I've got a 38717 profile and get 37.5Mbps throughput, apart from on TBB.

Actual file downloads from rapidshare for example run at max speed 37.5Mbps, however TBB test file downloads run at 3-4Mbps.

Speedtest sites run at full speed:
http://speedtest.net/result/1327894941.png
http://www.mybroadbandspeed.co.uk/results/99493542.png

Apart from TBB:
http://www.thinkbroadband.com/speedtest/button/13072...

I'm with BT and currently using the hub so can't setup a BQM untill I replace it, but pingtest.net and manual pings don't show any packet loss. Maybe your packetloss will sort itself out.

You're more right than you know!

DLM cut in again, around 7:30pm - and you can probably see the little burst of packet loss in the graph from my earlier post. This time it left the interleaving on, but dropped the speed - the IP Profile went from 38717 to 34799, or around a 4Mbps drop.

The actual download result wasn't much lower though - 31.4Mbps, where I had results of around 33Mbps yesterday. Same for MBS.

Speedtest.net is giving me around 33Mbps, where it was 34Mbps yesterday.

Then DLM cut in *again* - just after midnight. It has taken interleaving away again (so reducing latency), but restoring the packet loss. The IP profile has stayed at 34799.

Yesterday's BQM link
Today's BQM link

I think my most positive face says "its nice that BT is giving me the opportunity to experience & tests different line conditions"

Thanks Croftie (you're not Dave Croft are you?). Those are useful things to know.

It is interesting watching the packet loss disappear and reappear as DLM changes things

Thanks Kevin. Is the Plusnet profile set to 37Mb or 20Mb?

I only ask, because my experience seems to be that the 37Mb profile holds speeds back around 2Mb, and that the 20Mb one is the best one.

The DLM decided to knock about 3Mbps off my profile at around 7:30 this morning for no obvious reason

That would be good, but I'd be reasonably happy just to get the line stats back!

(Mainly the SNRM, so I could tell whether forcing a quick re-sync would be profitable )

if we take aside whether or not higher latency is an issue etc.

Arent all these interleaving cut ins causing line drops? what happens when running software that needs a always on connection but DLM is changing settings twice a day?

In reply to a post by WWWombat:

Thanks Kevin. Is the Plusnet profile set to 37Mb or 20Mb?

I only ask, because my experience seems to be that the 37Mb profile holds speeds back around 2Mb, and that the 20Mb one is the best one.

It's set to 37Mb - surely if it were set to 20Mb I'd be limited to that? Incidentally, I think Plusnet's 37Mb is proper computer Mb, i.e. 37*1024*1024, which equates to 38797312 bps.

Some of them seem to be causing line drops - or at least I'm getting a spike in the red packet loss on the BQM. But not all.

Right now, the router thinks the connection has been up for 18 hours - putting the last connection time at 7pm yesterday. That certainly means the 7pm change of speed was seen, and that the Midnight change of interleaving was not seen.

As for the software running at higher layers... Any ongoing sessions would notice at the moment of the change, but anything critical would be in TCP, and would get retried. Anything that establishes a new connection would just do that, and see nothing. They probably do depend on having the same IP address afterwards, but I'm already on a static IP.

They are both strange profiles...

Back at the time of the trial, the triallists were set on a profile that was named 20Mb, but wasn't actually restricted at that rate.

It was a long way into the trial before the 37Mb profile was created, and some people were put onto that. It isn't clear whether it is an unrestricted profile, or is restricted.

Certainly someone has seen better performance, by 2Mbps, when on the 20Mb profile compared with the 37Mb profile.

My (very limited) experience suggests that the actual download reduction, from a BT-IP-Profile of 38717 to 34799 (roughly 4Mbps drop), is nearer 1-2Mbps (from 34.5Mbps to 33.5Mbps).