Overview
Syllabus
Intro
Lots of Existing Congestion Control Prot . Congestion control goals
E2E Feedback Loops are too slow for • High feedback delay: network round-trip-time (E2E RTT) Acting on stale information can hurt performance
Link Speed | Uncontrolled Traffic • No feedback in the first RTT
Challenges in per-hop per-flow Flow Co
Backpressure Flow Control (BFC)
Only Track Active Flows • Active flow: flow with packets queued at the sw
Dynamic Queue Assignment
Communicate State across Swita
Evaluation: Simulation (Incast)
Thank You • Per-hop per-flow flow control is great
Taught by
USENIX