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Latency Spikes
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Latency Spikes
08-08-2017 8:18 PM
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I hope someone can help with this. For a while now we've been getting spikes of latency. Games get high latency and streaming video constantly buffers. I run a speed test whenever this happens but they always come back with 52 down and 12 up, which is a bit low but definitely fast enough for streaming etc.
We've tried most things at this point - wired/wireless, different router, different wires/filters nothing seems to make a difference. That said, it does seem to happen consistently between 7pm-10pm or so and is worse on the weekends.
Even more concerning, today our upstream is now only 9, down from the 12 we were getting before. The BT wholesale test errors when I try it so I can't test further.
We've tried most things at this point - wired/wireless, different router, different wires/filters nothing seems to make a difference. That said, it does seem to happen consistently between 7pm-10pm or so and is worse on the weekends.
Even more concerning, today our upstream is now only 9, down from the 12 we were getting before. The BT wholesale test errors when I try it so I can't test further.
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Re: Latency Spikes
09-08-2017 11:56 AM
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Testing your line isn't finding any issues:
Test Outcome | Pass | ||||
Test Outcome Code | GTC_FTTC_SERVICE_0003 | ||||
Description | No problem found, OAM test is not currently supported on this line. | ||||
Main Fault Location | OK | ||||
Sync Status | In Sync | ||||
Downstream Speed | 59.3 Mbps | ||||
Upstream Speed | 11.0 Mbps | ||||
Appointment Required | N | ||||
Fault Report Advised | N | ||||
NTE Power Status | PowerOn | ||||
Voice Line Test Result | Pass | ||||
Bridge Tap | Not Detected | ||||
Radio Frequency Ingress | Not Detected | ||||
Repetitive Electrical Impulse Noise | Not Detected | ||||
Cross Talk | Not Detected | ||||
Estimated Line Length In Metres | 606.5 | ||||
Upstream Rate Assessment | Reasonable | ||||
Downstream Rate Assessment | Good | ||||
Interference Pattern | Not Detected | ||||
Service Impact | No Impact Observed | ||||
Home Wiring Problem | Not Detected | ||||
Downstream Policing Discard Rate | 0.0 | ||||
Customer Traffic Level | Upstream and Downstream Traffic Detected | ||||
Technology | VDSL | ||||
Current 15Min Bin Retrains | 0 | ||||
Last 15Min Bin Retrains | 0 | ||||
Profile Name | 0.128M-80M Downstream, Retransmission Low - 0.128M-20M Upstream, Error Protection Off | ||||
Time Stamp | 2017-07-27T12:00:00 |
The connection speeds seem fine and your line is stable:
Do the spikes of latency happen at similar times each day or are they random?
The TBB graph you've added doesn't show any issues, the minimum latency hasn't increased and no packet loss is showing.
Former Plusnet Staff member. Posts after 31st Jan 2020 are not on behalf of Plusnet.
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Re: Latency Spikes
09-08-2017 12:36 PM
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I can't say for certain that they only happen between 7.30-9.30pm but that's by far the worst times for it. Probably around 8pm is the worst. The spikes themselves are random during that stretch.
For a while I thought it might be the gateway we were connected to. I did feel like switching improved things a bit but since it didn't fix it maybe that's me imagining things.
I found a graph that does show a spike that includes packet loss (I reset the router after that so ignore the red bar).
For a while I thought it might be the gateway we were connected to. I did feel like switching improved things a bit but since it didn't fix it maybe that's me imagining things.
I found a graph that does show a spike that includes packet loss (I reset the router after that so ignore the red bar).
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