nanog mailing list archives
Re: Bufferbloat related censorship at Virgin Media
From: Jack Bates <jbates () paradoxnetworks net>
Date: Sun, 01 Mar 2015 18:39:29 -0600
On 3/1/2015 6:14 PM, Dave Taht wrote:
From OP: "However I've recently noticed periods of 500-800ms latency to the CMTS gateway when only using 15-20 of the 60Mbps total (and little to none upstream utilisation)."It is 100% possible to fix excessive downstream buffering from some misconfigured device with a shaper on the download *on the CPE or home router*.
I agree with you that it is better to run a shaper that insures your shaper hits saturation and handles queue policies before the upstream does. That is great if it is your pipe (and only its queue) that is saturating. I don't think this problem qualifies.
I find it difficult to believe that he's hitting a buffer bloat issue on a single (not shared with others) queue using 1/3rd of the total bandwidth available to him at those speeds and with that latency value. His problem is more likely lower down (unable to obtain max speed resulting in saturation) or a shared queue where others are saturating it and him applying a shaper will not keep others from doing so.
Jack
Current thread:
- Bufferbloat related censorship at Virgin Media Dave Taht (Mar 01)
- Re: Bufferbloat related censorship at Virgin Media Mel Beckman (Mar 01)
- Re: Bufferbloat related censorship at Virgin Media Dave Taht (Mar 01)
- Re: Bufferbloat related censorship at Virgin Media Mel Beckman (Mar 01)
- Re: Bufferbloat related censorship at Virgin Media Dave Taht (Mar 01)
- Re: Bufferbloat related censorship at Virgin Media Jack Bates (Mar 01)
- Re: Bufferbloat related censorship at Virgin Media Dave Taht (Mar 01)
- Re: Bufferbloat related censorship at Virgin Media Jack Bates (Mar 01)
- Re: Bufferbloat related censorship at Virgin Media Dave Taht (Mar 01)
- Re: Bufferbloat related censorship at Virgin Media Dave Taht (Mar 01)
- Re: Bufferbloat related censorship at Virgin Media Mel Beckman (Mar 01)