nanog mailing list archives
Re: Netflix stuffing data on pipe
From: Owen DeLong <owen () delong com>
Date: Sun, 3 Jan 2016 23:42:12 -0800
As I understand it, the problem being discussed is an oscillation that is created when the reaction occurs faster than the feedback resulting in a series of dynamically increasing overcompensations. Owen
On Jan 3, 2016, at 21:26 , Justin Wilson <lists () mtin net> wrote: Netflix is streaming video. It will try to do the best data rate it can. If the connection can handle 4 megs a second it is going to try and do 4 megs a second. If the network can’t handle it then Netflix will back off and adapt to try and fit. Keep in mind, at least last I knew, a full HD stream was somewhere around 5 megs a sec. If the customer has a 4 meg plan it will try and fill up that 4 megs unless the algorithm backs off and steps it down. ISPs who run into this on lower packages need to implement QOS at the customer level to deal with streaming. This can be done several ways. This is one reason an endpoint the ISP controls is a huge asset, especially if it does QOS. Justin Wilson j2sw () mtin net --- http://www.mtin.net Owner/CEO xISP Solutions- Consulting – Data Centers - Bandwidth http://www.midwest-ix.com COO/ChairmanOn Dec 31, 2015, at 1:39 PM, Evelio Vila <evelio () thousandeyes com> wrote: It is actually buffer-based, as it picks the video rate as a function of the current buffer occupancy. See here http://yuba.stanford.edu/~nickm/papers/sigcomm2014-video.pdf -- evelio On Tue, Dec 29, 2015 at 6:56 PM, Matt Hoppes <mhoppes () indigowireless com> wrote:Has anyone else observed Netflix sessions attempting to come into customer CPE devices at well in excess of the customers throttled plan? I'm not talking error retries on the line. I'm talking like two to three times in excess of what the customers CPE device can handle. I'm observing massive buffer overruns in some of our switches that appear to be directly related to this. And I can't figure out what possible good purpose Netflix would have for attempting to do this. Curious if anyone else has seen it?
Current thread:
- Re: Netflix stuffing data on pipe Justin Wilson (Jan 03)
- Re: Netflix stuffing data on pipe Owen DeLong (Jan 03)
- Re: Netflix stuffing data on pipe Pete Mundy (Jan 04)
- Re: Netflix stuffing data on pipe Rob Seastrom (Jan 04)
- Re: Netflix stuffing data on pipe Owen DeLong (Jan 04)
- Re: Netflix stuffing data on pipe Pete Mundy (Jan 04)
- Re: Netflix stuffing data on pipe Owen DeLong (Jan 03)