uk Connection slows to a crawl when uploading to the Web

[Elliot B.]

When I am uploading a file using my connection (for example, a video to YouTube), my connection slows to a crawl.

Websites load slowly, game pings are 800+ etc.

Is this normal?

I am on Sky Broadband Unlimited., which I believe uses ADSL.

I am using a Wi-Fi connection although this happens if it's connected via. a LAN cable also.

[+BudMan MVC]

Well yeah if your using your upload pipe, then sure its going to slow down other things that want to use that pipe.

[Wakers]

Yes, it's normal. Unless you're on a specialised connection, your upload bandwidth will be a fraction of your download bandwidth - hence sending information from your web browser to an internet server will be severely affected if you're uploading something in the background.

[Elliot B.]

Is this an ADSL issue, or does it also happen with cable and fibre optic?

[sathenzar]

It won't matter who it's with. Like budman said, if you're using all the allocated bandwidth for that pipe then it will make everything else crawl.

[YouWhat]

For simplicity, a connection sends data in packets, each packet when received has to acknowledge receipt of the packet and the integrity of said packet, so downloading will also utilise a small fraction of the upload of your connection so send the Packet Received OK or Resend Packet Damaged (to put it as simply as possible), so if you connection is saturated with uploading a video for example, this slows down your download speed as it has to queue the packet requests to sending server which then slows down the download speed of the connection.

Hope this helps answer your question. I can't think how to put it any simpler than this.