Do you think that "RTT to San Francisco" is a clear enough, predictable enough measure that we can use it in the context of non-technical users and obfuscating salescritters? --dave who vaguely watched RTT to Charlottetown PEI, Vancouver and Washington DC in a previous life On 04/12/17 02:59 PM, dpreed@reed.com wrote: > > I suggest we stop talking about throughput, which has been the > mistaken idea about networking for 30-40 years. > > Almost all networking ends up being about end-to-end response time in > a multiplexed system. > > Or put another way: "It's the Latency, Stupid". > > I get (and have come to expect) 27 msec. RTT's under significant load, > from Boston suburb to Sunnyvale, CA. > > I get 2 microsecond RTT's within my house (using 10 GigE). > > What will we expect tomorrow? > > This is related to Bufferbloat, because queueing delay is just not a > good thing in these contexts - contexts where Latency Matters. We > provision multiplexed networks based on "peak capacity" never being > reached. > > Consequently, 1 Gig to the home is "table stakes". And in DOCSIS 3.1 > deployments that is what is being delivered, cheap, today. > > And 10 Gig within the home is becoming "table stakes", especially for > applications that need quick response to human interaction. > > 1 NvME drive already delivers around 11 Gb/sec at its interface. > That's what is needed in the network to "impedance match". > > 802.11ax already gives around 10 Gb/sec. wireless (and will be on the > market soon). > > The folks who think that having 1 Gb/sec to the home would only be > important if you had to transfer at that rate 8 hours a day are just > not thinking clearly about what "responsiveness" means. > > For a different angle on this, think about what the desirable "channel > change time" is if a company like Netflix were covering all the > football (I mean US's soccer) games in the world. You'd like to fill > the "buffer" in 100 msec. so channel change to some new channel is > responsive. 100 msec. of 4K sports, which you are watching in "real > time" needs to be buffered, and you want no more than a second or two > of delay from camera to your screen. So buffering up 1 second of a > newly selected 4 K video stream in 100 msec. on demand is why you need > such speeds. Do the math. > > VR sports coverage - even moreso. > > > > On Monday, December 4, 2017 7:44am, "Mikael Abrahamsson" > said: > > > On Mon, 4 Dec 2017, Pedro Tumusok wrote: > > > > > Looking at chipsets coming/just arrived from the chipset vendors, > I think > > > we will see CPE with 10G SFP+ and 802.11ax Q3/Q4 this year. > > > Price is of course a bit steeper than the 15USD USB DSL modem :P, but > > > probably fits nicely for the SMB segment. > > > > > https://kb.netgear.com/31408/What-SFP-modules-are-compatible-with-my-Nighthawk-X10-R9000-router > > > > This has been available for a while now. Only use-case I see for it is > > Comcast 2 gigabit/s service, that's the only one I know of that > would fit > > this product (since it has no downlink 10GE ports). > > > > -- > > Mikael Abrahamsson email: swmike@swm.pp.se > > _______________________________________________ > > Cerowrt-devel mailing list > > Cerowrt-devel@lists.bufferbloat.net > > https://lists.bufferbloat.net/listinfo/cerowrt-devel > > > > > > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat -- David Collier-Brown, | Always do right. This will gratify System Programmer and Author | some people and astonish the rest davecb@spamcop.net | -- Mark Twain