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High latency when uploading - fibre

spudy12
Grafter
Posts: 63
Thanks: 1
Registered: 24-07-2013

High latency when uploading - fibre

Hi
Recently I have started noticing that whenever our internet connection is being used to upload (video, twitch, large files) that the latency spikes massively.
There is no drop in download speed but the ping increases by around 150
Example
BEFORE:
<a href="http://www.speedtest.net/my-result/3614282290"><img src="http://www.speedtest.net/result/3614282290.png" /></a>
WHEN UPLOADING:
<a href="http://www.speedtest.net/my-result/3614276345"><img src="http://www.speedtest.net/result/3614276345.png" /></a>
Any reason for this?
On FTTC by the way
6 REPLIES
xreyuk
Grafter
Posts: 231
Registered: 23-05-2014

Re: High latency when uploading - fibre

Yes, you're uploading. That's why you have a high latency.
spudy12
Grafter
Posts: 63
Thanks: 1
Registered: 24-07-2013

Re: High latency when uploading - fibre

but this didn't use to be the case? only started happening recently
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: 26-11-2011

Re: High latency when uploading - fibre

It depends how much of your upstream you're utilising. If you're pretty much maxing out your upload, it'll cause high latency. If you're using your upload on P2P software, there is usually a way that you can cap how much of your upstream is being used.
Chris Pettitt
Cloud Environments Engineer
spudy12
Grafter
Posts: 63
Thanks: 1
Registered: 24-07-2013

Re: High latency when uploading - fibre

Oh right I see. Is this just a case of not noticing it before? I upload to twitch and youtube mostly and these to tend to max out my upload.
Whats the technical reason behind higher pings? (just interested)
Plusnet Staff
Plusnet Staff
Posts: 6,346
Thanks: 31
Fixes: 5
Registered: 26-11-2011

Re: High latency when uploading - fibre

I'm trying to find the best way to explain how this works...
I found this explanation quite a good one http://superuser.com/a/701238
Chris Pettitt
Cloud Environments Engineer
spudy12
Grafter
Posts: 63
Thanks: 1
Registered: 24-07-2013

Re: High latency when uploading - fibre

ah that does make sense. Guess I have just never noticed it before!
Thanks for the link Smiley