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Standard User snowy44
(newbie) Fri 31-May-13 16:52:04
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line Statistics graphs


[link to this post]
 
Hi,

I have just unlocked the HG612 modem as I am having issues with slow throughput speeds in the evenings and was wondering if anyone on here could please take a look at the line stats from program HG612 Settings Editor to see if any issues are showing up there?


could someone let me know,

many thanks
Standard User R0NSKI
(fountain of knowledge) Fri 31-May-13 17:42:51
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Re: line Statistics graphs


[re: snowy44] [link to this post]
 
You may want to post a link to the stats/graphs, then people can take a look wink

If it's only in the evening it could be network congestion, perhaps set up a ping monitor, although you do ideally need a static IP.

Edited by R0NSKI (Fri 31-May-13 17:44:28)

Standard User snowy44
(newbie) Fri 31-May-13 17:50:17
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Re: line Statistics graphs


[re: R0NSKI] [link to this post]
 
Hi,

Thanks for your response,

I have attached some line graphs, and would be grateful if you or another member could take a look?

http://tinypic.com/view.php?pic=ao5dsw&s=5

http://tinypic.com/view.php?pic=2u4sv0h&s=5



Many thanks,

Edited by snowy44 (Fri 31-May-13 17:54:26)


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Standard User asbokid
(member) Fri 31-May-13 17:59:36
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Re: line Statistics graphs


[re: snowy44] [link to this post]
 
The actual data rates (ACTNDR) are excellent: 80MBps down 20Mbps up, so you've topped out!
The max attainable rate (ATTNDR) is 92Mbps/26Mbps which again is excellent.
Attenuation on the top downstream band is 39dB, so you must be within the first few hundred metres of the cabinet.
As for your throughput issue, it appears to be caused by a problem other than the HG612 modem.
Maybe run a pppoe client on the PC itself to eliminate the router (some version of BT Home Hub?) as the cause.
Hope you get it sorted soon because you've got a very good VDSL2 service there.

cheers, a
Standard User WWWombat
(fountain of knowledge) Fri 31-May-13 18:02:15
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Re: line Statistics graphs


[re: snowy44] [link to this post]
 
Beautiful looking graphs and numbers there.

You have a full 80/20 sync, with capacity for higher. There is no FEC or interleaving.

The 18 errors (OHFErr) in 1.3 million frames (OHF) isn't that high - I think that means the modem has been on for around 30 minutes, so 30-40 errors per hour is pretty low (my line currently runs at around 100 per hour, but has been fine at nearer 1000 per hour)

There is no reason for a slow down there.

I'd start next by running a monitor 24/7, to see what the wider network is doing (including your ISP). The TBB BQM (broadband quality meter, or ping meter) is a good tool to try, if you have a static IP.
Standard User Zarjaz
(knowledge is power) Fri 31-May-13 18:17:13
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Re: line Statistics graphs


[re: snowy44] [link to this post]
 
Who is the ISP ?

Standard User snowy44
(newbie) Fri 31-May-13 20:48:40
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Re: line Statistics graphs


[re: WWWombat] [link to this post]
 
Hi.
Thanks for the responses,

Attached is the latest line graph I have and also the stats from the modem, the connection has been up for around 3 hours now.

http://tinypic.com/view.php?pic=dnd1lv&s=5

http://tinypic.com/view.php?pic=2w527vm&s=5

http://tinypic.com/view.php?pic=2w1wkl4&s=5

I will look into getting a static IP address, also am I correct in assuming that if the SNR margin was lowered for the downstream then my speeds could go higher? Or is this still dependent on what the IP profile is set to?

Edited by snowy44 (Fri 31-May-13 21:47:17)

Standard User Bald_Eagle1
(experienced) Fri 31-May-13 23:25:18
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Re: line Statistics graphs


[re: snowy44] [link to this post]
 
Your connection is in sync at the full 80/20, with some spare SNRM margin, so as mentioned above you could be experiencing evening network congestion.

Your IP Profile should be around 96.79% of sync speed i.e. around 77.43 Mbps.

What is reported from the further diagnostics here:-

http://speedtest.btwholesale.com/





Are you connecting wirelessly or wired to the router/hub?



Who is your ISP?



What speeds do you see at various times of day from here:-

http://www.speedtest.net/



While your connection is achieving the capped 80/20 sync speeds, lowering the DS SNRM would have no effect whatsoever on throughput speeds.
Standard User WWWombat
(fountain of knowledge) Sat 01-Jun-13 00:10:33
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Re: line Statistics graphs


[re: snowy44] [link to this post]
 
In reply to a post by snowy44:
Attached is the latest line graph I have and also the stats from the modem, the connection has been up for around 3 hours now.

Yup - still no problem with the line. The error rate picked up a little in the last image, but still isn't a problem.

am I correct in assuming that if the SNR margin was lowered for the downstream then my speeds could go higher?

If the speed wasn't capped at 80, the modem would try to sync at a higher speed, and target 6dB. That target SNRM doesn't ever change in FTTC - DLM works in a different way here.

If you look closely, the text part of the images you have shown indicate an attainable speed of 92Mbps. This is usually a slight over-estimate when interleaving is turned off (and a large over-estimate when it is turned on), so you'd probably be able to get around 90Mbps.

Or is this still dependent on what the IP profile is set to?

The other way around - the IP Profile value (at BT) is set once the sync speed is known.
Standard User Chrysalis
(legend) Sun 02-Jun-13 01:30:22
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Re: line Statistics graphs


[re: snowy44] [link to this post]
 
so you feel good.

your attenuation is very slightly higher than mine, but your attainable downstream is about 23mbit higher than mine.

Your problems I dont think are related to the sync especially as its primary at peak times. Looks more likely to be congestion.

BT Infinity 2 Since Dec 2012
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