Start at cwnd = 1 MSS with ssthresh = 8 MSS. Five clean round trips, then three duplicate ACKs, then two clean round trips, then a timeout, then one more clean round trip. Write cwnd after every step — and no step is harder than doubling or halving.
cwnd against round trips
bitsarebits.com · CSE 316 — Data Communication & Networking · TCP congestion control and AIMD