[Bloat] Pacing --- was DSLReports Speed Test has latency measurement built-in

[Jonathan Morton]

> On 22 Apr, 2015, at 21:39, MUSCARIELLO Luca IMT/OLN <luca.muscariello at orange.com> wrote:
> 
> Now, I forgot how sch_fq pacing rate is initialized to be effective from the very first window.

IIRC, it’s basically a measurement of the RTT during the handshake, and you then pace to deliver the congestion window during that RTT (or, in practice, some large fraction of it).  Subsequent changes in cwnd and RTT alter the pacing rate accordingly.

 - Jonathan Morton