Intermittent speed problems over past few weeks - huge ping and jitter

[#1]

Spoke too soon, finally grabbed one:


Have already tried another microfilter unfortunately, as well as a different router, and no extension wiring - think I'll have to call them, that questionnaire is pretty frustrating.
Also the line stats from the other router are here:

[#2]

Quote

Have already tried another microfilter unfortunately, as well as a different router, and no extension wiring - think I'll have to call them, that questionnaire is pretty frustrating.

I'm going to be honest and say even if you called you'd be asked to do exactly the same tests. The reasoning behind it is that if the fault gets to an engineer visit and the fault is caused by the internal wiring/sockets then an engineers charge would likely be applied.

Quote

I can't check to see if the line is clear by phone because we don't have a phone

Do you know anyone you could borrow a handset off for a short while to test?

[#3]

@spleenharvester
Did you get this resolved?
I'm still seeing large spikes in connectivity.
ping google.com
Pinging google.com [212.56.71.99] with 32 bytes of data:
Reply from 212.56.71.99: bytes=32 time=842ms TTL=61
Reply from 212.56.71.99: bytes=32 time=1219ms TTL=61
Reply from 212.56.71.99: bytes=32 time=1181ms TTL=61
Reply from 212.56.71.99: bytes=32 time=1207ms TTL=61
Ping statistics for 212.56.71.99:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 842ms, Maximum = 1219ms, Average = 1112ms

[#4]

Nope - and probably won't as I'm leaving my flat soon, unfortunately. I'm still seeing similar results to yours though.

[#5]

Quote from: spleenharvester

Spoke too soon, finally grabbed one: Have already tried another microfilter unfortunately, as well as a different router, and no extension wiring - think I'll have to call them, that questionnaire is pretty frustrating. Also the line stats from the other router are here:

Just occurred to me, is my noise margin not way too low here?

[#6]

I don't think it's the SNR causing any problems here. From looking at the time of that trace, you used a lot of upload data in that period. There are times throughout the day were you are completely maxing out the upload on your connection, this is likely causing the issue with the high pings and slow response times.
If it happens again try stopping anything uploading and test again.

[#7]

Interesting, I will speak to my flatmates about this. Thanks.

[#8]

Anyone own up?  How many of you share the router?
As an aside are you using Win10 quite a few members that use it seem to have these mysterious uploads.

[#9]

Are any of the flatmates using P2P?

[#10]

None of us using Win10, and P2P was my thought at first too. But the past few times it's happened I have been the only one in the flat (confirmed via the router interface connection list), and there is absolutely nothing on my computer that could be bunging up the upload speed.
Someone does use skype a lot (when he's in), so given our connection is 1mbit up, that probably doesn't help. There are two others aside from me living here.

[#11]

Did any of the others in this thread have any luck? Regularly seeing pings of 1500ms+ at the moment, 4:30 in the morning here so everyone else is very definitely asleep. Unusable a lot of the time. Unfortunately I don't move flats for a few months yet so I have to put up with this for a while longer.

[#12]

I suggest you install NetWorX on your PC and enable the deskband toolbar which will show a continuous graph of your traffic. If anything starts uploading in the background that will be immediately apparent.

[#13]

Quote from: spleenharvester

Did any of the others in this thread have any luck?

I
'm pretty sure in my case this relates to upload.  I can reproduce the fault at will by maxing out the upload, not difficult on my 20CN Max with only a 448K upload sync.  In tests I can fix that by prioritising small packets, so that pings and dns and tcp acks jump the queue and aren't held up by the large upload packets. 
However there are episodes where the same latency is triggered by uploads of only 200K (bits per second) or once at only 95K.  These have to be problems at the service provider end - Plusnet's gateways again?  Or exchange or backhaul congestion.  In either case QoS on the premises doesn't help of course.