SciTools/iris

Performance Shift(s): `a045c81a`

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Benchmark comparison has identified performance shifts at:

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

⏱️ Performance Benchmark Report: a045c81

Performance shifts
| Change   | Before [13017e3f] <main~3>   | After [a045c81a] <main~2>   |   Ratio | Benchmark (Parameter)                            |
|----------|------------------------------|-----------------------------|---------|--------------------------------------------------|
| -        | 2.90±0.02s                   | 410±4ms                     |    0.14 | merge_concat.Concatenate.time_concatenate(False) |
| -        | 2.91±0.02s                   | 408±2ms                     |    0.14 | merge_concat.Concatenate.time_concatenate(True)  |
| Change   | Before [13017e3f] <main~3>   | After [a045c81a] <main~2>   |   Ratio | Benchmark (Parameter)                                   |
|----------|------------------------------|-----------------------------|---------|---------------------------------------------------------|
| +        | 26.7±6M                      | 109±0.5M                    |    4.09 | merge_concat.Concatenate.tracemalloc_concatenate(False) |
| +        | 26.7±6M                      | 109±0.6M                    |    4.09 | merge_concat.Concatenate.tracemalloc_concatenate(True)  |
Full benchmark results

Benchmarks that have improved:

| Change   | Before [13017e3f] <main~3>   | After [a045c81a] <main~2>   |   Ratio | Benchmark (Parameter)                            |
|----------|------------------------------|-----------------------------|---------|--------------------------------------------------|
| -        | 2.90±0.02s                   | 410±4ms                     |    0.14 | merge_concat.Concatenate.time_concatenate(False) |
| -        | 2.91±0.02s                   | 408±2ms                     |    0.14 | merge_concat.Concatenate.time_concatenate(True)  |

Benchmarks that have stayed the same:

| Change   | Before [13017e3f] <main~3>   | After [a045c81a] <main~2>   |   Ratio | Benchmark (Parameter)                                                                       |
|----------|------------------------------|-----------------------------|---------|---------------------------------------------------------------------------------------------|
|          | 56.9±0.6ms                   | 56.8±0.6ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_COUNT(False)                              |
|          | 58.4±1ms                     | 57.3±0.5ms                  |    0.98 | aggregate_collapse.Aggregation.time_aggregated_by_COUNT(True)                               |
|          | 206±2ms                      | 206±2ms                     |    1    | aggregate_collapse.Aggregation.time_aggregated_by_FAST_PERCENTILE(False)                    |
|          | 208±2ms                      | 206±1ms                     |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_FAST_PERCENTILE(True)                     |
|          | 39.5±0.2ms                   | 39.4±0.1ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_GMEAN(False)                              |
|          | 40.1±0.4ms                   | 40.1±0.3ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_GMEAN(True)                               |
|          | 39.9±0.8ms                   | 39.5±0.3ms                  |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_HMEAN(False)                              |
|          | 40.2±0.4ms                   | 40.2±0.3ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_HMEAN(True)                               |
|          | 49.6±0.7ms                   | 50.0±0.5ms                  |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_MAX(False)                                |
|          | 50.1±0.5ms                   | 50.5±0.7ms                  |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_MAX(True)                                 |
|          | 126±0.7ms                    | 126±1ms                     |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_MAX_RUN(False)                            |
|          | 127±0.5ms                    | 127±1ms                     |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_MAX_RUN(True)                             |
|          | 54.3±1ms                     | 54.4±1ms                    |    1    | aggregate_collapse.Aggregation.time_aggregated_by_MEAN(False)                               |
|          | 55.1±0.9ms                   | 55.1±0.7ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_MEAN(True)                                |
|          | 39.7±0.5ms                   | 39.2±0.2ms                  |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_MEDIAN(False)                             |
|          | 40.7±0.5ms                   | 40.1±0.4ms                  |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_MEDIAN(True)                              |
|          | 50.0±0.4ms                   | 49.3±0.5ms                  |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_MIN(False)                                |
|          | 50.1±0.6ms                   | 50.4±0.4ms                  |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_MIN(True)                                 |
|          | 1.33±0.01s                   | 1.34±0.01s                  |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(False)                               |
|          | 1.34±0.02s                   | 1.33±0.01s                  |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(True)                                |
|          | 699±10ms                     | 708±9ms                     |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(False)                         |
|          | 701±10ms                     | 711±10ms                    |    1.01 | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(True)                          |
|          | 38.0±0.4ms                   | 38.0±0.3ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_PROPORTION(False)                         |
|          | 38.4±0.3ms                   | 38.3±0.3ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_PROPORTION(True)                          |
|          | 65.9±1ms                     | 66.1±0.5ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_RMS(False)                                |
|          | 66.3±0.8ms                   | 65.9±0.6ms                  |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_RMS(True)                                 |
|          | 70.4±0.6ms                   | 69.5±0.3ms                  |    0.99 | aggregate_collapse.Aggregation.time_aggregated_by_STD_DEV(False)                            |
|          | 70.2±0.9ms                   | 70.4±0.9ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_STD_DEV(True)                             |
|          | 64.5±0.5ms                   | 64.4±0.6ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_VARIANCE(False)                           |
|          | 65.3±0.6ms                   | 65.4±0.9ms                  |    1    | aggregate_collapse.Aggregation.time_aggregated_by_VARIANCE(True)                            |
|          | 21.8±0.4ms                   | 21.7±0.2ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(False)                               |
|          | 25.4±0.5ms                   | 25.3±0.3ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(True)                                |
|          | 149±3ms                      | 148±1ms                     |    1    | aggregate_collapse.Aggregation.time_collapsed_by_FAST_PERCENTILE(False)                     |
|          | 162±2ms                      | 160±2ms                     |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_FAST_PERCENTILE(True)                      |
|          | 19.9±0.2ms                   | 19.8±0.2ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(False)                               |
|          | 23.9±0.5ms                   | 23.9±0.2ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(True)                                |
|          | 20.1±0.4ms                   | 20.0±0.4ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(False)                               |
|          | 23.7±0.2ms                   | 23.8±0.3ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(True)                                |
|          | 20.4±0.1ms                   | 20.6±0.3ms                  |    1.01 | aggregate_collapse.Aggregation.time_collapsed_by_MAX(False)                                 |
|          | 24.2±0.2ms                   | 24.3±0.2ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_MAX(True)                                  |
|          | 37.2±0.7ms                   | 36.9±1ms                    |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_MAX_RUN(False)                             |
|          | 41.4±0.7ms                   | 40.8±1ms                    |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_MAX_RUN(True)                              |
|          | 20.9±0.4ms                   | 20.8±0.2ms                  |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(False)                                |
|          | 24.9±0.6ms                   | 24.4±0.4ms                  |    0.98 | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(True)                                 |
|          | 20.3±0.5ms                   | 20.5±0.2ms                  |    1.01 | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(False)                              |
|          | 24.5±0.6ms                   | 24.4±0.4ms                  |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(True)                               |
|          | 20.4±0.3ms                   | 20.4±0.2ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_MIN(False)                                 |
|          | 24.3±0.3ms                   | 24.3±0.3ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_MIN(True)                                  |
|          | 555±5ms                      | 554±2ms                     |    1    | aggregate_collapse.Aggregation.time_collapsed_by_PEAK(False)                                |
|          | 569±3ms                      | 557±2ms                     |    0.98 | aggregate_collapse.Aggregation.time_collapsed_by_PEAK(True)                                 |
|          | 171±2ms                      | 169±0.9ms                   |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_PERCENTILE(False)                          |
|          | 183±1ms                      | 182±1ms                     |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_PERCENTILE(True)                           |
|          | 19.6±0.3ms                   | 19.5±0.2ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(False)                          |
|          | 23.5±0.3ms                   | 23.6±0.3ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(True)                           |
|          | 23.2±0.4ms                   | 22.9±0.2ms                  |    0.99 | aggregate_collapse.Aggregation.time_collapsed_by_RMS(False)                                 |
|          | 27.1±0.6ms                   | 26.6±0.3ms                  |    0.98 | aggregate_collapse.Aggregation.time_collapsed_by_RMS(True)                                  |
|          | 23.0±0.1ms                   | 23.0±0.7ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(False)                             |
|          | 26.9±0.2ms                   | 26.9±0.3ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(True)                              |
|          | 22.5±0.5ms                   | 22.4±0.2ms                  |    1    | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(False)                            |
|          | 26.6±0.6ms                   | 26.2±0.4ms                  |    0.98 | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(True)                             |
|          | 87.5±0.6ms                   | 88.3±2ms                    |    1.01 | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_MEAN(False)                     |
|          | 88.1±1ms                     | 88.1±0.9ms                  |    1    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_MEAN(True)                      |
|          | 101±1ms                      | 99.8±0.9ms                  |    0.98 | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_RMS(False)                      |
|          | 101±1ms                      | 100±0.9ms                   |    1    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_RMS(True)                       |
|          | 61.9±2ms                     | 61.8±0.6ms                  |    1    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_SUM(False)                      |
|          | 62.9±0.7ms                   | 62.3±1ms                    |    0.99 | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_SUM(True)                       |
|          | 31.7±0.7ms                   | 31.6±0.5ms                  |    1    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_MEAN(False)                      |
|          | 35.7±0.7ms                   | 35.4±0.3ms                  |    0.99 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_MEAN(True)                       |
|          | 34.1±0.7ms                   | 34.1±0.4ms                  |    1    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_RMS(False)                       |
|          | 37.7±0.7ms                   | 37.3±0.3ms                  |    0.99 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_RMS(True)                        |
|          | 28.6±0.4ms                   | 28.4±0.2ms                  |    0.99 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_SUM(False)                       |
|          | 32.4±0.2ms                   | 32.1±0.5ms                  |    0.99 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_SUM(True)                        |
|          | 344±3ms                      | 338±2ms                     |    0.98 | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_WPERCENTILE(False)               |
|          | 361±3ms                      | 360±3ms                     |    1    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_WPERCENTILE(True)                |
|          | 1.12±0.01ms                  | 1.13±0.03ms                 |    1.01 | cube.CubeCreation.time_create(False, 'construct')                                           |
|          | 398±5μs                      | 407±5μs                     |    1.02 | cube.CubeCreation.time_create(False, 'instantiate')                                         |
|          | 961±20μs                     | 958±10μs                    |    1    | cube.CubeCreation.time_create(True, 'construct')                                            |
|          | 579±7μs                      | 586±8μs                     |    1.01 | cube.CubeCreation.time_create(True, 'instantiate')                                          |
|          | 240±2ms                      | 241±4ms                     |    1.01 | cube.CubeEquality.time_equality(False, False, 'all_equal')                                  |
|          | 122±2ms                      | 121±1ms                     |    0.99 | cube.CubeEquality.time_equality(False, False, 'coord_inequality')                           |
|          | 253±5ms                      | 252±3ms                     |    1    | cube.CubeEquality.time_equality(False, False, 'data_inequality')                            |
|          | 16.5±0.1μs                   | 16.9±0.2μs                  |    1.02 | cube.CubeEquality.time_equality(False, False, 'metadata_inequality')                        |
|          | 336±3ms                      | 336±5ms                     |    1    | cube.CubeEquality.time_equality(False, True, 'all_equal')                                   |
|          | 220±2ms                      | 219±1ms                     |    1    | cube.CubeEquality.time_equality(False, True, 'coord_inequality')                            |
|          | 347±3ms                      | 348±2ms                     |    1    | cube.CubeEquality.time_equality(False, True, 'data_inequality')                             |
|          | 16.8±0.2μs                   | 16.8±0.2μs                  |    1    | cube.CubeEquality.time_equality(False, True, 'metadata_inequality')                         |
|          | 241±4ms                      | 240±3ms                     |    0.99 | cube.CubeEquality.time_equality(True, False, 'all_equal')                                   |
|          | 122±2ms                      | 121±1ms                     |    1    | cube.CubeEquality.time_equality(True, False, 'coord_inequality')                            |
|          | 251±1ms                      | 250±2ms                     |    1    | cube.CubeEquality.time_equality(True, False, 'data_inequality')                             |
|          | 53.2±0.7μs                   | 53.5±0.5μs                  |    1.01 | cube.CubeEquality.time_equality(True, False, 'metadata_inequality')                         |
|          | 335±5ms                      | 340±3ms                     |    1.02 | cube.CubeEquality.time_equality(True, True, 'all_equal')                                    |
|          | 221±2ms                      | 220±1ms                     |    0.99 | cube.CubeEquality.time_equality(True, True, 'coord_inequality')                             |
|          | 351±4ms                      | 347±2ms                     |    0.99 | cube.CubeEquality.time_equality(True, True, 'data_inequality')                              |
|          | 54.9±0.8μs                   | 55.1±0.7μs                  |    1    | cube.CubeEquality.time_equality(True, True, 'metadata_inequality')                          |
|          | 692±8μs                      | 823±8μs                     |    1.19 | import_iris.Iris.time__concatenate                                                          |
|          | 202±4μs                      | 199±4μs                     |    0.99 | import_iris.Iris.time__constraints                                                          |
|          | 118±1μs                      | 119±0.9μs                   |    1.01 | import_iris.Iris.time__data_manager                                                         |
|          | 97.0±0.8μs                   | 98.1±0.8μs                  |    1.01 | import_iris.Iris.time__deprecation                                                          |
|          | 140±1μs                      | 142±2μs                     |    1.01 | import_iris.Iris.time__lazy_data                                                            |
|          | 934±6μs                      | 934±7μs                     |    1    | import_iris.Iris.time__merge                                                                |
|          | 79.3±0.8μs                   | 79.1±0.3μs                  |    1    | import_iris.Iris.time__representation                                                       |
|          | 532±10μs                     | 524±6μs                     |    0.98 | import_iris.Iris.time_analysis                                                              |
|          | 147±2μs                      | 145±2μs                     |    0.98 | import_iris.Iris.time_analysis__area_weighted                                               |
|          | 111±1μs                      | 111±2μs                     |    1    | import_iris.Iris.time_analysis__grid_angles                                                 |
|          | 258±4μs                      | 253±3μs                     |    0.98 | import_iris.Iris.time_analysis__interpolation                                               |
|          | 198±2μs                      | 199±2μs                     |    1    | import_iris.Iris.time_analysis__regrid                                                      |
|          | 116±1μs                      | 117±1μs                     |    1.01 | import_iris.Iris.time_analysis__scipy_interpolate                                           |
|          | 143±2μs                      | 144±2μs                     |    1.01 | import_iris.Iris.time_analysis_calculus                                                     |
|          | 335±4μs                      | 337±3μs                     |    1.01 | import_iris.Iris.time_analysis_cartography                                                  |
|          | 95.8±0.7μs                   | 97.2±0.6μs                  |    1.01 | import_iris.Iris.time_analysis_geomerty                                                     |
|          | 224±3μs                      | 228±4μs                     |    1.02 | import_iris.Iris.time_analysis_maths                                                        |
|          | 99.3±0.5μs                   | 102±2μs                     |    1.02 | import_iris.Iris.time_analysis_stats                                                        |
|          | 183±4μs                      | 185±2μs                     |    1.01 | import_iris.Iris.time_analysis_trajectory                                                   |
|          | 340±6μs                      | 344±10μs                    |    1.01 | import_iris.Iris.time_aux_factory                                                           |
|          | 85.5±0.8μs                   | 87.1±0.8μs                  |    1.02 | import_iris.Iris.time_common                                                                |
|          | 174±3μs                      | 177±5μs                     |    1.02 | import_iris.Iris.time_common_lenient                                                        |
|          | 1.43±0.02ms                  | 1.41±0.02ms                 |    0.99 | import_iris.Iris.time_common_metadata                                                       |
|          | 143±2μs                      | 141±1μs                     |    0.99 | import_iris.Iris.time_common_mixin                                                          |
|          | 1.23±0.02ms                  | 1.26±0.01ms                 |    1.02 | import_iris.Iris.time_common_resolve                                                        |
|          | 208±3μs                      | 208±2μs                     |    1    | import_iris.Iris.time_config                                                                |
|          | 127±2μs                      | 129±2μs                     |    1.01 | import_iris.Iris.time_coord_categorisation                                                  |
|          | 427±10μs                     | 420±10μs                    |    0.98 | import_iris.Iris.time_coord_systems                                                         |
|          | 824±40μs                     | 840±20μs                    |    1.02 | import_iris.Iris.time_coords                                                                |
|          | 835±30μs                     | 804±20μs                    |    0.96 | import_iris.Iris.time_cube                                                                  |
|          | 234±6μs                      | 238±3μs                     |    1.02 | import_iris.Iris.time_exceptions                                                            |
|          | 78.2±0.5μs                   | 80.3±1μs                    |    1.03 | import_iris.Iris.time_experimental                                                          |
|          | 187±2μs                      | 191±2μs                     |    1.02 | import_iris.Iris.time_fileformats                                                           |
|          | 272±7μs                      | 274±4μs                     |    1.01 | import_iris.Iris.time_fileformats__ff                                                       |
|          | 3.13±0.07ms                  | 2.93±0.1ms                  |    0.94 | import_iris.Iris.time_fileformats__ff_cross_references                                      |
|          | 81.3±1μs                     | 81.9±0.4μs                  |    1.01 | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                          |
|          | 119±2μs                      | 119±1μs                     |    1    | import_iris.Iris.time_fileformats_abf                                                       |
|          | 457±10μs                     | 459±7μs                     |    1    | import_iris.Iris.time_fileformats_cf                                                        |
|          | 6.33±0.2ms                   | 6.35±0.07ms                 |    1    | import_iris.Iris.time_fileformats_dot                                                       |
|          | 75.7±0.4μs                   | 76.8±0.9μs                  |    1.01 | import_iris.Iris.time_fileformats_name                                                      |
|          | 264±4μs                      | 264±3μs                     |    1    | import_iris.Iris.time_fileformats_name_loaders                                              |
|          | 120±1μs                      | 122±1μs                     |    1.01 | import_iris.Iris.time_fileformats_netcdf                                                    |
|          | 128±3μs                      | 127±1μs                     |    1    | import_iris.Iris.time_fileformats_nimrod                                                    |
|          | 215±4μs                      | 217±5μs                     |    1.01 | import_iris.Iris.time_fileformats_nimrod_load_rules                                         |
|          | 859±20μs                     | 841±20μs                    |    0.98 | import_iris.Iris.time_fileformats_pp                                                        |
|          | 184±1μs                      | 186±3μs                     |    1.01 | import_iris.Iris.time_fileformats_pp_load_rules                                             |
|          | 138±2μs                      | 137±3μs                     |    0.99 | import_iris.Iris.time_fileformats_pp_save_rules                                             |
|          | 530±7μs                      | 526±4μs                     |    0.99 | import_iris.Iris.time_fileformats_rules                                                     |
|          | 233±3μs                      | 233±4μs                     |    1    | import_iris.Iris.time_fileformats_structured_array_identification                           |
|          | 84.5±0.6μs                   | 85.5±0.8μs                  |    1.01 | import_iris.Iris.time_fileformats_um                                                        |
|          | 165±3μs                      | 166±2μs                     |    1.01 | import_iris.Iris.time_fileformats_um__fast_load                                             |
|          | 144±3μs                      | 145±2μs                     |    1.01 | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                           |
|          | 76.8±0.4μs                   | 78.2±0.8μs                  |    1.02 | import_iris.Iris.time_fileformats_um__ff_replacement                                        |
|          | 83.8±1μs                     | 85.0±2μs                    |    1.01 | import_iris.Iris.time_fileformats_um__optimal_array_structuring                             |
|          | 1.01±0.01ms                  | 1.00±0.01ms                 |    1    | import_iris.Iris.time_fileformats_um_cf_map                                                 |
|          | 140±0.7μs                    | 142±4μs                     |    1.02 | import_iris.Iris.time_io                                                                    |
|          | 188±2μs                      | 187±2μs                     |    1    | import_iris.Iris.time_io_format_picker                                                      |
|          | 240±6μs                      | 238±2μs                     |    0.99 | import_iris.Iris.time_iris                                                                  |
|          | 132±1μs                      | 134±2μs                     |    1.01 | import_iris.Iris.time_iterate                                                               |
|          | 8.90±0.2ms                   | 8.82±0.06ms                 |    0.99 | import_iris.Iris.time_palette                                                               |
|          | 2.31±0.07ms                  | 2.29±0.06ms                 |    0.99 | import_iris.Iris.time_plot                                                                  |
|          | 107±0.7μs                    | 108±1μs                     |    1.01 | import_iris.Iris.time_quickplot                                                             |
|          | 2.50±0.1ms                   | 2.63±0.08ms                 |    1.05 | import_iris.Iris.time_std_names                                                             |
|          | 1.80±0.03ms                  | 1.81±0.01ms                 |    1    | import_iris.Iris.time_symbols                                                               |
|          | 334±20ms                     | 335±20ms                    |    1    | import_iris.Iris.time_tests                                                                 |
|          | 261±3μs                      | 260±3μs                     |    1    | import_iris.Iris.time_third_party_cartopy                                                   |
|          | 5.08±0.1ms                   | 5.09±0.05ms                 |    1    | import_iris.Iris.time_third_party_cf_units                                                  |
|          | 121±0.5μs                    | 122±0.6μs                   |    1.01 | import_iris.Iris.time_third_party_cftime                                                    |
|          | 2.89±0.07ms                  | 2.89±0.02ms                 |    1    | import_iris.Iris.time_third_party_matplotlib                                                |
|          | 1.08±0.01ms                  | 1.09±0ms                    |    1    | import_iris.Iris.time_third_party_numpy                                                     |
|          | 175±3μs                      | 176±2μs                     |    1.01 | import_iris.Iris.time_third_party_scipy                                                     |
|          | 104±1μs                      | 105±0.8μs                   |    1.01 | import_iris.Iris.time_time                                                                  |
|          | 330±3μs                      | 331±3μs                     |    1    | import_iris.Iris.time_util                                                                  |
|          | 74.5±0.9μs                   | 75.0±2μs                    |    1.01 | iterate.IZip.time_izip                                                                      |
|          | 8.55±0.1ms                   | 8.65±0.1ms                  |    1.01 | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                  |
|          | 26.4±0.7ms                   | 27.0±0.5ms                  |    1.02 | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                              |
|          | 9.40±0.2ms                   | 9.22±0.06ms                 |    0.98 | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                  |
|          | 8.65±0.2ms                   | 8.49±0.07ms                 |    0.98 | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                   |
|          | 23.3±0.2ms                   | 23.2±0.3ms                  |    0.99 | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                               |
|          | 9.34±0.3ms                   | 9.17±0.09ms                 |    0.98 | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                   |
|          | 1.39±0.01s                   | 1.41±0.01s                  |    1.01 | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                    |
|          | 23.3±0.3ms                   | 23.2±0.2ms                  |    1    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                |
|          | 1.57±0.01s                   | 1.56±0.01s                  |    0.99 | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                    |
|          | 1.40±0.01s                   | 1.39±0.01s                  |    0.99 | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                     |
|          | 23.0±0.3ms                   | 23.3±0.2ms                  |    1.01 | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                 |
|          | 1.56±0.01s                   | 1.56±0.01s                  |    1    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                     |
|          | 4.11±0.08ms                  | 4.05±0.04ms                 |    0.99 | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                     |
|          | 21.9±0.2ms                   | 22.0±0.3ms                  |    1    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                 |
|          | 4.36±0.06ms                  | 4.29±0.02ms                 |    0.98 | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                     |
|          | 4.04±0.05ms                  | 4.02±0.06ms                 |    0.99 | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                      |
|          | 22.0±0.2ms                   | 21.8±0.3ms                  |    0.99 | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                  |
|          | 4.43±0.1ms                   | 4.35±0.09ms                 |    0.98 | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                      |
|          | 34.4±3ms                     | 34.4±3ms                    |    1    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                               |
|          | 21.1±0.2ms                   | 20.7±0.3ms                  |    0.98 | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                           |
|          | 14.5±2ms                     | 14.4±2ms                    |    1    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                               |
|          | 26.3±0.8ms                   | 26.4±3ms                    |    1    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                |
|          | 71.2±2ms                     | 71.3±2ms                    |    1    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                            |
|          | 26.6±2ms                     | 26.7±2ms                    |    1    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                |
|          | 468±3ms                      | 469±4ms                     |    1    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                 |
|          | 3.35±0.08ms                  | 3.40±0.09ms                 |    1.01 | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                             |
|          | 472±1ms                      | 476±2ms                     |    1.01 | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                 |
|          | 475±3ms                      | 474±5ms                     |    1    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                  |
|          | 3.41±0.08ms                  | 3.47±0.1ms                  |    1.02 | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                              |
|          | 479±4ms                      | 478±5ms                     |    1    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                  |
|          | 1.72±0.1ms                   | 1.64±0.07ms                 |    0.95 | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                  |
|          | 3.44±0.05ms                  | 3.38±0.1ms                  |    0.98 | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                              |
|          | 1.76±0.1ms                   | 1.74±0.1ms                  |    0.99 | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                  |
|          | 1.77±0.2ms                   | 1.66±0.09ms                 |    0.94 | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                   |
|          | 3.45±0.08ms                  | 3.43±0.1ms                  |    0.99 | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                               |
|          | 1.76±0.07ms                  | 1.73±0.2ms                  |    0.99 | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                   |
|          | 372±5ms                      | 375±5ms                     |    1.01 | load.ManyVars.time_many_var_load                                                            |
|          | 8.51±0.06ms                  | 8.59±0.1ms                  |    1.01 | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                            |
|          | 9.41±0.07ms                  | 9.36±0.2ms                  |    0.99 | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                            |
|          | 1.42±0.01s                   | 1.41±0.01s                  |    0.99 | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                              |
|          | 1.58±0.01s                   | 1.57±0.01s                  |    0.99 | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                              |
|          | 4.05±0.05ms                  | 4.06±0.03ms                 |    1    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                 |
|          | 4.50±0.1ms                   | 4.42±0.05ms                 |    0.98 | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                 |
|          | 8.57±0.1ms                   | 8.36±0.09ms                 |    0.98 | load.StructuredFF.time_structured_load((1280, 960, 5), False)                               |
|          | 4.98±0.1ms                   | 5.30±0.06ms                 |    1.06 | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                |
|          | 1.39±0.01s                   | 1.38±0.01s                  |    0.99 | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                 |
|          | 380±7ms                      | 385±4ms                     |    1.01 | load.StructuredFF.time_structured_load((2, 2, 1000), True)                                  |
|          | 4.04±0.02ms                  | 4.10±0.07ms                 |    1.02 | load.StructuredFF.time_structured_load((2, 2, 2), False)                                    |
|          | 3.65±0.04ms                  | 3.97±0.03ms                 |    1.09 | load.StructuredFF.time_structured_load((2, 2, 2), True)                                     |
|          | 152±0.5ms                    | 152±2ms                     |    1    | load.TimeConstraint.time_time_constraint(20, 'FF')                                          |
|          | 26.0±0.2ms                   | 25.5±0.3ms                  |    0.98 | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                      |
|          | 169±0.7ms                    | 171±2ms                     |    1.01 | load.TimeConstraint.time_time_constraint(20, 'PP')                                          |
|          | 31.3±0.7ms                   | 30.4±0.2ms                  |    0.97 | load.TimeConstraint.time_time_constraint(3, 'FF')                                           |
|          | 25.3±0.2ms                   | 25.4±0.3ms                  |    1    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                       |
|          | 32.9±0.4ms                   | 33.3±0.3ms                  |    1.01 | load.TimeConstraint.time_time_constraint(3, 'PP')                                           |
|          | 19.4±0.5ms                   | 19.6±0.2ms                  |    1.01 | load.ugrid.BasicLoading.time_load_file(1)                                                   |
|          | 43.5±1ms                     | 45.0±0.3ms                  |    1.03 | load.ugrid.BasicLoading.time_load_file(200000)                                              |
|          | 16.2±0.3ms                   | 16.1±0.4ms                  |    1    | load.ugrid.BasicLoading.time_load_mesh(1)                                                   |
|          | 25.1±0.2ms                   | 24.7±0.3ms                  |    0.99 | load.ugrid.BasicLoading.time_load_mesh(200000)                                              |
|          | 20.1±0.4ms                   | 19.8±0.3ms                  |    0.99 | load.ugrid.BasicLoadingTime.time_load_file(1)                                               |
|          | 22.3±0.6ms                   | 22.2±0.5ms                  |    0.99 | load.ugrid.BasicLoadingTime.time_load_file(200000)                                          |
|          | 16.0±0.3ms                   | 16.2±0.2ms                  |    1.02 | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                               |
|          | 19.2±0.2ms                   | 19.2±0.5ms                  |    1    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                          |
|          | 20.8±0.4ms                   | 20.7±0.3ms                  |    1    | load.ugrid.Callback.time_load_file_callback(1)                                              |
|          | 54.3±1ms                     | 53.3±0.7ms                  |    0.98 | load.ugrid.Callback.time_load_file_callback(200000)                                         |
|          | 20.7±0.3ms                   | 21.0±0.4ms                  |    1.01 | load.ugrid.CallbackTime.time_load_file_callback(1)                                          |
|          | 24.4±0.3ms                   | 24.6±0.5ms                  |    1.01 | load.ugrid.CallbackTime.time_load_file_callback(200000)                                     |
|          | 3.34±0.06ms                  | 3.38±0.06ms                 |    1.01 | load.ugrid.DataRealisation.time_realise_data(10000)                                         |
|          | 6.20±0.09ms                  | 6.12±0.07ms                 |    0.99 | load.ugrid.DataRealisation.time_realise_data(200000)                                        |
|          | 43.7±0.6ms                   | 43.4±0.7ms                  |    0.99 | load.ugrid.DataRealisationTime.time_realise_data(10000)                                     |
|          | 846±6ms                      | 844±7ms                     |    1    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                    |
|          | 55.1±1ms                     | 54.9±0.4ms                  |    1    | merge_concat.Merge.time_merge                                                               |
|          | 1.2±0.3M                     | 1.2±0.3M                    |    1    | merge_concat.Merge.tracemalloc_merge                                                        |
|          | 401±4ns                      | 398±6ns                     |    0.99 | mesh.utils.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)              |
|          | 258±2ms                      | 258±1ms                     |    1    | mesh.utils.regions_combine.CombineRegionsComputeRealData.time_compute_data(500)             |
|          | 647±2k                       | 648±2k                      |    1    | mesh.utils.regions_combine.CombineRegionsComputeRealData.tracemalloc_compute_data(50)       |
|          | 60±0M                        | 60±0M                       |    1    | mesh.utils.regions_combine.CombineRegionsComputeRealData.tracemalloc_compute_data(500)      |
|          | 15.1±0.2ms                   | 15.0±0.2ms                  |    0.99 | mesh.utils.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)           |
|          | 16.8±0.3ms                   | 16.7±0.5ms                  |    0.99 | mesh.utils.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)          |
|          | 529±90k                      | 529±90k                     |    1    | mesh.utils.regions_combine.CombineRegionsCreateCube.tracemalloc_create_combined_cube(50)    |
|          | 12.4±0.09M                   | 12.4±0.09M                  |    1    | mesh.utils.regions_combine.CombineRegionsCreateCube.tracemalloc_create_combined_cube(500)   |
|          | 116±1ms                      | 117±1ms                     |    1.01 | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)         |
|          | 731±7ms                      | 729±5ms                     |    1    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)        |
|          | 1.23±0.04M                   | 1.22±0.06M                  |    0.99 | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.tracemalloc_stream_file2file(50)  |
|          | 96.3±0.05M                   | 96.3±0.03M                  |    1    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.tracemalloc_stream_file2file(500) |
|          | 72.6±0.5ms                   | 73.1±1ms                    |    1.01 | mesh.utils.regions_combine.CombineRegionsSaveData.time_save(50)                             |
|          | 676±4ms                      | 677±5ms                     |    1    | mesh.utils.regions_combine.CombineRegionsSaveData.time_save(500)                            |
|          | 1.15±0.02M                   | 1.15±0.01M                  |    1    | mesh.utils.regions_combine.CombineRegionsSaveData.tracemalloc_save(50)                      |
|          | 96.2±0.02M                   | 96.2±0.02M                  |    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)                 |
|          | 7.13±0.2ms                   | 6.93±0.1ms                  |    0.97 | plot.AuxSort.time_aux_sort                                                                  |
|          | 83.4±6ms                     | 83.5±5ms                    |    1    | regridding.CurvilinearRegridding.time_regrid_pic                                            |
|          | 136±3M                       | 136±3M                      |    1    | regridding.CurvilinearRegridding.tracemalloc_regrid_pic                                     |
|          | 101±0.6ms                    | 99.9±0.7ms                  |    0.99 | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                   |
|          | 53.2±1ms                     | 53.1±2ms                    |    1    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                          |
|          | 106±0.06M                    | 106±0.06M                   |    1    | regridding.HorizontalChunkedRegridding.tracemalloc_regrid_area_w                            |
|          | 147±0.6M                     | 147±0.6M                    |    1    | regridding.HorizontalChunkedRegridding.tracemalloc_regrid_area_w_new_grid                   |
|          | 4.82±0.1ms                   | 4.78±0.1ms                  |    0.99 | save.NetcdfSave.time_netcdf_save_cube(50, False)                                            |
|          | 80.3±0.8ms                   | 79.8±0.8ms                  |    0.99 | save.NetcdfSave.time_netcdf_save_cube(50, True)                                             |
|          | 54.7±0.9ms                   | 55.0±2ms                    |    1.01 | save.NetcdfSave.time_netcdf_save_cube(600, False)                                           |
|          | 584±3ms                      | 581±3ms                     |    1    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                            |
|          | 91.7±1ns                     | 90.1±0.4ns                  |    0.98 | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                            |
|          | 62.0±0.6ms                   | 61.8±0.5ms                  |    1    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                             |
|          | 90.9±0.8ns                   | 90.3±0.5ns                  |    0.99 | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                           |
|          | 513±2ms                      | 512±3ms                     |    1    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                            |
|          | 27.2±0.1k                    | 27.2±0.1k                   |    1    | save.NetcdfSave.tracemalloc_netcdf_save(50, False)                                          |
|          | 1.73±0.09M                   | 1.69±0.1M                   |    0.97 | save.NetcdfSave.tracemalloc_netcdf_save(50, True)                                           |
|          | 27.2±0.1k                    | 27.2±0.1k                   |    1    | save.NetcdfSave.tracemalloc_netcdf_save(600, False)                                         |
|          | 208±20M                      | 207±20M                     |    1    | save.NetcdfSave.tracemalloc_netcdf_save(600, True)                                          |
|          | 45.0±1ms                     | 44.5±1ms                    |    0.99 | stats.PearsonR.time_lazy                                                                    |
|          | 20.0±0.2ms                   | 19.8±0.3ms                  |    0.99 | stats.PearsonR.time_real                                                                    |
|          | 20±0.2M                      | 20±0.1M                     |    1    | stats.PearsonR.tracemalloc_lazy                                                             |
|          | 18.4±0.01M                   | 18.4±0.01M                  |    1    | stats.PearsonR.tracemalloc_real                                                             |
|          | 25.0±0.6ms                   | 25.5±1ms                    |    1.02 | trajectory.TrajectoryInterpolation.time_trajectory_linear                                   |
|          | 63.5±0.5ms                   | 62.7±0.4ms                  |    0.99 | 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 [13017e3f] <main~3>   | After [a045c81a] <main~2>   |   Ratio | Benchmark (Parameter)                                   |
|----------|------------------------------|-----------------------------|---------|---------------------------------------------------------|
| +        | 26.7±6M                      | 109±0.5M                    |    4.09 | merge_concat.Concatenate.tracemalloc_concatenate(False) |
| +        | 26.7±6M                      | 109±0.6M                    |    4.09 | merge_concat.Concatenate.tracemalloc_concatenate(True)  |

Generated by GHA run 10691977127