Jumping Ship

[Technical Ben]

Does that mean, one reading was saying "enough capacity", but as per usual, the BT systems was not providing/managing/moving it accordingly, leaving some lines (more so than others) stuck without provisions. 

So a move might help, as it could put you on a (virtual) line/ISP that the system had not mistakenly left congested. But it's hit and miss.

[Steve]

Probably a manual shift of of svlan and then the automated system catches you again!

[andrue]

BT have acknowledged problems with capacity on their SVLANs and are "investigating"... whether they'll do much about it is a separate issue. Mine was fixed for a few days then, as they continued to shuffle things around, was unfixed again and it's stayed that way.

But that should impact my throughput and it doesn't. As a new PN customer I can assure you that I've investigated this and there is no change in throughput during these periods of increased latency. Others have said the same. It's possible it would affect latency sensitive applications like games but I have no way of testing that.

[Bill]

But that should impact my throughput and it doesn't.

It's exchange-dependent (ask Zappa), so quite likely it doesn't affect you.

But it sure as hell affects me, I've had several BT speedtests below 5Mbps in the evening, and I think Zap has had worse problems than me.

I've had several (amicable!) email exchanges with support about it- take my word for it¹, it's BTw and they have SVLAN capacity issues.



¹ Or don't, it makes no difference.

[Steve]

Zappa's keeping quiet as his TBBQM is looking good at present but then again he's a day or two behind you.

[Bill]

I hope his BQM stays that way, I wouldn't wish mine on anybody


(Actually that's not quite true, I can think of one or two over in tbb )

[andrue]

It's exchange-dependent (ask Zappa), so quite likely it doesn't affect you.

But that PlusNet latency does affect me - that's why I wrote "Yeah but a lot of their graphs are like that including mine". However I don't see any throughput consequences:

TBBQM (latency increase just started, TBB speed test spike at right edge):


Speed test:


Full speed, flat graph (ignore the spike on the x6, that's an artifact of Kaspersky AV). So whatever is causing the TBBQM latency on my PN connection it doesn't show up anywhere else. So I don't think it's related to the BTw congestion. I think it's something weird that PN are doing but apparently it has no practical adverse effects.

[zappaDPJ]

I've got to agree with Bill, we both appear to have been hit by local congestion and everything seems to point to a SVLAN capacity issue. I'm also sure that the issue was further compounded by the capacity issue within IDNet's network a week or two ago. In my case, when these two problems coincided I had no measurable throughput on the downstream at peak times. BT speed tests when working recorded speeds of about 1Mbps during this time (on an 80/20 connection).

I've had three rather pointless engineer visits in the space of two weeks but my connection has been back to its usual self since I was disconnected for 30 minutes at 2am one morning. That said I'm now being plagued by DNS issues and email failures (both send and receive). I've been rather quiet recently because I've lost two major business clients. No Internet equals no income for me so I've had to get my head down in an attempt to drum up new business. It's not all doom and gloom though, I just sold one of my forums for over 15x what I paid for it 18 months ago. There's a lot of money in active automotive forums it seems.

[Bill]

So whatever is causing the TBBQM latency on my PN connection it doesn't show up anywhere else. So I don't think it's related to the BTw congestion. I think it's something weird that PN are doing but apparently it has no practical adverse effects.

As you will.

BQM:



Speedtest:

[Bill]

BT speed tests when working recorded speeds of about 1Mbps during this time (on an 80/20 connection).

Ouch, mine were never that bad... the worst was about 3.5Mbps iirc. Not that that's in any way satisfactory.