bounded_4_thread_concurrent_write/log Iterations (x 10^3) Average Time (ns) 0 10 20 30 40 50 60 70 80 90 100 50 100 150 200 250 300 350 400 450 500 Density (a.u.) 0 0.001 0.002 0.003 0.004 0.005 0.006 0.007 PDF Mean "Clean" sample Mild outliers Severe outliers