If one upload slows down your internet you probably need a router that has a better packet scheduler. I recommend you look for one that uses FQ-CoDel
…yeah, because THATS what this post is about!
Why not have a fun joke and some education?
I’ll play. Without assuming where anyone is from, I’ll add that the vast majority of US residential Internet connections, especially those in rural areas, are not only slower than they are in much of Europe (for example) but are commonly asymmetrical, too. Meaning even if someone has a gigabit connection, often it’s only 1Gbps in one direction for Americans while the maximum upstream throughput may be closer to 50Mbps. Even a top-of-the-line, 5 figure Cisco or Juniper router can’t do much to improve that situation for the end user when someone starts uploading large video files.
That said, fortunately or unfortunately (as our President says), incest isn’t exclusive to Alabama,
I believe every internet connection in the world is asymmetric. Most people download way more than they upload.
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TCP ACK packages are tiny compared to the payload. I’m not sure this is really your issue.
Edit: To prove the point, this is me downloading a large file. The download to upload ratio is about 40:1.
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Does uploading slow down downloading? I thought the two processes were totally decoupled. How does this work?
Yes, it can slow down downloading.
(The explanation below is simplified quite a bit)
When you download the server that is sending you the file doesn’t just dump all the data onto the network in one go. They don’t know how fast you can receive and it’s not like the routers along the way will buffer large amounts of data. It needs to figure out how fast it can send.
So how does it do this? The sender sends a few packets of data and then waits for the receiver to acknowledge reception before it sends more data. Now the acknowledgment message isn’t that big so when downloading the amount of data sent back (uploaded) is just a tiny fraction of the amount downloaded, so that usually doesn’t matter.
The problem occurs when your local network is much faster than your internet upload and your router isn’t smart about which packets to send first. A good router will not allocate all the spots in the outgoing queue to the connection doing the large upload and instead will make sure the connection with smaller amounts of outgoing data will get a fair turn.
If your router isn’t smart like that the ‘data received, please send more’ packets may be delayed because of all the other outgoing packets and thus slow down the download.
A few moments later the internet is slow again, the son and father are downloding her porn
It will be slow again when son downloads his sister’s porn. Home sweet Alabaaaama!
No, nonono. There is a difference between upstream and downstream. The upload would not make general use noticeably slower.
