Re: [Bloat] [Cerowrt-devel] DC behaviors today

2017-12-17 Thread Mikael Abrahamsson
On Sun, 17 Dec 2017, Matthias Tafelmeier wrote: What I actually wanted to posit in relation to that is that one could get sooner a c-cabable backbone sibling by marrying two ideas: the airborne concept ongoing as outlined plus what NASA is planning to bring about for the space backbone, e.g [1

Re: [Bloat] [Cerowrt-devel] DC behaviors today

2017-12-17 Thread Benjamin Cronce
This is an interesting topic to me. Over the past 5+ years, I've been reading about GPON fiber aggregators(GPON chassis for lack of a proper term) with 400Gb-1Tb/s of uplink, 1-2Tb/s line-cards, and enough GPON ports for several thousand customers. When my current ISP started rolling out fiber(all

Re: [Bloat] *** GMX Spamverdacht *** RE: DETNET

2017-12-17 Thread Ken Birman
I see this as a situation that really argues for systematic experiments, maybe a paper you could aim towards SIGCOMM IMC. Beyond a certain point, you simply need to pull out the stops and try to understand what the main obstacles to determinism turn out to be in practice, for realistic examples

Re: [Bloat] *** GMX Spamverdacht *** RE: DETNET

2017-12-17 Thread Matthias Tafelmeier
> Well, the trick of running RDMA side by side with TCP inside a datacenter > using 2 Diffsrv classes would fit the broad theme of deterministic traffic > classes, provided that you use RDMA in just the right way. You get the > highest level of determinism for the reliable one-sided write case

Re: [Bloat] [Cerowrt-devel] DC behaviors today

2017-12-17 Thread Matthias Tafelmeier
> I tend not to care as much about how long it takes for things that do > not need R/T deadlines as humans and as steering wheels do. > > Propigation delay, while ultimately bound by the speed of light, is also > affected by the wires wrapping indirectly around the earth - much slower > than would