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Massive increase in ES and minor packet loss.

xreyuk
Grafter
Posts: 231
Registered: 23-05-2014

Massive increase in ES and minor packet loss.

Hi PN.
For the past four or five days I've been suffering packet loss, regardless of what gateway I've been connected to (although much worse on ptw-bng01). I've never previously had any packet loss problems, and have actually had my best performance over the past few months when connected to ptw-bng01.
I took a look at the line stats from my router monitoring and can see that in the past 5 or 6 days I've seen a massive increase in ES, as well as CRC and FECs. I've included graphs below to show the ES and some stats to show CRCs etc. I've also attached some ping monitors showing the minor packet loss (but it's noticeable).
Could someone from PN take a look?
ES Graphs - My usual ES is around 5-6 per hour, but it's going as high as 28 per hour.
Friday 12th ES Graph: http://cl.ly/Z01r
Saturday 13th ES Graph: http://cl.ly/Z01r
Sunday 14th ES Graph: http://cl.ly/YzjP
Monday 15th ES Graph: http://cl.ly/Z0CS
Tuesday 16th ES Graph: http://cl.ly/Z0BW
Line stats: http://pastebin.com/MuUUtmXR
TBB Ping graph Tuesday 16th:

My TBB graph is usually clean all day until I get home and start using it.


14 REPLIES
Plusnet Help Team
Plusnet Help Team
Posts: 4,782
Thanks: 364
Fixes: 136
Registered: 01-01-2012

Re: Massive increase in ES and minor packet loss.

Our testing isn't showing any major issue but then again we can only see errors that have occurred in the last 15 minutes so if the issue isn't happening at the moment we won't be able to see.
You have interleaving applied on your downstream albeit it at a low level so the errors should be getting corrected.
Do you know if there's anything that's changed in your area locally over the last few days?
If this post resolved your issue please click the 'This fixed my problem' button
 Matthew Wheeler
 Plusnet Help Team
xreyuk
Grafter
Posts: 231
Registered: 23-05-2014

Re: Massive increase in ES and minor packet loss.

Hi Matthew.
The only thing I'm aware of is one house which has put up a lot of exterior Christmas decorations, but they put those up the start of December, and this has only started within the last week.
Those line stats are 28 days old (that's how long it's been up for) so the interleaving level etc have all remained the same despite a large increase. Are there no line tests as such which you can run remotely?
Cheers
Plusnet Help Team
Plusnet Help Team
Posts: 4,782
Thanks: 364
Fixes: 136
Registered: 01-01-2012

Re: Massive increase in ES and minor packet loss.

Unfortunately the only tests that we can run remotely are the same ones that I've just ran.
I'll try to test it again later on this afternoon. Unfortunately the tests and details we can get back on Fibre are quite limited compared to the ones on ADSL.
If this post resolved your issue please click the 'This fixed my problem' button
 Matthew Wheeler
 Plusnet Help Team
xreyuk
Grafter
Posts: 231
Registered: 23-05-2014

Re: Massive increase in ES and minor packet loss.

No problem. As you can see from the graphs, it's starts early afternoon so maybe a test around 3PM or 4PM would be better?
Plusnet Help Team
Plusnet Help Team
Posts: 4,782
Thanks: 364
Fixes: 136
Registered: 01-01-2012

Re: Massive increase in ES and minor packet loss.

I'm in a meeting from 2:30 to 3:30 but I'll test it once i'm back.
Fingers crossed we can find something.
If this post resolved your issue please click the 'This fixed my problem' button
 Matthew Wheeler
 Plusnet Help Team
Plusnet Help Team
Plusnet Help Team
Posts: 4,782
Thanks: 364
Fixes: 136
Registered: 01-01-2012

Re: Massive increase in ES and minor packet loss.

I didn't quite get around to testing it when I wanted to but I've just tested it now and I can only see a couple of errors.
Do you have a link to your live TBB graph?
If this post resolved your issue please click the 'This fixed my problem' button
 Matthew Wheeler
 Plusnet Help Team
xreyuk
Grafter
Posts: 231
Registered: 23-05-2014

Re: Massive increase in ES and minor packet loss.

Sorry for the late reply, I got called out for work
Here's the live graph

I will post them tomorrow but the ES graphs look exactly the same to previous.
I wouldn't be bothering if it wasn't affecting us but it's affecting online gaming and pretty much any real time application.
Plusnet Help Team
Plusnet Help Team
Posts: 4,782
Thanks: 364
Fixes: 136
Registered: 01-01-2012

Re: Massive increase in ES and minor packet loss.

The ping graph doesn't look as bad compared to the day before..
Let us know once you've attached the stats.
If this post resolved your issue please click the 'This fixed my problem' button
 Matthew Wheeler
 Plusnet Help Team
xreyuk
Grafter
Posts: 231
Registered: 23-05-2014

Re: Massive increase in ES and minor packet loss.

ES graph for yesterday, large jump around 6am again, and then in the evening.
http://cl.ly/Z1l9
Plusnet Help Team
Plusnet Help Team
Posts: 4,782
Thanks: 364
Fixes: 136
Registered: 01-01-2012

Re: Massive increase in ES and minor packet loss.

Our testing is showing a few errored seconds at the moment but nothing major.
This is going to be hard to track down in all fairness. Is there anything around the modem that could be causing interference?
If this post resolved your issue please click the 'This fixed my problem' button
 Matthew Wheeler
 Plusnet Help Team
xreyuk
Grafter
Posts: 231
Registered: 23-05-2014

Re: Massive increase in ES and minor packet loss.

The only thing that's changed is the christmas tree in the same room, but I left the lights off for 24 hours and still had the same symptoms.
xreyuk
Grafter
Posts: 231
Registered: 23-05-2014

Re: Massive increase in ES and minor packet loss.

Saturday's graph: http://cl.ly/Z3WO
As you can see, it's much worse today. No coincidence that people are off work I think?
Community Veteran
Posts: 1,412
Thanks: 4
Registered: 29-01-2009

Re: Massive increase in ES and minor packet loss.

Although you class the ES's you are now seeing as a "massive increase", they are still pretty low compared to my old line without DLM intervention. The threshold before DLM intervenes is, we believe, 2880 ES's over a 24 hour period; My last FTTC line used to run at around 600-800 ES's per day (from around 6,000-8,000 CRC errors per day), with no sign of problems, including almost no visible packet loss. Here's a picture of a typical day...

Your line is obviously running differently, as the intervention applied by DLM ought to get rid of most errors (and indeed, seems to be doing so: RScorr is 50x bigger than RSUncorr). The ES count of the errors that get through the FEC process amounts to an average of 200 per day over the 30 day life of the original statistics, or perhaps 300 per day in the graphs. This isn't anywhere near enough to get DLM interested in adding further intervention to your line; in fact, getting less than 288 ES's per day would be making DLM think about removing the intervention. This level really ought to not be enough to make the packet loss visible in the BQM nor affect how you see gaming.
How long is it since DLM first intervened on your line? If this were recently turned on, then that could affect your gaming.
Plusnet Customer
Using FTTC since 2011. Currently on 80/20 Unlimited Fibre Extra.
xreyuk
Grafter
Posts: 231
Registered: 23-05-2014

Re: Massive increase in ES and minor packet loss.

Hi Wombat.
DLM has been on my line for months now, my last resync was over 30 days ago, and that was a manual resync which actually reduced interleaving.
It seems to be following a pattern, every day has been the same since the original graphs I've posted, although some packet loss has subsided.