maeder@leibniz:~/haskell/examples> ghc --make -fforce-recomp -O0 Bench.hs [1 of 1] Compiling Main ( Bench.hs, Bench.o ) Linking Bench ... maeder@leibniz:~/haskell/examples> ./Bench -s 10 100000000 warming up estimating clock resolution... mean is 17.53661 us (40001 iterations) found 1866 outliers among 39999 samples (4.7%) 1370 (3.4%) high severe estimating cost of a clock call... mean is 1.366620 us (70 iterations) found 3 outliers among 70 samples (4.3%) 1 (1.4%) high mild 2 (2.9%) high severe benchmarking prepend 200000000 collecting 10 samples, 1 iterations each, in estimated 20.89278 s 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 bootstrapping with 100000 resamples mean: 10.24436 us, lb 9.791369 us, ub 10.84041 us, ci 0.950 std dev: 878.1661 ns, lb 615.5941 ns, ub 1.108069 us, ci 0.950 variance introduced by outliers: 9.787% variance is slightly inflated by outliers benchmarking prependToAll 200000000 collecting 10 samples, 1 iterations each, in estimated 24.10117 s 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 bootstrapping with 100000 resamples mean: 10.38742 us, lb 9.910578 us, ub 11.57951 us, ci 0.950 std dev: 1.231445 us, lb 408.3389 ns, ub 2.033791 us, ci 0.950 found 1 outliers among 10 samples (10.0%) 1 (10.0%) high severe variance introduced by outliers: 9.889% variance is slightly inflated by outliers maeder@leibniz:~/haskell/examples> ghc --make -fforce-recomp -O2 Bench.hs [1 of 1] Compiling Main ( Bench.hs, Bench.o ) Linking Bench ... maeder@leibniz:~/haskell/examples> ./Bench -s 10 100000000 warming up estimating clock resolution... mean is 17.19073 us (40001 iterations) found 1624 outliers among 39999 samples (4.1%) 568 (1.4%) high mild 1056 (2.6%) high severe estimating cost of a clock call... mean is 1.372403 us (62 iterations) found 3 outliers among 62 samples (4.8%) 3 (4.8%) high mild benchmarking prepend 200000000 collecting 10 samples, 1 iterations each, in estimated 21.06879 s 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 bootstrapping with 100000 resamples mean: 2.037685 s, lb 2.035850 s, ub 2.039932 s, ci 0.950 std dev: 3.441953 ms, lb 2.379356 ms, ub 4.579715 ms, ci 0.950 variance introduced by outliers: 9.000% variance is slightly inflated by outliers benchmarking prependToAll 200000000 collecting 10 samples, 1 iterations each, in estimated 21.60974 s 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 200000000 bootstrapping with 100000 resamples mean: 2.149744 s, lb 2.132435 s, ub 2.170067 s, ci 0.950 std dev: 31.60195 ms, lb 27.30131 ms, ub 37.08768 ms, ci 0.950 variance introduced by outliers: 9.000% variance is slightly inflated by outliers