Line speed has changed.
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- Re: Line speed has changed.
Line speed has changed.
18-03-2010 7:52 AM
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Since moving to 21CN (8mb), my sync rate went from a stable 8128 (interleaving off) to 7616 (interleaving on) with an increase in upload causing interleaving to be applied automatically. My download speeds were now lower at 765kps but with the higher upload speed it seemed a reasonable compromise.
As of yesterday morning, my download speeds have dropped again by over 40kps to a max of 717 on any site I use. My sync rate remains the same as does my profile at 6500, the only difference I've noticed, and it may not be relevant, but if I run a speed test, the figure, which has been steady at around 6250 since the beginning of Feb, now shows at 5900-6000. I know 40kbps may not seem that important to some, but 40kps is 40kbps when you have several machines accessing the same connection.
Can anyone explain what might have caused this drop and if there's anything I can do about it?
Re: Line speed has changed.
18-03-2010 12:48 PM
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Re: Line speed has changed.
18-03-2010 4:15 PM
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Sorry for the delay in getting back to you - I'm just taking a look now and will let you know what I find. 6041kb/s looks about right for a 6500 profile though.
Re: Line speed has changed.
18-03-2010 4:30 PM
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I'm not sure what to suggest to be honest, unless you've recently changed phones or plugged something new into the line?
Re: Line speed has changed.
19-03-2010 8:01 AM
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Nothing has been changed at this end. I have the router plugged directly into the BT socket. No additional or new phones have been added. As I said, it's not that 6041kb/s is unreasonable per se, but it's been consistently at 6250 for the last 2 months, and a drop of over 40kps in actual download speed has to be caused by something.
After the move completed, I'd been intending to request my upload speed put back to 448 and have interleaving turned off again, as on the whole, having a higher download speed is far more useful. But, I've been uploading to my websites quite a bit and have enjoyed having the higher upload speed to do so, and the download speed I was left with after the move of 765 wasn't that much lower that the 795 I'd had previously. I'd rather not lose the upload knowing that this exact configuration gave me those figures rather than this being me just thinking they should. So it makes me loathe to change it as a means of solving the problem.
I did try replacing the filter this morning, just in case, which actually resulted in a higher 1056kb/s upstream figure, but it seems I definitely have this lower download figure now as my norm. It makes no sense that there's no explanation for it. It's such a stable and consistent change. However, if you're sure there's nothing else to be done, then I can't see any other solution except to lower the upload to 448, turn interleaving off which should reduce the extra noise and let me sync back at 8128. Obviously I've not had that config on 21CN before, but I assume that as I synced at 8128 on 20CN there's no reason that I shouldn't again?
Simon
Re: Line speed has changed.
21-03-2010 1:50 PM
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With interleaving off you might find the higher upstream sync speeds cause some instability in your connection; if that proves to be a problem asking for upload to be capped at 448kbps might help.
Re: Line speed has changed.
22-03-2010 7:37 AM
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Strangely, Matt stated that PN records show interleaving wasn't applied until 15th March - my router clearly showed interleaving on from the moment the move was completed in Feb. I'm just interested if someone at PN can confirm that as it doesn't make sense.
Anyway, if I ask you nicely, could someone please cap my upload and turn interleaving off again or do I have to raise a ticket?
Thanks.
Re: Line speed has changed.
22-03-2010 10:04 AM
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Re: Line speed has changed.
22-03-2010 10:11 AM
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As I said, if I ask nicely, could someone at PN please cap my upload and turn interleaving off again or do I have to raise a ticket?
Re: Line speed has changed.
22-03-2010 3:19 PM
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I have just raised a modify order for you to remove interleaving and cap the upload speed at 448kbps. The order should complete before 1pm tomorrow so please reboot your router after that point and see how things go.
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