[Babel-users] us vs ns resolution in babel rtt branch

[Juliusz Chroboczek]

> I still kind of like getting down to ns resolution here. A single 64
> byte packet at 10gigE takes like 64ns.

Dave,

As Baptiste mentioned, babeld measures latencies with a granularity of
1µs, and a precision of a few hundred µs.  That means we have two to three
orders of magnitude to grow.  We've already changed the protocol once to
reduce the granularity, at your prompting, and there's no point doing that
again until the precision becomes comparable to the granularity.

Dave, if you'd like this to happen, you'll want to produce experimental
data that show that the timestamps' granularity is an actual limitation.

-- Juliusz