criterion performance measurements

overview

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Repa V1

lower bound estimate upper bound
Mean execution time 0.5494138923368729 0.566694916792897 0.5885779276571546
Standard deviation 8.266333647179995e-2 9.895293096213478e-2 0.11955745368018285

Outlying measurements have severe (0.9255677195491524%) effect on estimated standard deviation.

Repa V2

lower bound estimate upper bound
Mean execution time 8.338413626768934e-2 8.362912566283097e-2 8.395527512648451e-2
Standard deviation 1.1415786489407309e-3 1.4324009640563947e-3 1.9221590878415284e-3

Outlying measurements have slight (9.467394153658668e-2%) effect on estimated standard deviation.

Repa V3

lower bound estimate upper bound
Mean execution time 3.962887913802019e-2 3.968628317931047e-2 3.977122933485857e-2
Standard deviation 2.66858398208728e-4 3.5617795425859397e-4 5.84779097697973e-4

Outlying measurements have no (9.899999999999942e-3%) effect on estimated standard deviation.

Nikola V1

lower bound estimate upper bound
Mean execution time 9.495567948439466e-2 9.520022780516497e-2 9.553316266157975e-2
Standard deviation 1.14606096895128e-3 1.4558405747366586e-3 1.8749352851905815e-3

Outlying measurements have slight (8.458805490651118e-2%) effect on estimated standard deviation.

Nikola V2

lower bound estimate upper bound
Mean execution time 3.6634751864460614e-2 3.6637817927387864e-2 3.6641387053517e-2
Standard deviation 1.4231856081697767e-5 1.6820356382453772e-5 2.062213865648432e-5

Outlying measurements have no (9.899999999999874e-3%) effect on estimated standard deviation.

Nikola V3

lower bound estimate upper bound
Mean execution time 4.370583601978921e-3 4.374631949452062e-3 4.379290648487706e-3
Standard deviation 1.9014269002960015e-5 2.2269988231314658e-5 2.7141906829596908e-5

Outlying measurements have no (9.899999999999975e-3%) effect on estimated standard deviation.

Nikola V4

lower bound estimate upper bound
Mean execution time 4.866422720936436e-3 4.869736739185951e-3 4.880060263661047e-3
Standard deviation 1.0764712791868609e-5 2.7256979112418395e-5 6.045602179336439e-5

Outlying measurements have no (9.899999999999957e-3%) effect on estimated standard deviation.

Nikola V5

lower bound estimate upper bound
Mean execution time 5.076049872425698e-3 5.079378195789953e-3 5.08743912794938e-3
Standard deviation 1.2919136303670815e-5 2.4914248910873428e-5 5.178385648461335e-5

Outlying measurements have no (9.9e-3%) effect on estimated standard deviation.

understanding this report

In this report, each function benchmarked by criterion is assigned a section of its own. In each section, we display two charts, each with an x axis that represents measured execution time. These charts are active; if you hover your mouse over data points and annotations, you will see more details.

Under the charts is a small table displaying the mean and standard deviation of the measurements. We use a statistical technique called the bootstrap to provide confidence intervals on our estimates of these values. The bootstrap-derived upper and lower bounds on the mean and standard deviation let you see how accurate we believe those estimates to be. (Hover the mouse over the table headers to see the confidence levels.)

A noisy benchmarking environment can cause some or many measurements to fall far from the mean. These outlying measurements can have a significant inflationary effect on the estimate of the standard deviation. We calculate and display an estimate of the extent to which the standard deviation has been inflated by outliers.