Gnuplot Produced by GNUPLOT 5.3 patchlevel 0 0 10 20 30 40 50 60 70 80 90 100 0 0.2 0.4 0.6 0.8 1 1.2 Total sample time (ms) Iterations (x 106) sort/Unstable/100 Sample Sample Linear regression Linear regression Confidence interval Confidence interval