Tricky. Obviously there's no entitlement to have it working at full capacity, and if there are no other symptoms than the TBB result I am not sure what grounds there are for an escalated complaint.

It's not just the TBB result on here but also on other sites and real world physical download speed including trying to download a 1Gb test file from here which gives me a pathetic 2-2.5Mb/sec. All tests I've done give comparable results.

Edited by deleted (Sun 28-May-17 01:47:52)

The single thread problem is more noticable on 152mb packages and above as the single thread speeds typically max out at 70-120mbps. Therefore most test results on 30, 50, 70 and 100 will usually seem OK on the single thread speeds until you go onto the higher speeds where they will become more apparent.

Looks as though the CMTS is a big factor in the single thread speeds from the looks of it.

Edited by deleted (Sun 28-May-17 12:56:11)

It's pretty noticeable on my 100mbps connection I'm only getting 20-22mbps so not just an issue with higher speeds.

Interested to know how you draw the conclusion 'Therefore most test results on 30, 50, 70 and 100 will usually seem OK'

Generally where something is limiting speed you see a sharp rise to the limit and it holding, so lets look at some tests this afternoon

http://tbb.st/1495982561205636155
http://tbb.st/1495982046533850355
http://tbb.st/1495981979777380455
http://tbb.st/1495981625502732455
http://tbb.st/1495980809856201155
http://tbb.st/1495979869487769055

I should have worded it better - I meant that if the single thread results that look like the one you just linked (if the person was on 50mb:

https://www.thinkbroadband.com/speedtest/14959816255...

it seems to look OK as the TBBx1 and HTTPx6 graph do meet, however in reality if they moved up to a higher package:

for example 100mb:
https://www.thinkbroadband.com/speedtest/14959820465...

and 152mb:
https://www.thinkbroadband.com/speedtest/14959808098...

that the gap between the TBBx1 and HTTPx6 widens so it becomes more noticable.

So what I am trying to say is for those on lower packages that have 50mb TBBx1 and 50mb HTTPx6 it may 'mask' the problem until they upgrade their packages onto the higher speeds. It is difficult to judge if they have the single thread issue or not.

Edited by deleted (Sun 28-May-17 16:33:37)

In reply to a post by Busa:

It's pretty noticeable on my 100mbps connection I'm only getting 20-22mbps so not just an issue with higher speeds.

Yes it is noticable for you. What I meant was that in a hypothetical situation if you had single thread speeds close to the lower packages e.g. you have 100mb single thread on your 100mb package but if you were to upgrade to 300mb package your single thread remains 100mb and there would be a 200mb gap in single to multithread. So for those on the lower packages that think they have single thread speeds close to their package may only start to notice the problem when they upgrade to the higher packages. Which is why it is better to look at higher speed packages as the chance of them getting 300mb single thread is lower than them getting 50mb single thread on 50mb connection.

Edited by deleted (Sun 28-May-17 16:30:33)

In reply to a post by chris6273:

In reply to a post by thinksingle:

Does everyone on Virgin Media have poor single thread speed results that are not the same as their multi-thread speeds on TBB speed test?

I am particularly interested on those with 200mbps or higher packages as the single-threaded speeds usually lie between 70-120mbps.

I personally can never reach 200mbps single thread speeds at any time of the day on the TBB speed tester (off-peak or peak) and I do not understand why. However what I do find strange is if I download a test file from TBB with 1 connection, it downloads at full speed.

Here is my TBB test:
http://virgin.i.lithium.com/t5/image/serverpage/imag...

Here is my TBB 1GB test on 1 connection:
http://virgin.i.lithium.com/t5/image/serverpage/imag...

Here is a 1GB test file from NL(Netherlands) Leaseweb:
http://virgin.i.lithium.com/t5/image/serverpage/imag...

Here is a UBUNTU ISO on 1 connection:
http://virgin.i.lithium.com/t5/image/serverpage/imag...

Single thread speed test on testmy.net:
http://virgin.i.lithium.com/t5/image/serverpage/imag...

Single thread speed test on DSLReports.com/speedtest:
http://virgin.i.lithium.com/t5/image/serverpage/imag...

So why can I download a test file at full speed single threaded but not achieve the same speed on the TBBx1 test?

I have a similar same issue to the one you're having and from memory it's an issue with the CMTS equipment itself rather than the network. There were some people being switched over to newer Cisco CMTS's over on the Virgin Media forums a few months ago but not sure whether this is going to be a nationwide thing.

Pretty ridiculous though. I always get shoddy single thread speeds and have to use IDM to get full throught.

There is an issue with single thread downloads on RiverDelta/Motorola CMTS. it affected my connection all last year but I was switched to a Cisco CMTS in December and since then single thread speeds have been fine. The only exception is the TBB speed test which continues to show much lower single thread results which I can't replicate on any other speed test or file download.

cje85 what speed do you get from:

http://http-speedtest4.thinkbroadband.com/1GB.zip

Any idea why there is a difference in speed single-thread between

http://http-speedtest4.thinkbroadband.com/1GB.zip ->12MB/s

and

http://ipv4.download.thinkbroadband.com/1GB.zip -> 27MB/s