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Inconsistent Download Speeds

FIXED
TeeGee
Grafter
Posts: 47
Thanks: 12
Registered: 24-02-2009

Inconsistent Download Speeds

My router gives me a sync speed of 10Mbs and generally downloads run at 8Mbs quite quick enough for most practical purposes.

Recently there have been spells where speed falls dramatically down to 1Mbs. Sometimes turning the router (choice of three from Netgear!) off and on again cures the problem, sometimes it does not. I am tolerant but this is tiresome.

Cables in the road were fixed a few months ago and BT kindly fitted me with a new wall box with an inclusive filter. Disconnecting the phone make no difference.

Any suggestions?

 

6 REPLIES
Superuser
Superuser
Posts: 11,099
Thanks: 2,471
Fixes: 22
Registered: 22-08-2007

Re: Inconsistent Download Speeds

Data through put tests have lots of factors influencing the results. You make reference to BT cabling which can impact sync speed and error rates.

Is the phone line quiet? Please post your full router stats.
TeeGee
Grafter
Posts: 47
Thanks: 12
Registered: 24-02-2009

Re: Inconsistent Download Speeds

BT cabling is all outside the house and there are no internal additional devices. current stats, back to 7mbps download a shade lower than "normal".

 

ADSL Link Downstream Upstream
Connection Speed 10359 kbps 1123 kbps
Line Attenuation 40.0 db 15.8 db
Noise Margin 3.9 db 5.6 db

 

Numbers from router above. Phone line silent.

Plusnet Help Team
Plusnet Help Team
Posts: 43
Thanks: 34
Fixes: 6
Registered: 26-03-2018

Re: Inconsistent Download Speeds

Fix

Hi @TeeGee,

 

Thanks for getting in touch. I'm sorry to hear that you're experiencing inconsistent download speeds.

I've tested your line and the test is picking a high number of errors. It appears that this is because the SNR margin is too low for the length of your line. I've adjusted this now. Please monitor your connection over the next couple of days and let us know if this hasn't resolved the issue.

 

For reference, today's test result is as follows:

 

xDSL Status Check
Circuit ID: XXXXXXXXX80 Service ID: XXXXXXXX09
Telephone NO.: NA Test Executed On: 10-04-2018 11:52:49
xDSL Status Test Summary
Sync Status: Circuit In Sync
General Information
NTE Status:   NTE Power Status: PowerOn Bypass Status:  
 
  Upstream DSL Link Information Downstream DSL Link Information
Loop Loss: 15.8 40.0
SNR Margin: 5.5 3.8
Errored Seconds: 1 10
HEC Errors: 1  
Cell Count: 250107 1877525
Speed: 1123 10359
 
Maximum Stable Rate (KBPS): 9088 Fault Threshold Rate (KBPS): 7270
Mean Time Between Retrains (Seconds): 86400 Mean Time Between Errors Upstream (Seconds): 3443
Indicative Line Quality: R Mean Time Between Errors Downstream (Seconds): 3
Custom Thresholds
MTBR_RED: MTBE_RED:
MTBR_GREEN: MTBE_GREEN:
If this post resolved your issue please click the 'This fixed my problem' button
 Emily D
 Plusnet Help Team
Superuser
Superuser
Posts: 11,099
Thanks: 2,471
Fixes: 22
Registered: 22-08-2007

Re: Inconsistent Download Speeds

@TeeGee,

At the reported synch speed, 7.3Mbps DATA download would be about right.

The low SNRM on the DS could give rise to errors (as reported by Emily) - however I did not see DS MTBE / MTBF figures.  The US MTBE suggests just one error per hour, which is not a real concern.

I suggest that you avoid rebooting the router and see what transpires.  Anther sight of your FULL router stats (including error counts) would be useful ... though if this is Netgear router that might be a tad difficult!

 

TeeGee
Grafter
Posts: 47
Thanks: 12
Registered: 24-02-2009

Re: Inconsistent Download Speeds

Best shot at current stats. Seems stable now. Fingers crossed!

 

ADSL Link Downstream Upstream
Connection Speed 9484 kbps 1127 kbps
Line Attenuation 40.0 db 15.8 db
Noise Margin 5.9 db

5.8 db

 

System Up Time 6 days 03:25:35
Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
WAN pppoe 128784 178765 0 911 14709 04:05:01
LAN1 10M/100M 885973 1249789 0 2004 868 6 days 03:25:35
LAN2 Link Down --
LAN3 Link Down --
LAN4 10M/100M 6 days 03:25:35
WLAN 145M 5720787 2744943 0 5491 557 6 days 03:25:10
 

 

Thanks all for assistance

 

Plusnet Help Team
Plusnet Help Team
Posts: 4,956
Thanks: 419
Fixes: 152
Registered: 01-01-2012

Re: Inconsistent Download Speeds

Glad to hear it's improved!

If this post resolved your issue please click the 'This fixed my problem' button
 Matthew Wheeler
 Plusnet Help Team