Jim’s 8-minute video demonstrates latency in his home connection with and without a competing file upload.

Jim’s 8-minute video demonstrates latency in his home connection with and without a competing file upload. As he says, it is a fantastic, tangible way to see this problem and to realize that it’s already affecting you on a daily basis. The coolest part of the video is when he intentionally throttles his broadband router to 70% bandwidth and he shows a HUGE improvement in perceived performance.

Originally shared by Jim Gettys

I finally published the #bufferbloat demonstration videos I’ve been working on. I expect it will help make the problem more concrete to those of you who have heard of bufferbloat, and wondered what it does. You can find them in my blog.

http://gettys.wordpress.com

7 replies on “Jim’s 8-minute video demonstrates latency in his home connection with and without a competing file upload.”

  1. To be precise, the first demo is of a home connection with essentially the same characteristics as to when I first ran into bufferbloat and is pretty typical of what’s out there. The second demo uses my current home connection, which, since it is 50Mbps, means that the downstream bottleneck has been moved firmly into the home router, so that I can demonstrate the problems there (which otherwise might be moving back and forth between the broadband and home router on a second by second basis).

  2. There’s a script out there called wondershaper which I used to use for this on a home LAN. Effects like this can be more noticeable in high latency corners of the internet like NZ!

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