Performance Shift(s): b5bdaffc

[github-actions]

Benchmark comparison has identified performance shifts at:

• commit b5bdaff (Demo Numpy v2 #6035).

Please review the report below and take corrective/congratulatory action as appropriate :slightly_smiling_face:

⏱️ Performance Benchmark Report: b5bdaff

Performance shifts

| Change   | Before [dd0432e4] <main~1>   | After [b5bdaffc] <main>   |   Ratio | Benchmark (Parameter)                                                           |
|----------|------------------------------|---------------------------|---------|---------------------------------------------------------------------------------|
| -        | 1.35±0.01s                   | 1.08±0.01s                |    0.8  | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(False)                   |
| -        | 1.35±0.01s                   | 1.09±0.01s                |    0.81 | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(True)                    |
| -        | 708±10ms                     | 505±20ms                  |    0.71 | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(False)             |
| -        | 713±10ms                     | 521±20ms                  |    0.73 | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(True)              |
| -        | 35.1±3ms                     | 25.7±1ms                  |    0.73 | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                   |
| -        | 6.75±1ms                     | 3.97±0.4ms                |    0.59 | load.ugrid.DataRealisation.time_realise_data(200000)                            |
| -        | 258±3ms                      | 210±1ms                   |    0.82 | mesh.utils.regions_combine.CombineRegionsComputeRealData.time_compute_data(500) |
| -        | 18.8±0.3ms                   | 9.23±0.3ms                |    0.49 | stats.PearsonR.time_real                                                        |
| -        | 27.2±1ms                     | 22.1±1ms                  |    0.81 | trajectory.TrajectoryInterpolation.time_trajectory_linear                       |
| Change   | Before [dd0432e4] <main~1>   | After [b5bdaffc] <main>   |   Ratio | Benchmark (Parameter)                   |
|----------|------------------------------|---------------------------|---------|-----------------------------------------|
| +        | 1.06±0.01ms                  | 1.54±0.01ms               |    1.45 | import_iris.Iris.time_third_party_numpy |
| +        | 20±0.07M                     | 24.4±0.7M                 |    1.22 | stats.PearsonR.tracemalloc_lazy         |

Full benchmark results

Benchmarks that have improved:

| Change   | Before [dd0432e4] <main~1>   | After [b5bdaffc] <main>   |   Ratio | Benchmark (Parameter)                                                           |
|----------|------------------------------|---------------------------|---------|---------------------------------------------------------------------------------|
| -        | 1.35±0.01s                   | 1.08±0.01s                |    0.8  | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(False)                   |
| -        | 1.35±0.01s                   | 1.09±0.01s                |    0.81 | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(True)                    |
| -        | 708±10ms                     | 505±20ms                  |    0.71 | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(False)             |
| -        | 713±10ms                     | 521±20ms                  |    0.73 | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(True)              |
| -        | 35.1±3ms                     | 25.7±1ms                  |    0.73 | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                   |
| -        | 6.75±1ms                     | 3.97±0.4ms                |    0.59 | load.ugrid.DataRealisation.time_realise_data(200000)                            |
| -        | 258±3ms                      | 210±1ms                   |    0.82 | mesh.utils.regions_combine.CombineRegionsComputeRealData.time_compute_data(500) |
| -        | 18.8±0.3ms                   | 9.23±0.3ms                |    0.49 | stats.PearsonR.time_real                                                        |
| -        | 27.2±1ms                     | 22.1±1ms                  |    0.81 | trajectory.TrajectoryInterpolation.time_trajectory_linear                       |

Benchmarks that have stayed the same:

| Change   | Before [dd0432e4] <main~1>   | After [b5bdaffc] <main>   |   Ratio | Benchmark (Parameter)                                                                       |
|----------|------------------------------|---------------------------|---------|---------------------------------------------------------------------------------------------|
|          | 60.4±1ms                     | 60.2±0.5ms                |    1    | aggregate_collapse.Aggregation.time_aggregated_by_COUNT(False)                              |
|          | 61.2±1ms                     | 60.9±1ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_COUNT(True)                               |
|          | 222±3ms                      | 216±2ms                   |    0.97 | aggregate_collapse.Aggregation.time_aggregated_by_FAST_PERCENTILE(False)                    |
|          | 222±3ms                      | 216±2ms                   |    0.97 | aggregate_collapse.Aggregation.time_aggregated_by_FAST_PERCENTILE(True)                     |
|          | 39.2±0.3ms                   | 39.0±0.4ms                |    1    | aggregate_collapse.Aggregation.time_aggregated_by_GMEAN(False)                              |
|          | 39.7±0.4ms                   | 40.2±0.2ms                |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_GMEAN(True)                               |
|          | 39.1±0.3ms                   | 39.2±0.4ms                |    1    | aggregate_collapse.Aggregation.time_aggregated_by_HMEAN(False)                              |
|          | 40.1±0.6ms                   | 40.0±0.8ms                |    1    | aggregate_collapse.Aggregation.time_aggregated_by_HMEAN(True)                               |
|          | 52.4±1ms                     | 51.6±0.3ms                |    0.98 | aggregate_collapse.Aggregation.time_aggregated_by_MAX(False)                                |
|          | 52.7±1ms                     | 53.1±2ms                  |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_MAX(True)                                 |
|          | 136±2ms                      | 138±2ms                   |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_MAX_RUN(False)                            |
|          | 138±0.6ms                    | 137±2ms                   |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_MAX_RUN(True)                             |
|          | 57.3±0.7ms                   | 57.2±0.8ms                |    1    | aggregate_collapse.Aggregation.time_aggregated_by_MEAN(False)                               |
|          | 58.3±0.8ms                   | 58.5±0.6ms                |    1    | aggregate_collapse.Aggregation.time_aggregated_by_MEAN(True)                                |
|          | 39.3±0.2ms                   | 39.4±0.5ms                |    1    | aggregate_collapse.Aggregation.time_aggregated_by_MEDIAN(False)                             |
|          | 39.6±0.2ms                   | 39.9±0.4ms                |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_MEDIAN(True)                              |
|          | 51.6±0.9ms                   | 51.9±0.5ms                |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_MIN(False)                                |
|          | 52.9±1ms                     | 52.8±1ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_MIN(True)                                 |
|          | 37.1±0.5ms                   | 37.5±0.6ms                |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_PROPORTION(False)                         |
|          | 38.2±0.4ms                   | 38.5±0.5ms                |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_PROPORTION(True)                          |
|          | 70.5±0.5ms                   | 69.0±0.5ms                |    0.98 | aggregate_collapse.Aggregation.time_aggregated_by_RMS(False)                                |
|          | 71.3±2ms                     | 70.1±0.9ms                |    0.98 | aggregate_collapse.Aggregation.time_aggregated_by_RMS(True)                                 |
|          | 73.2±1ms                     | 71.1±0.6ms                |    0.97 | aggregate_collapse.Aggregation.time_aggregated_by_STD_DEV(False)                            |
|          | 73.4±1ms                     | 71.8±0.8ms                |    0.98 | aggregate_collapse.Aggregation.time_aggregated_by_STD_DEV(True)                             |
|          | 67.2±0.8ms                   | 66.7±1ms                  |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_VARIANCE(False)                           |
|          | 68.2±1ms                     | 67.3±1ms                  |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_VARIANCE(True)                            |
|          | 26.1±0.2ms                   | 25.7±0.3ms                |    0.98 | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(False)                               |
|          | 30.2±0.5ms                   | 30.4±0.3ms                |    1.01 | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(True)                                |
|          | 153±1ms                      | 152±2ms                   |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_FAST_PERCENTILE(False)                     |
|          | 169±0.7ms                    | 165±0.4ms                 |    0.98 | aggregate_collapse.Aggregation.time_collapsed_by_FAST_PERCENTILE(True)                      |
|          | 24.0±0.2ms                   | 24.2±0.4ms                |    1.01 | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(False)                               |
|          | 28.5±0.3ms                   | 28.6±0.4ms                |    1    | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(True)                                |
|          | 24.1±0.4ms                   | 24.0±0.6ms                |    1    | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(False)                               |
|          | 28.4±0.4ms                   | 28.4±0.4ms                |    1    | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(True)                                |
|          | 24.8±0.5ms                   | 25.0±0.5ms                |    1.01 | aggregate_collapse.Aggregation.time_collapsed_by_MAX(False)                                 |
|          | 29.0±0.4ms                   | 29.1±0.8ms                |    1    | aggregate_collapse.Aggregation.time_collapsed_by_MAX(True)                                  |
|          | 38.1±0.8ms                   | 38.6±0.6ms                |    1.01 | aggregate_collapse.Aggregation.time_collapsed_by_MAX_RUN(False)                             |
|          | 42.9±0.6ms                   | 43.1±0.6ms                |    1    | aggregate_collapse.Aggregation.time_collapsed_by_MAX_RUN(True)                              |
|          | 25.2±0.5ms                   | 25.6±0.5ms                |    1.02 | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(False)                                |
|          | 29.8±0.4ms                   | 29.6±0.3ms                |    1    | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(True)                                 |
|          | 24.9±0.3ms                   | 25.4±0.3ms                |    1.02 | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(False)                              |
|          | 29.1±0.5ms                   | 29.6±0.5ms                |    1.02 | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(True)                               |
|          | 25.0±0.5ms                   | 25.1±0.4ms                |    1.01 | aggregate_collapse.Aggregation.time_collapsed_by_MIN(False)                                 |
|          | 29.1±0.5ms                   | 29.1±0.3ms                |    1    | aggregate_collapse.Aggregation.time_collapsed_by_MIN(True)                                  |
|          | 582±5ms                      | 548±5ms                   |    0.94 | aggregate_collapse.Aggregation.time_collapsed_by_PEAK(False)                                |
|          | 594±4ms                      | 549±4ms                   |    0.92 | aggregate_collapse.Aggregation.time_collapsed_by_PEAK(True)                                 |
|          | 171±1ms                      | 166±1ms                   |    0.97 | aggregate_collapse.Aggregation.time_collapsed_by_PERCENTILE(False)                          |
|          | 192±2ms                      | 185±1ms                   |    0.96 | aggregate_collapse.Aggregation.time_collapsed_by_PERCENTILE(True)                           |
|          | 23.7±0.4ms                   | 23.9±0.5ms                |    1.01 | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(False)                          |
|          | 28.1±0.2ms                   | 27.9±0.3ms                |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(True)                           |
|          | 27.6±0.5ms                   | 27.2±0.6ms                |    0.98 | aggregate_collapse.Aggregation.time_collapsed_by_RMS(False)                                 |
|          | 31.7±0.3ms                   | 31.4±0.5ms                |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_RMS(True)                                  |
|          | 27.5±0.4ms                   | 26.8±0.3ms                |    0.98 | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(False)                             |
|          | 31.7±0.6ms                   | 30.9±0.4ms                |    0.97 | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(True)                              |
|          | 26.9±0.3ms                   | 26.3±0.5ms                |    0.98 | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(False)                            |
|          | 31.0±0.2ms                   | 30.5±0.4ms                |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(True)                             |
|          | 95.1±1ms                     | 93.7±1ms                  |    0.99 | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_MEAN(False)                     |
|          | 95.9±0.9ms                   | 95.1±1ms                  |    0.99 | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_MEAN(True)                      |
|          | 109±0.8ms                    | 107±0.8ms                 |    0.98 | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_RMS(False)                      |
|          | 110±1ms                      | 108±1ms                   |    0.98 | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_RMS(True)                       |
|          | 65.0±0.8ms                   | 64.0±0.7ms                |    0.99 | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_SUM(False)                      |
|          | 65.9±0.8ms                   | 65.2±0.7ms                |    0.99 | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_SUM(True)                       |
|          | 31.8±0.5ms                   | 31.7±0.7ms                |    0.99 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_MEAN(False)                      |
|          | 35.8±0.5ms                   | 35.4±0.5ms                |    0.99 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_MEAN(True)                       |
|          | 34.1±0.7ms                   | 33.2±1ms                  |    0.97 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_RMS(False)                       |
|          | 37.9±0.6ms                   | 37.4±0.5ms                |    0.99 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_RMS(True)                        |
|          | 27.1±0.3ms                   | 26.8±0.3ms                |    0.99 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_SUM(False)                       |
|          | 31.4±0.5ms                   | 31.4±0.4ms                |    1    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_SUM(True)                        |
|          | 350±4ms                      | 338±3ms                   |    0.96 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_WPERCENTILE(False)               |
|          | 369±4ms                      | 351±2ms                   |    0.95 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_WPERCENTILE(True)                |
|          | 1.09±0.01ms                  | 1.11±0.01ms               |    1.01 | cube.CubeCreation.time_create(False, 'construct')                                           |
|          | 397±3μs                      | 397±3μs                   |    1    | cube.CubeCreation.time_create(False, 'instantiate')                                         |
|          | 952±10μs                     | 942±9μs                   |    0.99 | cube.CubeCreation.time_create(True, 'construct')                                            |
|          | 580±9μs                      | 577±8μs                   |    1    | cube.CubeCreation.time_create(True, 'instantiate')                                          |
|          | 249±2ms                      | 240±3ms                   |    0.96 | cube.CubeEquality.time_equality(False, False, 'all_equal')                                  |
|          | 129±1ms                      | 130±2ms                   |    1    | cube.CubeEquality.time_equality(False, False, 'coord_inequality')                           |
|          | 254±3ms                      | 266±2ms                   |    1.05 | cube.CubeEquality.time_equality(False, False, 'data_inequality')                            |
|          | 16.5±0.1μs                   | 16.5±0.2μs                |    1    | cube.CubeEquality.time_equality(False, False, 'metadata_inequality')                        |
|          | 350±3ms                      | 344±3ms                   |    0.98 | cube.CubeEquality.time_equality(False, True, 'all_equal')                                   |
|          | 236±2ms                      | 230±2ms                   |    0.98 | cube.CubeEquality.time_equality(False, True, 'coord_inequality')                            |
|          | 363±5ms                      | 370±3ms                   |    1.02 | cube.CubeEquality.time_equality(False, True, 'data_inequality')                             |
|          | 16.7±0.1μs                   | 16.9±0.4μs                |    1.01 | cube.CubeEquality.time_equality(False, True, 'metadata_inequality')                         |
|          | 247±2ms                      | 240±3ms                   |    0.97 | cube.CubeEquality.time_equality(True, False, 'all_equal')                                   |
|          | 128±2ms                      | 129±1ms                   |    1.01 | cube.CubeEquality.time_equality(True, False, 'coord_inequality')                            |
|          | 254±3ms                      | 267±2ms                   |    1.05 | cube.CubeEquality.time_equality(True, False, 'data_inequality')                             |
|          | 52.8±1μs                     | 54.2±0.7μs                |    1.03 | cube.CubeEquality.time_equality(True, False, 'metadata_inequality')                         |
|          | 351±4ms                      | 345±2ms                   |    0.98 | cube.CubeEquality.time_equality(True, True, 'all_equal')                                    |
|          | 234±2ms                      | 231±2ms                   |    0.99 | cube.CubeEquality.time_equality(True, True, 'coord_inequality')                             |
|          | 362±4ms                      | 368±4ms                   |    1.02 | cube.CubeEquality.time_equality(True, True, 'data_inequality')                              |
|          | 54.4±0.5μs                   | 55.6±0.4μs                |    1.02 | cube.CubeEquality.time_equality(True, True, 'metadata_inequality')                          |
|          | 811±10μs                     | 787±7μs                   |    0.97 | import_iris.Iris.time__concatenate                                                          |
|          | 185±2μs                      | 179±1μs                   |    0.97 | import_iris.Iris.time__constraints                                                          |
|          | 110±1μs                      | 108±0.7μs                 |    0.98 | import_iris.Iris.time__data_manager                                                         |
|          | 94.2±0.8μs                   | 93.1±1μs                  |    0.99 | import_iris.Iris.time__deprecation                                                          |
|          | 137±2μs                      | 135±3μs                   |    0.98 | import_iris.Iris.time__lazy_data                                                            |
|          | 926±10μs                     | 908±4μs                   |    0.98 | import_iris.Iris.time__merge                                                                |
|          | 76.4±0.8μs                   | 76.6±0.4μs                |    1    | import_iris.Iris.time__representation                                                       |
|          | 595±9μs                      | 589±8μs                   |    0.99 | import_iris.Iris.time_analysis                                                              |
|          | 141±1μs                      | 139±1μs                   |    0.98 | import_iris.Iris.time_analysis__area_weighted                                               |
|          | 110±2μs                      | 109±0.8μs                 |    0.99 | import_iris.Iris.time_analysis__grid_angles                                                 |
|          | 252±8μs                      | 241±2μs                   |    0.96 | import_iris.Iris.time_analysis__interpolation                                               |
|          | 190±2μs                      | 188±3μs                   |    0.99 | import_iris.Iris.time_analysis__regrid                                                      |
|          | 112±0.8μs                    | 111±1μs                   |    0.99 | import_iris.Iris.time_analysis__scipy_interpolate                                           |
|          | 139±2μs                      | 139±0.7μs                 |    0.99 | import_iris.Iris.time_analysis_calculus                                                     |
|          | 334±2μs                      | 329±2μs                   |    0.99 | import_iris.Iris.time_analysis_cartography                                                  |
|          | 94.7±0.4μs                   | 92.8±0.8μs                |    0.98 | import_iris.Iris.time_analysis_geomerty                                                     |
|          | 221±4μs                      | 216±2μs                   |    0.98 | import_iris.Iris.time_analysis_maths                                                        |
|          | 98.1±0.9μs                   | 97.2±0.8μs                |    0.99 | import_iris.Iris.time_analysis_stats                                                        |
|          | 176±5μs                      | 174±2μs                   |    0.99 | import_iris.Iris.time_analysis_trajectory                                                   |
|          | 306±5μs                      | 301±3μs                   |    0.98 | import_iris.Iris.time_aux_factory                                                           |
|          | 83.9±1μs                     | 83.9±1μs                  |    1    | import_iris.Iris.time_common                                                                |
|          | 162±2μs                      | 162±2μs                   |    1    | import_iris.Iris.time_common_lenient                                                        |
|          | 1.35±0.01ms                  | 1.33±0.02ms               |    0.99 | import_iris.Iris.time_common_metadata                                                       |
|          | 138±1μs                      | 137±0.5μs                 |    0.99 | import_iris.Iris.time_common_mixin                                                          |
|          | 1.20±0.01ms                  | 1.19±0.01ms               |    0.99 | import_iris.Iris.time_common_resolve                                                        |
|          | 198±3μs                      | 197±1μs                   |    1    | import_iris.Iris.time_config                                                                |
|          | 124±1μs                      | 124±1μs                   |    1    | import_iris.Iris.time_coord_categorisation                                                  |
|          | 366±4μs                      | 358±6μs                   |    0.98 | import_iris.Iris.time_coord_systems                                                         |
|          | 751±5μs                      | 742±3μs                   |    0.99 | import_iris.Iris.time_coords                                                                |
|          | 656±5μs                      | 649±6μs                   |    0.99 | import_iris.Iris.time_cube                                                                  |
|          | 232±4μs                      | 224±2μs                   |    0.97 | import_iris.Iris.time_exceptions                                                            |
|          | 77.7±0.9μs                   | 76.7±0.5μs                |    0.99 | import_iris.Iris.time_experimental                                                          |
|          | 185±1μs                      | 184±2μs                   |    0.99 | import_iris.Iris.time_fileformats                                                           |
|          | 253±3μs                      | 251±3μs                   |    0.99 | import_iris.Iris.time_fileformats__ff                                                       |
|          | 2.74±0.01ms                  | 2.75±0.04ms               |    1    | import_iris.Iris.time_fileformats__ff_cross_references                                      |
|          | 79.8±0.6μs                   | 78.5±0.7μs                |    0.98 | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                          |
|          | 115±1μs                      | 114±0.9μs                 |    0.99 | import_iris.Iris.time_fileformats_abf                                                       |
|          | 410±4μs                      | 403±2μs                   |    0.98 | import_iris.Iris.time_fileformats_cf                                                        |
|          | 5.35±0.05ms                  | 5.30±0.04ms               |    0.99 | import_iris.Iris.time_fileformats_dot                                                       |
|          | 76.5±2μs                     | 75.3±0.4μs                |    0.98 | import_iris.Iris.time_fileformats_name                                                      |
|          | 259±2μs                      | 259±2μs                   |    1    | import_iris.Iris.time_fileformats_name_loaders                                              |
|          | 121±1μs                      | 120±2μs                   |    1    | import_iris.Iris.time_fileformats_netcdf                                                    |
|          | 125±0.9μs                    | 123±0.8μs                 |    0.98 | import_iris.Iris.time_fileformats_nimrod                                                    |
|          | 214±2μs                      | 210±3μs                   |    0.98 | import_iris.Iris.time_fileformats_nimrod_load_rules                                         |
|          | 784±4μs                      | 782±7μs                   |    1    | import_iris.Iris.time_fileformats_pp                                                        |
|          | 185±1μs                      | 182±1μs                   |    0.98 | import_iris.Iris.time_fileformats_pp_load_rules                                             |
|          | 137±1μs                      | 135±2μs                   |    0.99 | import_iris.Iris.time_fileformats_pp_save_rules                                             |
|          | 525±5μs                      | 520±2μs                   |    0.99 | import_iris.Iris.time_fileformats_rules                                                     |
|          | 221±2μs                      | 221±2μs                   |    1    | import_iris.Iris.time_fileformats_structured_array_identification                           |
|          | 83.9±0.8μs                   | 84.0±0.7μs                |    1    | import_iris.Iris.time_fileformats_um                                                        |
|          | 162±0.7μs                    | 160±1μs                   |    0.98 | import_iris.Iris.time_fileformats_um__fast_load                                             |
|          | 138±0.7μs                    | 137±0.8μs                 |    1    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                           |
|          | 75.8±0.5μs                   | 75.9±0.7μs                |    1    | import_iris.Iris.time_fileformats_um__ff_replacement                                        |
|          | 82.3±0.3μs                   | 82.3±0.6μs                |    1    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                             |
|          | 994±4μs                      | 991±9μs                   |    1    | import_iris.Iris.time_fileformats_um_cf_map                                                 |
|          | 137±1μs                      | 137±2μs                   |    1    | import_iris.Iris.time_io                                                                    |
|          | 176±2μs                      | 173±1μs                   |    0.98 | import_iris.Iris.time_io_format_picker                                                      |
|          | 231±2μs                      | 229±2μs                   |    0.99 | import_iris.Iris.time_iris                                                                  |
|          | 128±2μs                      | 126±0.9μs                 |    0.99 | import_iris.Iris.time_iterate                                                               |
|          | 8.32±0.08ms                  | 8.39±0.1ms                |    1.01 | import_iris.Iris.time_palette                                                               |
|          | 1.91±0.02ms                  | 1.90±0.01ms               |    0.99 | import_iris.Iris.time_plot                                                                  |
|          | 105±0.7μs                    | 103±0.8μs                 |    0.98 | import_iris.Iris.time_quickplot                                                             |
|          | 2.20±0.02ms                  | 2.21±0.03ms               |    1    | import_iris.Iris.time_std_names                                                             |
|          | 1.79±0.03ms                  | 1.75±0.01ms               |    0.98 | import_iris.Iris.time_symbols                                                               |
|          | 34.4±1ms                     | 34.3±0.7ms                |    1    | import_iris.Iris.time_tests                                                                 |
|          | 255±3μs                      | 254±2μs                   |    1    | import_iris.Iris.time_third_party_cartopy                                                   |
|          | 4.79±0.03ms                  | 4.76±0.05ms               |    0.99 | import_iris.Iris.time_third_party_cf_units                                                  |
|          | 119±0.9μs                    | 119±3μs                   |    1    | import_iris.Iris.time_third_party_cftime                                                    |
|          | 2.83±0.03ms                  | 2.83±0.02ms               |    1    | import_iris.Iris.time_third_party_matplotlib                                                |
|          | 171±2μs                      | 169±2μs                   |    0.99 | import_iris.Iris.time_third_party_scipy                                                     |
|          | 100±0.8μs                    | 101±1μs                   |    1.01 | import_iris.Iris.time_time                                                                  |
|          | 325±3μs                      | 330±3μs                   |    1.02 | import_iris.Iris.time_util                                                                  |
|          | 71.9±0.5μs                   | 71.7±0.9μs                |    1    | iterate.IZip.time_izip                                                                      |
|          | 8.91±0.04ms                  | 8.86±0.03ms               |    0.99 | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                  |
|          | 26.8±0.5ms                   | 26.0±0.3ms                |    0.97 | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                              |
|          | 9.93±0.1ms                   | 8.98±0.03ms               |    0.9  | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                  |
|          | 8.92±0.06ms                  | 8.97±0.1ms                |    1.01 | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                   |
|          | 21.6±0.2ms                   | 21.5±0.2ms                |    0.99 | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                               |
|          | 9.66±0.07ms                  | 8.91±0.06ms               |    0.92 | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                   |
|          | 1.52±0.01s                   | 1.51±0.02s                |    0.99 | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                    |
|          | 21.8±0.4ms                   | 21.4±0.5ms                |    0.98 | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                |
|          | 1.68±0.01s                   | 1.55±0.01s                |    0.93 | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                    |
|          | 1.52±0.02s                   | 1.52±0.01s                |    1    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                     |
|          | 21.7±0.3ms                   | 21.3±0.2ms                |    0.98 | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                 |
|          | 1.68±0.01s                   | 1.55±0.02s                |    0.92 | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                     |
|          | 4.26±0.04ms                  | 4.24±0.02ms               |    0.99 | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                     |
|          | 20.1±0.4ms                   | 20.1±0.2ms                |    1    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                 |
|          | 4.52±0.04ms                  | 4.21±0.02ms               |    0.93 | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                     |
|          | 4.25±0.03ms                  | 4.24±0.03ms               |    1    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                      |
|          | 20.3±0.2ms                   | 19.8±0.1ms                |    0.98 | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                  |
|          | 4.52±0.05ms                  | 4.21±0.06ms               |    0.93 | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                      |
|          | 20.7±0.4ms                   | 20.5±0.2ms                |    0.99 | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                           |
|          | 14.2±2ms                     | 14.3±1ms                  |    1    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                               |
|          | 27.4±2ms                     | 26.6±2ms                  |    0.97 | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                |
|          | 71.2±1ms                     | 79.8±0.6ms                |    1.12 | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                            |
|          | 26.0±1ms                     | 26.1±1ms                  |    1    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                |
|          | 495±3ms                      | 486±3ms                   |    0.98 | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                 |
|          | 2.94±0.09ms                  | 3.06±0.1ms                |    1.04 | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                             |
|          | 501±3ms                      | 490±3ms                   |    0.98 | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                 |
|          | 501±4ms                      | 500±3ms                   |    1    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                  |
|          | 3.02±0.09ms                  | 3.01±0.09ms               |    1    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                              |
|          | 506±4ms                      | 497±4ms                   |    0.98 | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                  |
|          | 1.74±0.06ms                  | 1.70±0.1ms                |    0.98 | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                  |
|          | 2.99±0.1ms                   | 2.82±0.06ms               |    0.94 | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                              |
|          | 1.75±0.09ms                  | 1.74±0.09ms               |    0.99 | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                  |
|          | 1.73±0.1ms                   | 1.74±0.06ms               |    1.01 | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                   |
|          | 2.96±0.09ms                  | 2.93±0.06ms               |    0.99 | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                               |
|          | 1.76±0.08ms                  | 1.72±0.09ms               |    0.98 | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                   |
|          | 359±4ms                      | 359±1ms                   |    1    | load.ManyVars.time_many_var_load                                                            |
|          | 9.14±0.06ms                  | 8.94±0.1ms                |    0.98 | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                            |
|          | 9.90±0.06ms                  | 9.04±0.05ms               |    0.91 | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                            |
|          | 1.54±0.01s                   | 1.53±0.01s                |    0.99 | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                              |
|          | 1.72±0.01s                   | 1.54±0.01s                |    0.9  | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                              |
|          | 4.33±0.02ms                  | 4.29±0.03ms               |    0.99 | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                 |
|          | 4.62±0.08ms                  | 4.28±0.03ms               |    0.93 | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                 |
|          | 8.92±0.07ms                  | 8.87±0.1ms                |    0.99 | load.StructuredFF.time_structured_load((1280, 960, 5), False)                               |
|          | 5.80±0.05ms                  | 5.86±0.05ms               |    1.01 | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                |
|          | 1.52±0.01s                   | 1.50±0.01s                |    0.99 | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                 |
|          | 542±4ms                      | 541±7ms                   |    1    | load.StructuredFF.time_structured_load((2, 2, 1000), True)                                  |
|          | 4.21±0.04ms                  | 4.20±0.04ms               |    1    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                    |
|          | 4.13±0.03ms                  | 4.09±0.02ms               |    0.99 | load.StructuredFF.time_structured_load((2, 2, 2), True)                                     |
|          | 165±3ms                      | 161±1ms                   |    0.97 | load.TimeConstraint.time_time_constraint(20, 'FF')                                          |
|          | 24.0±0.3ms                   | 23.4±0.1ms                |    0.97 | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                      |
|          | 181±2ms                      | 163±1ms                   |    0.9  | load.TimeConstraint.time_time_constraint(20, 'PP')                                          |
|          | 31.5±0.08ms                  | 31.3±0.1ms                |    0.99 | load.TimeConstraint.time_time_constraint(3, 'FF')                                           |
|          | 23.4±0.5ms                   | 22.9±0.1ms                |    0.98 | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                       |
|          | 34.0±0.2ms                   | 31.6±0.3ms                |    0.93 | load.TimeConstraint.time_time_constraint(3, 'PP')                                           |
|          | 18.1±0.4ms                   | 18.0±0.3ms                |    1    | load.ugrid.BasicLoading.time_load_file(1)                                                   |
|          | 47.1±0.7ms                   | 46.4±0.6ms                |    0.99 | load.ugrid.BasicLoading.time_load_file(200000)                                              |
|          | 14.5±0.4ms                   | 14.6±0.2ms                |    1.01 | load.ugrid.BasicLoading.time_load_mesh(1)                                                   |
|          | 25.5±0.3ms                   | 25.5±0.8ms                |    1    | load.ugrid.BasicLoading.time_load_mesh(200000)                                              |
|          | 18.0±0.4ms                   | 17.8±0.3ms                |    0.99 | load.ugrid.BasicLoadingTime.time_load_file(1)                                               |
|          | 23.1±0.4ms                   | 22.7±0.3ms                |    0.98 | load.ugrid.BasicLoadingTime.time_load_file(200000)                                          |
|          | 14.7±0.3ms                   | 14.5±0.2ms                |    0.99 | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                               |
|          | 19.6±0.7ms                   | 19.0±0.2ms                |    0.97 | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                          |
|          | 19.2±0.4ms                   | 18.7±0.2ms                |    0.97 | load.ugrid.Callback.time_load_file_callback(1)                                              |
|          | 56.9±0.5ms                   | 56.3±0.6ms                |    0.99 | load.ugrid.Callback.time_load_file_callback(200000)                                         |
|          | 18.9±0.4ms                   | 18.6±0.2ms                |    0.98 | load.ugrid.CallbackTime.time_load_file_callback(1)                                          |
|          | 24.9±0.5ms                   | 24.3±0.4ms                |    0.98 | load.ugrid.CallbackTime.time_load_file_callback(200000)                                     |
|          | 2.80±0.06ms                  | 2.79±0.08ms               |    1    | load.ugrid.DataRealisation.time_realise_data(10000)                                         |
|          | 37.2±0.9ms                   | 37.6±1ms                  |    1.01 | load.ugrid.DataRealisationTime.time_realise_data(10000)                                     |
|          | 803±6ms                      | 799±5ms                   |    1    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                    |
|          | 432±4ms                      | 423±3ms                   |    0.98 | merge_concat.Concatenate.time_concatenate(False)                                            |
|          | 435±4ms                      | 422±3ms                   |    0.97 | merge_concat.Concatenate.time_concatenate(True)                                             |
|          | 109±0.2M                     | 109±0.4M                  |    1    | merge_concat.Concatenate.tracemalloc_concatenate(False)                                     |
|          | 109±0.2M                     | 109±0.4M                  |    1    | merge_concat.Concatenate.tracemalloc_concatenate(True)                                      |
|          | 58.9±0.7ms                   | 57.7±0.5ms                |    0.98 | merge_concat.Merge.time_merge                                                               |
|          | 1.13±0.3M                    | 979±300k                  |    0.86 | merge_concat.Merge.tracemalloc_merge                                                        |
|          | 468±3ns                      | 462±4ns                   |    0.99 | mesh.utils.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)              |
|          | 659±2k                       | 658±2k                    |    1    | mesh.utils.regions_combine.CombineRegionsComputeRealData.tracemalloc_compute_data(50)       |
|          | 60.1±0M                      | 60.1±0M                   |    1    | mesh.utils.regions_combine.CombineRegionsComputeRealData.tracemalloc_compute_data(500)      |
|          | 16.8±0.1ms                   | 16.8±0.2ms                |    1    | mesh.utils.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)           |
|          | 18.4±0.4ms                   | 18.3±0.3ms                |    0.99 | mesh.utils.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)          |
|          | 502±10k                      | 502±30k                   |    1    | mesh.utils.regions_combine.CombineRegionsCreateCube.tracemalloc_create_combined_cube(50)    |
|          | 12.4±0.01M                   | 12.4±0.03M                |    1    | mesh.utils.regions_combine.CombineRegionsCreateCube.tracemalloc_create_combined_cube(500)   |
|          | 119±2ms                      | 117±0.7ms                 |    0.99 | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)         |
|          | 733±8ms                      | 689±9ms                   |    0.94 | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)        |
|          | 1.21±0.02M                   | 1.21±0.03M                |    1    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.tracemalloc_stream_file2file(50)  |
|          | 96.2±0.03M                   | 96.2±0.02M                |    1    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.tracemalloc_stream_file2file(500) |
|          | 79.4±1ms                     | 77.7±1ms                  |    0.98 | mesh.utils.regions_combine.CombineRegionsSaveData.time_save(50)                             |
|          | 685±4ms                      | 640±5ms                   |    0.94 | mesh.utils.regions_combine.CombineRegionsSaveData.time_save(500)                            |
|          | 1.18±0.02M                   | 1.18±0.01M                |    1    | mesh.utils.regions_combine.CombineRegionsSaveData.tracemalloc_save(50)                      |
|          | 96.2±0.01M                   | 96.2±0.01M                |    1    | mesh.utils.regions_combine.CombineRegionsSaveData.tracemalloc_save(500)                     |
|          | 2.1752849999999997           | 2.1752849999999997        |    1    | mesh.utils.regions_combine.CombineRegionsSaveData.track_filesize_saved(50)                  |
|          | 216.01528499999998           | 216.01528499999998        |    1    | mesh.utils.regions_combine.CombineRegionsSaveData.track_filesize_saved(500)                 |
|          | 6.60±0.04ms                  | 6.46±0.02ms               |    0.98 | plot.AuxSort.time_aux_sort                                                                  |
|          | 84.6±3ms                     | 81.2±3ms                  |    0.96 | regridding.CurvilinearRegridding.time_regrid_pic                                            |
|          | 136±3M                       | 136±3M                    |    1    | regridding.CurvilinearRegridding.tracemalloc_regrid_pic                                     |
|          | 102±0.6ms                    | 101±0.7ms                 |    0.99 | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                   |
|          | 51.9±2ms                     | 49.1±0.8ms                |    0.95 | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                          |
|          | 106±0.04M                    | 106±0.05M                 |    1    | regridding.HorizontalChunkedRegridding.tracemalloc_regrid_area_w                            |
|          | 147±0.02M                    | 147±0.03M                 |    1    | regridding.HorizontalChunkedRegridding.tracemalloc_regrid_area_w_new_grid                   |
|          | 4.39±0.05ms                  | 4.46±0.06ms               |    1.02 | save.NetcdfSave.time_netcdf_save_cube(50, False)                                            |
|          | 80.8±0.6ms                   | 81.5±0.7ms                |    1.01 | save.NetcdfSave.time_netcdf_save_cube(50, True)                                             |
|          | 55.0±1ms                     | 53.4±1ms                  |    0.97 | save.NetcdfSave.time_netcdf_save_cube(600, False)                                           |
|          | 595±4ms                      | 590±5ms                   |    0.99 | save.NetcdfSave.time_netcdf_save_cube(600, True)                                            |
|          | 93.1±3ns                     | 91.5±1ns                  |    0.98 | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                            |
|          | 62.9±0.7ms                   | 62.9±0.4ms                |    1    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                             |
|          | 92.7±3ns                     | 89.2±1ns                  |    0.96 | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                           |
|          | 520±5ms                      | 520±3ms                   |    1    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                            |
|          | 28±0.07k                     | 28.4±0.09k                |    1.01 | save.NetcdfSave.tracemalloc_netcdf_save(50, False)                                          |
|          | 1.72±0.1M                    | 1.64±0.1M                 |    0.96 | save.NetcdfSave.tracemalloc_netcdf_save(50, True)                                           |
|          | 28±0.06k                     | 28.4±0.06k                |    1.01 | save.NetcdfSave.tracemalloc_netcdf_save(600, False)                                         |
|          | 208±20M                      | 208±20M                   |    1    | save.NetcdfSave.tracemalloc_netcdf_save(600, True)                                          |
|          | 48.6±1ms                     | 42.2±0.4ms                |    0.87 | stats.PearsonR.time_lazy                                                                    |
|          | 18.4±0.01M                   | 18.4±0.01M                |    1    | stats.PearsonR.tracemalloc_real                                                             |
|          | 68.7±0.7ms                   | 61.1±0.5ms                |    0.89 | trajectory.TrajectoryInterpolation.time_trajectory_nearest                                  |
|          | 23.3±0.01M                   | 23.3±0.01M                |    1    | trajectory.TrajectoryInterpolation.tracemalloc_trajectory_linear                            |
|          | 12.1±0.05M                   | 12.1±0.05M                |    1    | trajectory.TrajectoryInterpolation.tracemalloc_trajectory_nearest                           |

Benchmarks that have got worse:

| Change   | Before [dd0432e4] <main~1>   | After [b5bdaffc] <main>   |   Ratio | Benchmark (Parameter)                   |
|----------|------------------------------|---------------------------|---------|-----------------------------------------|
| +        | 1.06±0.01ms                  | 1.54±0.01ms               |    1.45 | import_iris.Iris.time_third_party_numpy |
| +        | 20±0.07M                     | 24.4±0.7M                 |    1.22 | stats.PearsonR.tracemalloc_lazy         |

Generated by GHA run 11508762926

[trexfeathers]

Expected