Affect on speeds of the Plusnet profile

[#1]

Maybe PN  should adopt something along the lines of aaisp Continuous Quality Monitoring (CQM) for static IP customers or [ pro accounts if revenue justification is needed.]

[#2]

Webif - we've got something similar with our traffic management platform which looks at all TCP traffic to work out the latency on the 3 way handshake and the quality of the data flow (based on packet loss/retransmits). Using this data we can aggregate by geography and network topology get views like some of the graphs on this page:
http://community.plus.net/exchange-information/

[#3]

Quote from: dave

Try out a download or look at the utilisation in the interface. Whenever we've tested this out we've always seen that the actual throughput coming down the wire is faster than the speedtest reports and in testing in the labs this was the behaviour we saw.

Quote from: ejs

and see how fast you can download (ideally a 5 minute or so sustained download, so people won't try to explain the difference away by network buffering and speedtester inaccuracies etc.).

^ Told you.
I'll try another probably futile attempt to drag this thread back to the original topic and away from the necessity of a profile at Plusnet, the wonders of Plusnet's traffic management, or ping graphing.
To summarise, the only explanations for the reduced throughput due to the Plusnet profile have been given as:
1. It doesn't exist, the speedtest result is wrong.
2. The plusnet profile is rounded down to the nearest 100K.
Neither of those really tally with the 380kB/s vs. 356kB/s difference in speed reported by wget I observed in the past. But perhaps the difference is too small to measure on fast FTTP or VDSL2 connections.

[#4]

Surely on a faster connection, a speed difference would be magnified?
Using wget on the test files on TBB (http://www.thinkbroadband.com/download.html), I am unable to replicated the speed test results (11.6-11.8MB/s) from their flash tool.
The max I see is 11.2MB/s using wget, however I am unable to sustain that rate throughout a 1GB download. Every time I hit 11.0-11.3MB/s, there is a drop back down to 5.0-6.0MB/s.

[#5]

Not if the difference is entirely due to the rounding down to the nearest 100K or 200K. Then for faster lines, the discrepency would be a smaller percentage of your line speed, which would be less noticable if your Plusnet profile ever ends up too high when you can see what speed you could get if it weren't for the plusnet profile.

[#6]

Chrysalis/chrcoluk had problems when his Plusnet profile was set too high - http://forums.thinkbroadband.com/plusnet/f/4317238-to-dave-kelly-etc-possible-traffic-management-iss... Though, I think he will argue it had nothing to do with this.
Why don't you ask dave to raise your profile and see what happens?

[#7]

And not wait forever for the automated profile update system not to work? I'd rather wait, the longer I wait, the longer the angry rant that I'll post on the 50 page thread of profile non-updates will be.

[#8]

May be joining you over there with that one matey...

[#9]

I think the IP Profile % of connection/sync speed depends on what product you're on.
Mine is 96.54% of my sync speed.

[#10]

Quite right:
ADSL: 88.2% of DS Sync
FTTC: 96.7% of DS Sync

[#11]

Still not quite right !
88.2% is only for 21CN ADSL.
Whereas 20CN ADSL profile rates can be found in this table - http://www.plus.net/support/broadband/speed_guide/broadband_terminology.shtml#ipProfile

[#12]

Quote from: Chris

Quite right: ADSL: 88.2% of DS Sync FTTC: 96.7% of DS Sync

Should that figure for FTTC not be 96.8% of DS sync ? As  96.7% gives a figure of  77.36000000000001, Which would give an  IP profile of 77,36 on a 80mbps sync ?
i used this online tool http://www.percentagecalculator.net/#
Which a max full 80mbps sync rate throughput should be a little higher than it is on plusnet, typically i get 9.0-9.2MB/s when the headline speeds are around 9.5MB/s  So 72/73.6 instead of 76mbps max throughput  ,So i'm seeing up-to 4mbps lower throughput than i would with BT retail or another BT wholesale based provider,Higher still on those providers who use PPPOA
So if it isn't because of the (set sightly lower IP profile) used by plusnet  what is causing this, traffic management? the DPI scanning that they do?, whatever the cause it's unique to plusnet
Recently DLM  lowered my sync and added interleave, by BT ip profile  refused to change even after several PPP drops, i had to power off the BT modem for it to change, For the 13 days my connection remained this way the plusnet IP profile remained at 77.4 , my BT ip profile was 71.3mbps  throughput was around 70mbps  only 1.??mbps difference
When my IP profile was set initially at 78mbps throughput was only slightly higher  iirc , never 76mbps for sure  those are my findings/observations
It would be interesting to see the results if the Plusnet profile was set to above 80mbps,

[#13]

Well, it's 96.79% I believe so rounding up would say yes 96.8%.
We use the rule of 96.7%, our Speed Profiles go up on 200Kb increments on FTTC.