://www.novoserve.com/speedtest

Though I cannot guarantee the peerings in-between can support your line speed.

[mofa2020]

Nperf provide speed test with both choosing cities and knowing server supported maximum link speed, I think this might give accurate test..

https://www.nperf.com/en/

[XGS_Is_On]

Most of those services aren't close to adequate for a 2G service even if no-one else is testing at the same time.

I just tested 2 that claimed to be on 10G and neither of them managed much over a gigabit. This via uncapped XGSPON that runs at 8G+ symmetrical.

[Alex Atkin UK]

What does thinkbroadband.com/speedtest show

There's a 40 gigabit speed test here:
https://www.novoserve.com/speedtest

Though I cannot guarantee the peerings in-between can support your line speed.

That seems to work quite well.

Code: [Select]

iperf3 -Rc speedtest.novoserve.com
Connecting to host speedtest.novoserve.com, port 5201
Reverse mode, remote host speedtest.novoserve.com is sending
[  5] local 192.168.10.2 port 60724 connected to 185.80.233.178 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  91.6 MBytes   768 Mbits/sec                 
[  5]   1.00-2.00   sec   108 MBytes   907 Mbits/sec                 
[  5]   2.00-3.00   sec   105 MBytes   882 Mbits/sec                 
[  5]   3.00-4.00   sec   107 MBytes   897 Mbits/sec                 
[  5]   4.00-5.00   sec   106 MBytes   887 Mbits/sec                 
[  5]   5.00-6.00   sec   106 MBytes   890 Mbits/sec                 
[  5]   6.00-7.00   sec   107 MBytes   896 Mbits/sec                 
[  5]   7.00-8.00   sec   107 MBytes   894 Mbits/sec                 
[  5]   8.00-9.00   sec   106 MBytes   893 Mbits/sec                 
[  5]   9.00-10.00  sec   106 MBytes   885 Mbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.03 GBytes   883 Mbits/sec  28804             sender
[  5]   0.00-10.00  sec  1.02 GBytes   880 Mbits/sec                  receiver

Both WANs balanced:

Code: [Select]

iperf3 -Rc speedtest.novoserve.com -P 4
Connecting to host speedtest.novoserve.com, port 5201
Reverse mode, remote host speedtest.novoserve.com is sending
[  5] local 192.168.10.2 port 58934 connected to 185.80.233.178 port 5201
[  7] local 192.168.10.2 port 58950 connected to 185.80.233.178 port 5201
[  9] local 192.168.10.2 port 58954 connected to 185.80.233.178 port 5201
[ 11] local 192.168.10.2 port 58968 connected to 185.80.233.178 port 5201
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  63.4 MBytes   532 Mbits/sec                 
[  7]   0.00-1.00   sec  15.6 MBytes   131 Mbits/sec                 
[  9]   0.00-1.00   sec  33.2 MBytes   278 Mbits/sec                 
[ 11]   0.00-1.00   sec  10.7 MBytes  89.9 Mbits/sec                 
[SUM]   0.00-1.00   sec   123 MBytes  1.03 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   1.00-2.00   sec  65.2 MBytes   547 Mbits/sec                 
[  7]   1.00-2.00   sec  27.2 MBytes   228 Mbits/sec                 
[  9]   1.00-2.00   sec  41.6 MBytes   349 Mbits/sec                 
[ 11]   1.00-2.00   sec  20.9 MBytes   175 Mbits/sec                 
[SUM]   1.00-2.00   sec   155 MBytes  1.30 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   2.00-3.00   sec  57.3 MBytes   481 Mbits/sec                 
[  7]   2.00-3.00   sec  26.0 MBytes   218 Mbits/sec                 
[  9]   2.00-3.00   sec  52.7 MBytes   442 Mbits/sec                 
[ 11]   2.00-3.00   sec  23.2 MBytes   194 Mbits/sec                 
[SUM]   2.00-3.00   sec   159 MBytes  1.33 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   3.00-4.00   sec  54.8 MBytes   459 Mbits/sec                 
[  7]   3.00-4.00   sec  26.7 MBytes   224 Mbits/sec                 
[  9]   3.00-4.00   sec  53.9 MBytes   452 Mbits/sec                 
[ 11]   3.00-4.00   sec  24.3 MBytes   203 Mbits/sec                 
[SUM]   3.00-4.00   sec   160 MBytes  1.34 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   4.00-5.00   sec  51.1 MBytes   429 Mbits/sec                 
[  7]   4.00-5.00   sec  28.2 MBytes   236 Mbits/sec                 
[  9]   4.00-5.00   sec  58.4 MBytes   490 Mbits/sec                 
[ 11]   4.00-5.00   sec  27.3 MBytes   229 Mbits/sec                 
[SUM]   4.00-5.00   sec   165 MBytes  1.38 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   5.00-6.00   sec  49.3 MBytes   413 Mbits/sec                 
[  7]   5.00-6.00   sec  27.8 MBytes   233 Mbits/sec                 
[  9]   5.00-6.00   sec  60.0 MBytes   503 Mbits/sec                 
[ 11]   5.00-6.00   sec  26.8 MBytes   225 Mbits/sec                 
[SUM]   5.00-6.00   sec   164 MBytes  1.37 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   6.00-7.00   sec  55.5 MBytes   466 Mbits/sec                 
[  7]   6.00-7.00   sec  28.3 MBytes   238 Mbits/sec                 
[  9]   6.00-7.00   sec  54.7 MBytes   459 Mbits/sec                 
[ 11]   6.00-7.00   sec  28.7 MBytes   241 Mbits/sec                 
[SUM]   6.00-7.00   sec   167 MBytes  1.40 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   7.00-8.00   sec  52.9 MBytes   444 Mbits/sec                 
[  7]   7.00-8.00   sec  26.4 MBytes   222 Mbits/sec                 
[  9]   7.00-8.00   sec  55.5 MBytes   465 Mbits/sec                 
[ 11]   7.00-8.00   sec  25.8 MBytes   216 Mbits/sec                 
[SUM]   7.00-8.00   sec   161 MBytes  1.35 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   8.00-9.00   sec  51.6 MBytes   432 Mbits/sec                 
[  7]   8.00-9.00   sec  29.6 MBytes   248 Mbits/sec                 
[  9]   8.00-9.00   sec  57.7 MBytes   484 Mbits/sec                 
[ 11]   8.00-9.00   sec  29.2 MBytes   245 Mbits/sec                 
[SUM]   8.00-9.00   sec   168 MBytes  1.41 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  5]   9.00-10.00  sec  52.3 MBytes   438 Mbits/sec                 
[  7]   9.00-10.00  sec  27.0 MBytes   227 Mbits/sec                 
[  9]   9.00-10.00  sec  57.5 MBytes   483 Mbits/sec                 
[ 11]   9.00-10.00  sec  27.3 MBytes   229 Mbits/sec                 
[SUM]   9.00-10.00  sec   164 MBytes  1.38 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec   557 MBytes   467 Mbits/sec  52547             sender
[  5]   0.00-10.00  sec   553 MBytes   464 Mbits/sec                  receiver
[  7]   0.00-10.00  sec   529 MBytes   443 Mbits/sec  49284             sender
[  7]   0.00-10.00  sec   263 MBytes   220 Mbits/sec                  receiver
[  9]   0.00-10.00  sec   266 MBytes   223 Mbits/sec    0             sender
[  9]   0.00-10.00  sec   525 MBytes   441 Mbits/sec                  receiver
[ 11]   0.00-10.00  sec   247 MBytes   207 Mbits/sec    0             sender
[ 11]   0.00-10.00  sec   244 MBytes   205 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  1.56 GBytes  1.34 Gbits/sec  101831             sender
[SUM]   0.00-10.00  sec  1.55 GBytes  1.33 Gbits/sec                  receiver


[lewisp8]

What does thinkbroadband.com/speedtest show

There's a 40 gigabit speed test here:
https://www.novoserve.com/speedtest

Though I cannot guarantee the peerings in-between can support your line speed.

This seems to be a lot closer to what I'm expecting!

onnecting to host speedtest.novoserve.com, port 5206
Reverse mode, remote host speedtest.novoserve.com is sending
[  6] local 192.168.7.215 port 52259 connected to 185.80.233.178 port 5206
[  8] local 192.168.7.215 port 52260 connected to 185.80.233.178 port 5206
[ 10] local 192.168.7.215 port 52261 connected to 185.80.233.178 port 5206
[ 12] local 192.168.7.215 port 52262 connected to 185.80.233.178 port 5206
[ ID] Interval           Transfer     Bandwidth
[  6]   0.00-1.00   sec  56.5 MBytes   474 Mbits/sec                 
[  8]   0.00-1.00   sec  56.5 MBytes   473 Mbits/sec                 
[ 10]   0.00-1.00   sec  46.8 MBytes   392 Mbits/sec                 
[ 12]   0.00-1.00   sec  52.9 MBytes   444 Mbits/sec                 
[SUM]   0.00-1.00   sec   213 MBytes  1.78 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  6]   1.00-2.00   sec  50.6 MBytes   424 Mbits/sec                 
[  8]   1.00-2.00   sec  53.4 MBytes   448 Mbits/sec                 
[ 10]   1.00-2.00   sec  59.0 MBytes   495 Mbits/sec                 
[ 12]   1.00-2.00   sec  56.9 MBytes   477 Mbits/sec                 
[SUM]   1.00-2.00   sec   220 MBytes  1.84 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  6]   2.00-3.00   sec  52.5 MBytes   441 Mbits/sec                 
[  8]   2.00-3.00   sec  63.4 MBytes   532 Mbits/sec                 
[ 10]   2.00-3.00   sec  58.3 MBytes   489 Mbits/sec                 
[ 12]   2.00-3.00   sec  57.0 MBytes   478 Mbits/sec                 
[SUM]   2.00-3.00   sec   231 MBytes  1.94 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  6]   3.00-4.00   sec  48.8 MBytes   410 Mbits/sec                 
[  8]   3.00-4.00   sec  59.8 MBytes   502 Mbits/sec                 
[ 10]   3.00-4.00   sec  57.0 MBytes   478 Mbits/sec                 
[ 12]   3.00-4.00   sec  63.1 MBytes   529 Mbits/sec                 
[SUM]   3.00-4.00   sec   229 MBytes  1.92 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  6]   4.00-5.00   sec  49.5 MBytes   415 Mbits/sec                 
[  8]   4.00-5.00   sec  54.5 MBytes   457 Mbits/sec                 
[ 10]   4.00-5.00   sec  57.5 MBytes   482 Mbits/sec                 
[ 12]   4.00-5.00   sec  59.0 MBytes   494 Mbits/sec                 
[SUM]   4.00-5.00   sec   221 MBytes  1.85 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  6]   5.00-6.00   sec  55.8 MBytes   468 Mbits/sec                 
[  8]   5.00-6.00   sec  51.4 MBytes   432 Mbits/sec                 
[ 10]   5.00-6.00   sec  61.8 MBytes   519 Mbits/sec                 
[ 12]   5.00-6.00   sec  58.9 MBytes   495 Mbits/sec                 
[SUM]   5.00-6.00   sec   228 MBytes  1.91 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  6]   6.00-7.00   sec  56.2 MBytes   470 Mbits/sec                 
[  8]   6.00-7.00   sec  57.2 MBytes   479 Mbits/sec                 
[ 10]   6.00-7.00   sec  57.7 MBytes   483 Mbits/sec                 
[ 12]   6.00-7.00   sec  59.2 MBytes   495 Mbits/sec                 
[SUM]   6.00-7.00   sec   230 MBytes  1.93 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  6]   7.00-8.00   sec  55.5 MBytes   467 Mbits/sec                 
[  8]   7.00-8.00   sec  55.5 MBytes   466 Mbits/sec                 
[ 10]   7.00-8.00   sec  57.3 MBytes   482 Mbits/sec                 
[ 12]   7.00-8.00   sec  57.6 MBytes   484 Mbits/sec                 
[SUM]   7.00-8.00   sec   226 MBytes  1.90 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  6]   8.00-9.00   sec  55.6 MBytes   466 Mbits/sec                 
[  8]   8.00-9.00   sec  58.5 MBytes   491 Mbits/sec                 
[ 10]   8.00-9.00   sec  54.6 MBytes   458 Mbits/sec                 
[ 12]   8.00-9.00   sec  57.5 MBytes   482 Mbits/sec                 
[SUM]   8.00-9.00   sec   226 MBytes  1.90 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[  6]   9.00-10.00  sec  53.0 MBytes   444 Mbits/sec                 
[  8]   9.00-10.00  sec  59.8 MBytes   501 Mbits/sec                 
[ 10]   9.00-10.00  sec  56.8 MBytes   476 Mbits/sec                 
[ 12]   9.00-10.00  sec  56.3 MBytes   472 Mbits/sec                 
[SUM]   9.00-10.00  sec   226 MBytes  1.89 Gbits/sec                 
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bandwidth       Retr
[  6]   0.00-10.00  sec   538 MBytes   451 Mbits/sec  26135             sender
[  6]   0.00-10.00  sec   535 MBytes   449 Mbits/sec                  receiver
[  8]   0.00-10.00  sec   574 MBytes   481 Mbits/sec  28681             sender
[  8]   0.00-10.00  sec   570 MBytes   478 Mbits/sec                  receiver
[ 10]   0.00-10.00  sec   570 MBytes   479 Mbits/sec  27126             sender
[ 10]   0.00-10.00  sec   567 MBytes   476 Mbits/sec                  receiver
[ 12]   0.00-10.00  sec   582 MBytes   488 Mbits/sec  28397             sender
[ 12]   0.00-10.00  sec   580 MBytes   486 Mbits/sec                  receiver
[SUM]   0.00-10.00  sec  2.21 GBytes  1.90 Gbits/sec  110339             sender
[SUM]   0.00-10.00  sec  2.20 GBytes  1.89 Gbits/sec                  receiver

[bogof]

Zen's speedtest.net server has pretty good connectivity to at least some part of the world (if not to some of their own customers... lol).

Code: [Select]

./speedtest -s 40788

   Speedtest by Ookla

     Server: Zen Internet - London (id = 40788)
        ISP: Amazon.com
    Latency:     1.80 ms   (0.46 ms jitter)
   Download:  7456.85 Mbps (data used: 6.6 GB )                               
     Upload:  4779.42 Mbps (data used: 2.2 GB )                               
Packet Loss:     0.0%
 Result URL: https://www.speedtest.net/result/c/c9b3a63f-51a6-44a7-9587-07c8bda04e29

[Alex Atkin UK]

Zen's speedtest.net server has pretty good connectivity to at least some part of the world (if not to some of their own customers... lol).

Code: [Select]

./speedtest -s 40788

   Speedtest by Ookla

     Server: Zen Internet - London (id = 40788)
        ISP: Amazon.com
    Latency:     1.80 ms   (0.46 ms jitter)
   Download:  7456.85 Mbps (data used: 6.6 GB )                               
     Upload:  4779.42 Mbps (data used: 2.2 GB )                               
Packet Loss:     0.0%
 Result URL: https://www.speedtest.net/result/c/c9b3a63f-51a6-44a7-9587-07c8bda04e29

Considering Amazon host about half the web, maybe more, we'd all be pretty stuffed if they didn't at least have insane transit links to them.