Re: Stupid on the most basic of levels
not so sure about that. Bandwidth is one thing, QOS another. Is all traffic equal, even in a data center ? I suggest to the outside user, probably, but to applications using backend services, definitely not. One wants a critical financial lookup and update to happen ASAP, while a webpage refresh can drag on. I do accept that bandwidth is cheap inside data center, but this project is aimed at hyperscale centers, so it is outside my experience and I suspect, almost everyone elses.
Given that carrier grade TCP/IP can utilise the hardware around 90% before performance degrades, the claims seem suspect. However they were done in a Real World situation with measurable changes. Were those changes in queue lengths significant to outside user ? That I did not see answered. Regardless, still worth doing to test alternative solutions. Given that individual network nodes make decisions based on local information, unable to optimise the whole network state, a central controller might have a better performance if it is managing the total network state which this seems to be addressing. Need dedicated control channels and very fast silicon though.