Today's transport is slow. We face extreme challenges in providing low latency in data centers. However, fair sharing, a principle commonly adopted in current congestion control protocols, is far from optimal for satisfying latency requirements.

Finishing flows quickly with preemptive scheduling. We propose PDQ, a protocol designed to complete flows quickly by approximating a range of scheduling disciplines via flow preemption. We found PDQ can save ~30% mean flow completion time compared with current transport protocols.

Significantly faster. See our [paper] for more details. You can also download our [simulation code].