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From: Jonathan Morton <chromatix99@gmail.com>
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Subject: Re: [Cake] Long-RTT broken again
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> On 6 Nov, 2015, at 16:15, Toke H=C3=B8iland-J=C3=B8rgensen =
<toke@toke.dk> wrote:
>=20
> Added a run with Reno to the same directory. Smoother, but worse =
overall
> throughput.

Yes, looks like it=E2=80=99s ramping up the slow way, and hasn=E2=80=99t =
reached the BDP by the time the test run ended.

However, it also looks like it=E2=80=99s properly ack-clocked, unlike =
CUBIC, so while it=E2=80=99s still bursty, it isn=E2=80=99t overflowing =
the buffer except during slow-start.

The fact that slow-start terminates (due to loss) after only a few RTTs =
is suspicious.  What parameters are you giving to netem?  I note that =
the default packet limit in netem is 1000, which is 1.5MB...

 - Jonathan Morton