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Standard User ripface
(member) Mon 19-Jun-17 19:47:44
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Broadband Performance .... sucks!


[link to this post]
 
Hi Y'all,

Looking for some advice from the better informed ... well ... hopefully!

I'm at the end of a loooong 5km+ line, and have finally settled on a Billion modem that gives me the option to tweak SNR to get the best from my poor bandwidth.

I now sync at ~1300kbps ... yup ... that's the best I can achieve. Stable line though and rarely get a disconnect.

Problem is that lately although I'm syncing at over 1mbps, browsing has been horrendously slow. Worse than dial-up with pictures taking forever to appear and even text based web pages slooooowly appearing line by line.

When I see these problems I'm monitoring bandwidth usage on the modem, and the weird thing is that it's only showing 30-50kbsp usage ... but this is not borne out by the web performance.

Any ideas peeps, I'm getting a bit hacked off with this ....

Cheers,
Ripface

Ripface
Aberdeenshire
UK
Standard User ian007jen
(experienced) Mon 19-Jun-17 22:36:28
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Re: Broadband Performance .... sucks!


[re: ripface] [link to this post]
 
Full modem stats please especially CRC, FEC and error seconds.

Ian
Standard User ukhardy07
(knowledge is power) Mon 19-Jun-17 22:46:59
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Re: Broadband Performance .... sucks!


[re: ripface] [link to this post]
 
Seconded we need stats.


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Administrator MrSaffron
(staff) Tue 20-Jun-17 00:02:08
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Re: Broadband Performance .... sucks!


[re: ukhardy07] [link to this post]
 
And a link to a speed test result from http://www.thinkbroadband.com/speedtest might help too

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User ripface
(member) Tue 20-Jun-17 17:55:15
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Re: Broadband Performance .... sucks!


[re: ian007jen] [link to this post]
 
Thanks ian007jen, stats from my modem ... not the prettiest but it's all there ....

xDSL
Mode ADSL_G.dmt
Traffic Type ATM
Status Up
Link Power State L0
Downstream Upstream
Line Coding (Trellis) On On
SNR Margin (dB) 0.7 7.0
Attenuation (dB) 63.5 31.5
Output Power (dBm) 15.9 12.1
Attainable Rate (Kbps) 1536 540
Rate (Kbps) 1376 384
K (number of bytes in DMT frame) 44 13
R (number of check bytes in RS code word) 16 16
S (RS code word size in DMT frame) 4.00 4.00
D (interleaver depth) 8 2
Delay (msec) 8.00 8.00
INP (DMT symbol) 0.33 0.03
Super Frames 93454759 93454759
Super Frame Errors 11137350 79052
RS Words 1588712858 128745807
RS Correctable Errors 1243156809 81726
RS Uncorrectable Errors 22395893 0
HEC Errors 16845168 112850
OCD Errors 848 0
LCD Errors 848 0
Total Cells 860770616 0
Data Cells 399479420 0
Bit Errors 1320678914 0
Total ES 1254176 0
Total SES 139712 0
Total UAS 128192 68

Ripface
Aberdeenshire
UK
Standard User MHC
(sensei) Tue 20-Jun-17 18:02:51
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Re: Broadband Performance .... sucks!


[re: ripface] [link to this post]
 
Initial comments:

Downstream SNR is at 0.7 dB and that itself is not good. When down at that level a lot of errors can occur which results in retransmissions and error correction which effectively slows the overall speed.

If you have control yo need to get that back to over 3dB - that should significantly reduce te errors and whilst the sync speed is lower the successful throughput could be higher.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Standard User Zarjaz
(eat-sleep-adslguide) Tue 20-Jun-17 18:24:00
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Re: Broadband Performance .... sucks!


[re: MHC] [link to this post]
 
Agreed, unless the low ant and heavy errors are REIN related maybe ? I looked but couldn't see an uptime in amongst those stats.

Administrator MrSaffron
(staff) Tue 20-Jun-17 18:26:49
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Re: Broadband Performance .... sucks!


[re: Zarjaz] [link to this post]
 
Could just be a storm or other event forced a low sync with upload particularly impacted, and since modems don't resync to improve speeds but rely on the human deciding an appropriate time to time an attempt to improve sync then until modem was 'reset' it would have continued.

Or put another way - always try a simple off, count to 10 and then on again test, if speeds have been slow for a day or two.

The author of the above post is a thinkbroadband staff member. It may not constitute an official statement on behalf of thinkbroadband.
Standard User MHC
(sensei) Tue 20-Jun-17 18:44:28
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Re: Broadband Performance .... sucks!


[re: Zarjaz] [link to this post]
 
ES - 1254176 which converts to 348 hours if every second was errored. So it has been up for over 15 days,


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

M H C


taurus excreta cerebrum vincit
Standard User RobertoS
(elder) Tue 20-Jun-17 18:44:59
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Re: Broadband Performance .... sucks!


[re: Zarjaz] [link to this post]
 
The AS line comes later in the same stats.

My broadband basic info/help site - www.robertos.me.uk. Domains, site and mail hosting - Tsohost.
Connection - AAISP Home::1 80/20. Sync 71288/12440Kbps @ 600m. BQMs - IPv4 & IPv6
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