100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 Concurrency 0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000 90,000 100,000 110,000 120,000 130,000 Duration (ms) 0 2 4 6 8 10 12 14 16 Avg Max Queue Length 20,000 40,000 60,000 80,000 100,000 120,000 Duration Duration and Queue Length by Concurrency (nested async stream)