How far apart in time are those two images?

And the server can deliver to others at the right speeds
http://tbb.st/1495634300474153855
http://tbb.st/1495499395598914855
http://tbb.st/1494082321344887355
And checks show the server happy to serve at higher speeds.

So why not to Virgin Media users?

To add some other providers have had single thread complaints, and had us check things our end and not found anything untoward to date, and those providers have found issues in their own side, exactly what no-one has told us, so there maybe something going on somewhere with some networking hardware/firmware that is not helping things in addition to all the other Virgin Media issues.

If it was just little old us saying Virgin Media is having speed problems then the 'you are wrong' pressure I am under would be justified. Even Ofcom reported earlier this year on differences being marked at Virgin Media for their simulated video streaming (i.e. single thread) compared to FTTC services.

Edited by MrSaffron (Sat 27-May-17 11:35:33)

In reply to a post by MrSaffron:

Until we can be confident that the Virgin Media core network is not playing around in terms of limiting performance almost possible to do anything conclusive.

The volume of people posting poor speeds with a wide range of speed testers and doing so in response to services not working does point to their being ongoing issues.

If they ever deploy cable here perhaps we should co-op test. Brand new, very low utilisation cable node, known uncongested local network, and no congestion at least until core as the backhaul from the VM CMTS is brand new, 2 (8*10) Gb.

In reply to a post by MrSaffron:

How far apart in time are those two images?

And the server can deliver to others at the right speeds
http://tbb.st/1495634300474153855
http://tbb.st/1495499395598914855
http://tbb.st/1494082321344887355
And checks show the server happy to serve at higher speeds.

So why not to Virgin Media users?

To add some other providers have had single thread complaints, and had us check things our end and not found anything untoward to date, and those providers have found issues in their own side, exactly what no-one has told us, so there maybe something going on somewhere with some networking hardware/firmware that is not helping things in addition to all the other Virgin Media issues.

If it was just little old us saying Virgin Media is having speed problems then the 'you are wrong' pressure I am under would be justified. Even Ofcom reported earlier this year on differences being marked at Virgin Media for their simulated video streaming (i.e. single thread) compared to FTTC services.

Both tests were done near the time of my posting so at 9PM.

It's quite strange how http://http-speedtest4.thinkbroadband.com/1GB.zip ->12MB/s
inline with the TBB speed tester single thread results.

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

I wonder where the issue could be as it's not due to over-utilisation in my area or peak time speeds. It's very confusing as you have shown it is possible on Virgin Media to reach 200mbps single threaded on the TBB speed tester: https://www.thinkbroadband.com/speedtest/14957272858...

Only difference I can spot is the CMTS deployed (Motorola,Arris and Cisco) is different and something to do with CMTS QOS? I am on the Arris CMTS. I'm also using the SH3 but I do not have another modem to test with so I cannot test if that is the underlying problem.

Any ideas?

Edited by deleted (Sat 27-May-17 12:06:11)

Both tests were done near the time of my posting so at 9PM.

If both tests at 9pm why does our speed test badge show 6:10pm (BST) on 24th?

Have you done a traceroute to both servers?

In reply to a post by MrSaffron:

If both tests at 9pm why does our speed test badge show 6:10pm (BST) on 24th?

A very typical disingenuous TBB response, he was talking about the two file downloads, one from http-speedtest4.thinkbroadband.com and one from ipv4.download.thinkbroadband.com which show a marked difference even though coming from a similar location.

In reply to a post by MrSaffron:

Both tests were done near the time of my posting so at 9PM.

If both tests at 9pm why does our speed test badge show 6:10pm (BST) on 24th?

Have you done a traceroute to both servers?

I meant the two http file downloads from the two addresses. I was using my own TBB speed test as a reference.

Here is a new one done @ 4PM:
http://imgur.com/a/LUhjl

Here are the traceroutes:

Tracing route to http-speedtest4.thinkbroadband.com [80.249.103.8]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms RT-AC68U [192.168.1.254]
2 * * * Request timed out.
3 17 ms 11 ms 19 ms bmly-core-2a-xe-821-0.network.virginmedia.net [213.105.194.25]
4 14 ms 17 ms 16 ms bmly-core-2b-ae1-0.network.virginmedia.net [213.105.159.234]
5 * * * Request timed out.
6 15 ms 22 ms 14 ms eislou2-ic-2-ae0-0.network.virginmedia.net [62.254.84.62]
7 17 ms 18 ms 14 ms linx-gw2.thdo.ncuk.net [195.66.236.240]
8 15 ms 19 ms 16 ms te2-1-9.star10g.bdr-rt1.thn.ncuk.net [80.249.97.18]
9 15 ms 14 ms 13 ms speedtest4.thinkbroadband.com [80.249.103.8]

Trace complete.


Tracing route to ipv4.download1.thinkbroadband.com [80.249.99.148]
over a maximum of 30 hops:

1 <1 ms <1 ms <1 ms RT-AC68U [192.168.1.254]
2 * * * Request timed out.
3 12 ms 13 ms 13 ms bmly-core-2a-xe-821-0.network.virginmedia.net [213.105.194.25]
4 12 ms 12 ms 14 ms bmly-core-2b-ae1-0.network.virginmedia.net [213.105.159.234]
5 * * * Request timed out.
6 14 ms 22 ms 13 ms eislou2-ic-2-ae0-0.network.virginmedia.net [62.254.84.62]
7 12 ms 14 ms 17 ms linx-gw2.thdo.ncuk.net [195.66.236.240]
8 16 ms 15 ms 15 ms te2-1-9.star10g.bdr-rt1.thn.ncuk.net [80.249.97.18]
9 13 ms 17 ms 18 ms download.thinkbroadband.com [80.249.99.148]

Trace complete.

Edited by deleted (Sat 27-May-17 16:03:23)

Sorry for being disingenuous, clearly my input and questions are not welcome on the matter.

Thanks

Did not think they should be routed differently, and I can consistently download faster from http-speedtest4.thinkbroadband.com server which is what I would expect i.e. nailing 840 Mbps and better on a machine with a 1 Gbps link

http://tbb.st/1495763140797050755 is a recent test and the shape is interesting, suggesting something is slow to allow the speeds to ramp up

http://tbb.st/1495898141777812255 and then others don't see that behaviour but look just like any other connection, just with slower speeds than you'd expect
http://tbb.st/1495897985394527955
http://tbb.st/1495897066770640255

http://tbb.st/1495896880719221955 then somewhat similar to what you've posted before

Looking at other providers (and remember exactly same server)
http://tbb.st/1495898077896583655
http://tbb.st/1495727800659645755 (KCom is important as away from London and similar 200 to 300 Mbps speeds to cable)
http://tbb.st/1494439032786691055
http://tbb.st/1494110297142206855

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.

Edited by chris6273 (Sat 27-May-17 19:02:57)

I'm only getting approx. 20mbps from my 100mbps connection on single thread download.
After a1/2 hour in chat followed by a frustrating 2 hours on the telephone to Virgin yesterday it was obvious their staff are clueless and just kept on quoting multithreaded download speed as being fine.
The advisor I spoke to in the Swansea office tried to imply I had 9 other devices logged into my SH3, I only had one pc connected via Ethernet, I then had to prove it to him by swapping over to modem only mode and allowing him to remote connect to me, great show Virgin, the client is always a lying b*st*rd in your view! I didn't even get an apology.
I did eventually get them to say they did not support single threaded downloads, not the answer I was looking for and a total cop out imho.
Any ideas how to escalate this as I'm not at all happy to be paying for a service that is not working to it's full capacity?