Performance Shift(s): d2fc1dba

[github-actions]

Benchmark comparison has identified performance shifts at:

• commit d2fc1db (Update lock files, pin Cartopy!=0.23 #6171).

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

⏱️ Performance Benchmark Report: d2fc1db

Performance shifts

| Change   | Before [cc60a605] <main~2>   | After [d2fc1dba] <main~1>   |   Ratio | Benchmark (Parameter)      |
|----------|------------------------------|-----------------------------|---------|----------------------------|
| -        | 2.23±0.04ms                  | 349±2μs                     |    0.16 | import_iris.Iris.time_plot |
| Change   | Before [cc60a605] <main~2>   | After [d2fc1dba] <main~1>   |   Ratio | Benchmark (Parameter)                                              |
|----------|------------------------------|-----------------------------|---------|--------------------------------------------------------------------|
| +        | 20.2±0.4ms                   | 26.1±0.09ms                 |    1.29 | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(False)      |
| +        | 24.8±0.4ms                   | 30.1±0.3ms                  |    1.21 | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(True)       |
| +        | 18.4±0.5ms                   | 24.0±0.3ms                  |    1.3  | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(False)      |
| +        | 22.9±0.6ms                   | 28.5±0.2ms                  |    1.25 | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(True)       |
| +        | 18.7±0.6ms                   | 24.0±0.3ms                  |    1.29 | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(False)      |
| +        | 22.8±0.7ms                   | 28.4±0.3ms                  |    1.25 | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(True)       |
| +        | 19.2±0.4ms                   | 24.7±0.3ms                  |    1.29 | aggregate_collapse.Aggregation.time_collapsed_by_MAX(False)        |
| +        | 23.3±0.5ms                   | 28.9±0.3ms                  |    1.24 | aggregate_collapse.Aggregation.time_collapsed_by_MAX(True)         |
| +        | 19.3±0.6ms                   | 25.4±0.2ms                  |    1.32 | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(False)       |
| +        | 23.9±0.6ms                   | 29.3±0.3ms                  |    1.23 | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(True)        |
| +        | 19.0±0.5ms                   | 24.4±0.5ms                  |    1.28 | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(False)     |
| +        | 23.2±0.7ms                   | 28.8±0.4ms                  |    1.24 | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(True)      |
| +        | 18.9±0.6ms                   | 24.8±0.2ms                  |    1.31 | aggregate_collapse.Aggregation.time_collapsed_by_MIN(False)        |
| +        | 23.2±0.6ms                   | 28.5±0.2ms                  |    1.23 | aggregate_collapse.Aggregation.time_collapsed_by_MIN(True)         |
| +        | 18.1±0.5ms                   | 23.8±0.2ms                  |    1.32 | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(False) |
| +        | 22.5±0.7ms                   | 28.3±0.4ms                  |    1.26 | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(True)  |
| +        | 22.2±0.4ms                   | 27.6±0.4ms                  |    1.25 | aggregate_collapse.Aggregation.time_collapsed_by_RMS(False)        |
| +        | 22.1±0.5ms                   | 27.4±0.4ms                  |    1.24 | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(False)    |
| +        | 26.4±0.5ms                   | 31.7±0.3ms                  |    1.2  | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(True)     |
| +        | 21.6±0.7ms                   | 26.9±0.5ms                  |    1.24 | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(False)   |
| +        | 25.5±0.6ms                   | 31.0±0.3ms                  |    1.22 | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(True)    |

Full benchmark results

Benchmarks that have improved:

| Change   | Before [cc60a605] <main~2>   | After [d2fc1dba] <main~1>   |   Ratio | Benchmark (Parameter)      |
|----------|------------------------------|-----------------------------|---------|----------------------------|
| -        | 2.23±0.04ms                  | 349±2μs                     |    0.16 | import_iris.Iris.time_plot |

Benchmarks that have stayed the same:

| Change   | Before [cc60a605] <main~2>   | After [d2fc1dba] <main~1>   | Ratio   | Benchmark (Parameter)                                                                       |
|----------|------------------------------|-----------------------------|---------|---------------------------------------------------------------------------------------------|
|          | 59.0±0.8ms                   | 60.0±0.7ms                  | 1.02    | aggregate_collapse.Aggregation.time_aggregated_by_COUNT(False)                              |
|          | 60.0±1ms                     | 61.4±1ms                    | 1.02    | aggregate_collapse.Aggregation.time_aggregated_by_COUNT(True)                               |
|          | 213±4ms                      | 219±3ms                     | 1.03    | aggregate_collapse.Aggregation.time_aggregated_by_FAST_PERCENTILE(False)                    |
|          | 211±5ms                      | 220±1ms                     | 1.04    | aggregate_collapse.Aggregation.time_aggregated_by_FAST_PERCENTILE(True)                     |
|          | 38.4±0.5ms                   | 38.6±0.3ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_GMEAN(False)                              |
|          | 39.1±1ms                     | 39.6±0.2ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_GMEAN(True)                               |
|          | 37.8±1ms                     | 39.2±0.2ms                  | 1.04    | aggregate_collapse.Aggregation.time_aggregated_by_HMEAN(False)                              |
|          | 39.5±1ms                     | 40.1±0.5ms                  | 1.02    | aggregate_collapse.Aggregation.time_aggregated_by_HMEAN(True)                               |
|          | 51.3±0.7ms                   | 51.6±0.8ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MAX(False)                                |
|          | 52.5±1ms                     | 52.5±0.7ms                  | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_MAX(True)                                 |
|          | 137±1ms                      | 137±2ms                     | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_MAX_RUN(False)                            |
|          | 135±2ms                      | 137±2ms                     | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MAX_RUN(True)                             |
|          | 56.2±0.8ms                   | 57.0±0.6ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MEAN(False)                               |
|          | 57.0±0.6ms                   | 57.5±0.7ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MEAN(True)                                |
|          | 38.2±0.8ms                   | 38.7±0.5ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MEDIAN(False)                             |
|          | 38.2±0.7ms                   | 39.8±0.5ms                  | 1.04    | aggregate_collapse.Aggregation.time_aggregated_by_MEDIAN(True)                              |
|          | 50.9±0.6ms                   | 52.0±0.6ms                  | 1.02    | aggregate_collapse.Aggregation.time_aggregated_by_MIN(False)                                |
|          | 51.2±0.8ms                   | 52.7±0.8ms                  | 1.03    | aggregate_collapse.Aggregation.time_aggregated_by_MIN(True)                                 |
|          | 1.36±0.01s                   | 1.36±0.02s                  | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(False)                               |
|          | 1.35±0.02s                   | 1.35±0.01s                  | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(True)                                |
|          | 695±3ms                      | 704±10ms                    | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(False)                         |
|          | 696±10ms                     | 701±10ms                    | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(True)                          |
|          | 36.5±0.5ms                   | 37.3±0.4ms                  | 1.02    | aggregate_collapse.Aggregation.time_aggregated_by_PROPORTION(False)                         |
|          | 37.9±0.7ms                   | 37.9±0.3ms                  | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_PROPORTION(True)                          |
|          | 68.6±0.8ms                   | 70.0±0.7ms                  | 1.02    | aggregate_collapse.Aggregation.time_aggregated_by_RMS(False)                                |
|          | 69.7±1ms                     | 70.2±0.9ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_RMS(True)                                 |
|          | 72.1±0.6ms                   | 72.3±1ms                    | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_STD_DEV(False)                            |
|          | 72.1±0.9ms                   | 72.9±0.8ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_STD_DEV(True)                             |
|          | 67.0±1ms                     | 67.4±0.6ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_VARIANCE(False)                           |
|          | 67.7±0.5ms                   | 67.6±1ms                    | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_VARIANCE(True)                            |
|          | 141±2ms                      | 152±1ms                     | 1.08    | aggregate_collapse.Aggregation.time_collapsed_by_FAST_PERCENTILE(False)                     |
|          | 156±2ms                      | 168±1ms                     | 1.07    | aggregate_collapse.Aggregation.time_collapsed_by_FAST_PERCENTILE(True)                      |
|          | 36.9±0.6ms                   | 38.3±0.7ms                  | 1.04    | aggregate_collapse.Aggregation.time_collapsed_by_MAX_RUN(False)                             |
|          | 41.2±0.7ms                   | 42.5±0.6ms                  | 1.03    | aggregate_collapse.Aggregation.time_collapsed_by_MAX_RUN(True)                              |
|          | 580±5ms                      | 584±5ms                     | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_PEAK(False)                                |
|          | 588±4ms                      | 586±5ms                     | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_PEAK(True)                                 |
|          | 159±3ms                      | 170±1ms                     | 1.07    | aggregate_collapse.Aggregation.time_collapsed_by_PERCENTILE(False)                          |
|          | 179±2ms                      | 189±1ms                     | 1.05    | aggregate_collapse.Aggregation.time_collapsed_by_PERCENTILE(True)                           |
|          | 26.7±1ms                     | 31.8±0.3ms                  | 1.19    | aggregate_collapse.Aggregation.time_collapsed_by_RMS(True)                                  |
|          | 94.1±0.7ms                   | 94.5±0.6ms                  | 1.00    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_MEAN(False)                     |
|          | 95.2±1ms                     | 96.8±1ms                    | 1.02    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_MEAN(True)                      |
|          | 108±1ms                      | 110±2ms                     | 1.02    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_RMS(False)                      |
|          | 109±1ms                      | 110±2ms                     | 1.01    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_RMS(True)                       |
|          | 63.7±0.6ms                   | 65.9±0.8ms                  | 1.03    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_SUM(False)                      |
|          | 64.4±0.8ms                   | 65.8±1ms                    | 1.02    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_SUM(True)                       |
|          | 30.4±0.5ms                   | 31.8±0.6ms                  | 1.05    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_MEAN(False)                      |
|          | 34.8±0.6ms                   | 36.0±0.7ms                  | 1.03    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_MEAN(True)                       |
|          | 33.3±0.6ms                   | 34.1±0.6ms                  | 1.02    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_RMS(False)                       |
|          | 37.0±1ms                     | 38.2±0.9ms                  | 1.03    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_RMS(True)                        |
|          | 26.1±0.4ms                   | 27.2±0.3ms                  | 1.04    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_SUM(False)                       |
|          | 30.3±0.6ms                   | 31.2±0.2ms                  | 1.03    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_SUM(True)                        |
|          | 336±6ms                      | 349±2ms                     | 1.04    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_WPERCENTILE(False)               |
|          | 359±5ms                      | 367±3ms                     | 1.02    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_WPERCENTILE(True)                |
|          | 1.13±0.01ms                  | 1.11±0.01ms                 | 0.98    | cube.CubeCreation.time_create(False, 'construct')                                           |
|          | 402±3μs                      | 401±7μs                     | 1.00    | cube.CubeCreation.time_create(False, 'instantiate')                                         |
|          | 946±10μs                     | 954±4μs                     | 1.01    | cube.CubeCreation.time_create(True, 'construct')                                            |
|          | 581±7μs                      | 573±6μs                     | 0.99    | cube.CubeCreation.time_create(True, 'instantiate')                                          |
|          | 239±5ms                      | 245±6ms                     | 1.02    | cube.CubeEquality.time_equality(False, False, 'all_equal')                                  |
|          | 122±2ms                      | 127±1ms                     | 1.04    | cube.CubeEquality.time_equality(False, False, 'coord_inequality')                           |
|          | 245±3ms                      | 257±2ms                     | 1.05    | cube.CubeEquality.time_equality(False, False, 'data_inequality')                            |
|          | 16.6±0.4μs                   | 16.8±0.2μs                  | 1.01    | cube.CubeEquality.time_equality(False, False, 'metadata_inequality')                        |
|          | 329±5ms                      | 345±5ms                     | 1.05    | cube.CubeEquality.time_equality(False, True, 'all_equal')                                   |
|          | 215±2ms                      | 232±3ms                     | 1.08    | cube.CubeEquality.time_equality(False, True, 'coord_inequality')                            |
|          | 337±2ms                      | 358±5ms                     | 1.06    | cube.CubeEquality.time_equality(False, True, 'data_inequality')                             |
|          | 16.9±0.3μs                   | 17.1±0.2μs                  | 1.01    | cube.CubeEquality.time_equality(False, True, 'metadata_inequality')                         |
|          | 236±4ms                      | 242±3ms                     | 1.03    | cube.CubeEquality.time_equality(True, False, 'all_equal')                                   |
|          | 122±2ms                      | 127±1ms                     | 1.04    | cube.CubeEquality.time_equality(True, False, 'coord_inequality')                            |
|          | 245±5ms                      | 255±5ms                     | 1.04    | cube.CubeEquality.time_equality(True, False, 'data_inequality')                             |
|          | 52.8±0.4μs                   | 53.6±0.4μs                  | 1.02    | cube.CubeEquality.time_equality(True, False, 'metadata_inequality')                         |
|          | 334±3ms                      | 349±5ms                     | 1.05    | cube.CubeEquality.time_equality(True, True, 'all_equal')                                    |
|          | 215±2ms                      | 231±2ms                     | 1.07    | cube.CubeEquality.time_equality(True, True, 'coord_inequality')                             |
|          | 337±4ms                      | 358±5ms                     | 1.06    | cube.CubeEquality.time_equality(True, True, 'data_inequality')                              |
|          | 54.9±0.6μs                   | 55.6±0.9μs                  | 1.01    | cube.CubeEquality.time_equality(True, True, 'metadata_inequality')                          |
|          | 798±9μs                      | 802±3μs                     | 1.00    | import_iris.Iris.time__concatenate                                                          |
|          | 184±2μs                      | 185±4μs                     | 1.00    | import_iris.Iris.time__constraints                                                          |
|          | 110±0.7μs                    | 112±2μs                     | 1.01    | import_iris.Iris.time__data_manager                                                         |
|          | 95.4±0.6μs                   | 94.7±0.5μs                  | 0.99    | import_iris.Iris.time__deprecation                                                          |
|          | 138±2μs                      | 137±0.8μs                   | 1.00    | import_iris.Iris.time__lazy_data                                                            |
|          | 928±10μs                     | 928±6μs                     | 1.00    | import_iris.Iris.time__merge                                                                |
|          | 77.7±0.4μs                   | 76.9±0.3μs                  | 0.99    | import_iris.Iris.time__representation                                                       |
|          | 595±4μs                      | 600±6μs                     | 1.01    | import_iris.Iris.time_analysis                                                              |
|          | 141±2μs                      | 140±1μs                     | 0.99    | import_iris.Iris.time_analysis__area_weighted                                               |
|          | 111±0.9μs                    | 111±0.9μs                   | 1.00    | import_iris.Iris.time_analysis__grid_angles                                                 |
|          | 253±5μs                      | 248±3μs                     | 0.98    | import_iris.Iris.time_analysis__interpolation                                               |
|          | 189±4μs                      | 189±4μs                     | 1.00    | import_iris.Iris.time_analysis__regrid                                                      |
|          | 113±0.9μs                    | 112±0.9μs                   | 0.99    | import_iris.Iris.time_analysis__scipy_interpolate                                           |
|          | 141±0.9μs                    | 143±1μs                     | 1.01    | import_iris.Iris.time_analysis_calculus                                                     |
|          | 336±3μs                      | 340±5μs                     | 1.01    | import_iris.Iris.time_analysis_cartography                                                  |
|          | 94.8±0.5μs                   | 96.1±2μs                    | 1.01    | import_iris.Iris.time_analysis_geomerty                                                     |
|          | 225±5μs                      | 224±3μs                     | 1.00    | import_iris.Iris.time_analysis_maths                                                        |
|          | 99.1±2μs                     | 98.6±0.3μs                  | 0.99    | import_iris.Iris.time_analysis_stats                                                        |
|          | 177±3μs                      | 177±2μs                     | 1.00    | import_iris.Iris.time_analysis_trajectory                                                   |
|          | 308±4μs                      | 312±9μs                     | 1.01    | import_iris.Iris.time_aux_factory                                                           |
|          | 84.8±1μs                     | 87.6±1μs                    | 1.03    | import_iris.Iris.time_common                                                                |
|          | 164±4μs                      | 164±1μs                     | 1.00    | import_iris.Iris.time_common_lenient                                                        |
|          | 1.37±0.03ms                  | 1.37±0.01ms                 | 1.00    | import_iris.Iris.time_common_metadata                                                       |
|          | 140±1μs                      | 139±1μs                     | 0.99    | import_iris.Iris.time_common_mixin                                                          |
|          | 1.20±0.01ms                  | 1.20±0.01ms                 | 1.01    | import_iris.Iris.time_common_resolve                                                        |
|          | 199±4μs                      | 202±3μs                     | 1.02    | import_iris.Iris.time_config                                                                |
|          | 125±1μs                      | 124±1μs                     | 0.99    | import_iris.Iris.time_coord_categorisation                                                  |
|          | 367±4μs                      | 369±9μs                     | 1.00    | import_iris.Iris.time_coord_systems                                                         |
|          | 752±4μs                      | 759±7μs                     | 1.01    | import_iris.Iris.time_coords                                                                |
|          | 660±9μs                      | 663±4μs                     | 1.01    | import_iris.Iris.time_cube                                                                  |
|          | 229±2μs                      | 230±4μs                     | 1.01    | import_iris.Iris.time_exceptions                                                            |
|          | 77.6±0.6μs                   | 77.5±0.7μs                  | 1.00    | import_iris.Iris.time_experimental                                                          |
|          | 185±1μs                      | 185±1μs                     | 1.00    | import_iris.Iris.time_fileformats                                                           |
|          | 261±7μs                      | 255±5μs                     | 0.98    | import_iris.Iris.time_fileformats__ff                                                       |
|          | 2.74±0.01ms                  | 2.76±0.03ms                 | 1.01    | import_iris.Iris.time_fileformats__ff_cross_references                                      |
|          | 79.0±0.6μs                   | 79.7±1μs                    | 1.01    | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                          |
|          | 116±2μs                      | 116±0.8μs                   | 1.00    | import_iris.Iris.time_fileformats_abf                                                       |
|          | 406±4μs                      | 408±2μs                     | 1.00    | import_iris.Iris.time_fileformats_cf                                                        |
|          | 5.33±0.07ms                  | 5.30±0.07ms                 | 1.00    | import_iris.Iris.time_fileformats_dot                                                       |
|          | 75.1±0.7μs                   | 75.6±1μs                    | 1.01    | import_iris.Iris.time_fileformats_name                                                      |
|          | 259±3μs                      | 260±2μs                     | 1.00    | import_iris.Iris.time_fileformats_name_loaders                                              |
|          | 119±1μs                      | 120±1μs                     | 1.00    | import_iris.Iris.time_fileformats_netcdf                                                    |
|          | 125±2μs                      | 124±0.9μs                   | 0.99    | import_iris.Iris.time_fileformats_nimrod                                                    |
|          | 215±2μs                      | 214±3μs                     | 0.99    | import_iris.Iris.time_fileformats_nimrod_load_rules                                         |
|          | 781±6μs                      | 790±5μs                     | 1.01    | import_iris.Iris.time_fileformats_pp                                                        |
|          | 183±2μs                      | 185±1μs                     | 1.01    | import_iris.Iris.time_fileformats_pp_load_rules                                             |
|          | 138±0.8μs                    | 136±0.9μs                   | 0.98    | import_iris.Iris.time_fileformats_pp_save_rules                                             |
|          | 526±3μs                      | 523±4μs                     | 0.99    | import_iris.Iris.time_fileformats_rules                                                     |
|          | 223±5μs                      | 223±4μs                     | 1.00    | import_iris.Iris.time_fileformats_structured_array_identification                           |
|          | 83.9±0.8μs                   | 84.3±0.5μs                  | 1.01    | import_iris.Iris.time_fileformats_um                                                        |
|          | 163±2μs                      | 163±1μs                     | 1.00    | import_iris.Iris.time_fileformats_um__fast_load                                             |
|          | 139±1μs                      | 140±0.7μs                   | 1.01    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                           |
|          | 76.9±0.9μs                   | 76.2±0.6μs                  | 0.99    | import_iris.Iris.time_fileformats_um__ff_replacement                                        |
|          | 82.5±0.4μs                   | 83.2±0.8μs                  | 1.01    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                             |
|          | 1.00±0ms                     | 999±4μs                     | 1.00    | import_iris.Iris.time_fileformats_um_cf_map                                                 |
|          | 138±3μs                      | 138±0.6μs                   | 1.00    | import_iris.Iris.time_io                                                                    |
|          | 176±3μs                      | 178±3μs                     | 1.01    | import_iris.Iris.time_io_format_picker                                                      |
|          | 234±3μs                      | 231±2μs                     | 0.99    | import_iris.Iris.time_iris                                                                  |
|          | 129±0.6μs                    | 129±0.6μs                   | 1.00    | import_iris.Iris.time_iterate                                                               |
|          | 8.37±0.06ms                  | 8.39±0.06ms                 | 1.00    | import_iris.Iris.time_palette                                                               |
|          | 107±1μs                      | 105±0.4μs                   | 0.98    | import_iris.Iris.time_quickplot                                                             |
|          | 2.22±0.03ms                  | 2.26±0.02ms                 | 1.02    | import_iris.Iris.time_std_names                                                             |
|          | 1.79±0.01ms                  | 1.78±0.01ms                 | 0.99    | import_iris.Iris.time_symbols                                                               |
|          | 87.6±0.6ms                   | 88.2±0.8ms                  | 1.01    | import_iris.Iris.time_tests                                                                 |
|          | 257±2μs                      | 255±4μs                     | 0.99    | import_iris.Iris.time_third_party_cartopy                                                   |
|          | 4.74±0.02ms                  | 4.75±0.03ms                 | 1.00    | import_iris.Iris.time_third_party_cf_units                                                  |
|          | 120±0.9μs                    | 119±0.5μs                   | 0.99    | import_iris.Iris.time_third_party_cftime                                                    |
|          | 2.84±0.02ms                  | 2.84±0.04ms                 | 1.00    | import_iris.Iris.time_third_party_matplotlib                                                |
|          | 1.08±0ms                     | 1.06±0ms                    | 0.99    | import_iris.Iris.time_third_party_numpy                                                     |
|          | 170±1μs                      | 171±1μs                     | 1.00    | import_iris.Iris.time_third_party_scipy                                                     |
|          | 102±1μs                      | 101±0.8μs                   | 0.99    | import_iris.Iris.time_time                                                                  |
|          | 331±2μs                      | 332±5μs                     | 1.00    | import_iris.Iris.time_util                                                                  |
|          | 72.9±1μs                     | 72.4±0.7μs                  | 0.99    | iterate.IZip.time_izip                                                                      |
|          | 8.94±0.08ms                  | 9.06±0.09ms                 | 1.01    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                  |
|          | 23.9±0.3ms                   | 25.9±0.5ms                  | 1.08    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                              |
|          | 9.71±0.06ms                  | 9.73±0.1ms                  | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                  |
|          | 8.94±0.04ms                  | 8.91±0.1ms                  | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                   |
|          | 21.6±0.1ms                   | 22.0±0.4ms                  | 1.02    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                               |
|          | 9.78±0.1ms                   | 9.73±0.06ms                 | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                   |
|          | 1.52±0.02s                   | 1.51±0.02s                  | 0.99    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                    |
|          | 21.5±0.2ms                   | 21.7±0.5ms                  | 1.01    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                |
|          | 1.70±0.02s                   | 1.68±0.01s                  | 0.99    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                    |
|          | 1.53±0.01s                   | 1.52±0.01s                  | 0.99    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                     |
|          | 21.6±0.3ms                   | 21.8±0.3ms                  | 1.01    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                 |
|          | 1.68±0.01s                   | 1.69±0.01s                  | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                     |
|          | 4.26±0.05ms                  | 4.25±0.05ms                 | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                     |
|          | 19.9±0.2ms                   | 20.2±0.4ms                  | 1.01    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                 |
|          | 4.60±0.04ms                  | 4.61±0.04ms                 | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                     |
|          | 4.25±0.03ms                  | 4.25±0.05ms                 | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                      |
|          | 20.2±0.2ms                   | 20.2±0.4ms                  | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                  |
|          | 4.57±0.05ms                  | 4.52±0.03ms                 | 0.99    | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                      |
|          | 35.3±4ms                     | 34.3±3ms                    | 0.97    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                               |
|          | 19.8±0.6ms                   | 20.3±0.3ms                  | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                           |
|          | 13.9±2ms                     | 14.0±3ms                    | 1.01    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                               |
|          | 26.0±2ms                     | 26.1±2ms                    | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                |
|          | 71.0±2ms                     | 70.7±1ms                    | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                            |
|          | 25.8±2ms                     | 26.0±1ms                    | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                |
|          | 490±5ms                      | 488±5ms                     | 1.00    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                 |
|          | 2.98±0.09ms                  | 2.85±0.09ms                 | 0.96    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                             |
|          | 497±9ms                      | 493±4ms                     | 0.99    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                 |
|          | 501±4ms                      | 495±5ms                     | 0.99    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                  |
|          | 2.97±0.06ms                  | 2.93±0.1ms                  | 0.99    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                              |
|          | 505±5ms                      | 504±5ms                     | 1.00    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                  |
|          | 1.70±0.08ms                  | 1.67±0.1ms                  | 0.98    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                  |
|          | 2.92±0.05ms                  | 2.93±0.1ms                  | 1.00    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                              |
|          | 1.69±0.05ms                  | 1.73±0.07ms                 | 1.02    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                  |
|          | 1.74±0.09ms                  | 1.70±0.07ms                 | 0.98    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                   |
|          | 3.04±0.09ms                  | 2.87±0.07ms                 | 0.94    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                               |
|          | 1.75±0.07ms                  | 1.69±0.03ms                 | 0.96    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                   |
|          | 367±4ms                      | 366±3ms                     | 1.00    | load.ManyVars.time_many_var_load                                                            |
|          | 9.12±0.1ms                   | 9.23±0.1ms                  | 1.01    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                            |
|          | 9.83±0.08ms                  | 9.90±0.1ms                  | 1.01    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                            |
|          | 1.54±0.01s                   | 1.55±0.01s                  | 1.01    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                              |
|          | 1.74±0.02s                   | 1.74±0.03s                  | 1.00    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                              |
|          | 4.37±0.05ms                  | 4.30±0.07ms                 | 0.99    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                 |
|          | 4.57±0.03ms                  | 4.61±0.05ms                 | 1.01    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                 |
|          | 8.92±0.1ms                   | 8.88±0.04ms                 | 1.00    | load.StructuredFF.time_structured_load((1280, 960, 5), False)                               |
|          | 5.85±0.04ms                  | 5.80±0.04ms                 | 0.99    | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                |
|          | 1.53±0.02s                   | 1.53±0.03s                  | 1.00    | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                 |
|          | 528±10ms                     | 531±10ms                    | 1.01    | load.StructuredFF.time_structured_load((2, 2, 1000), True)                                  |
|          | 4.23±0.02ms                  | 4.25±0.04ms                 | 1.00    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                    |
|          | 4.16±0.02ms                  | 4.17±0.06ms                 | 1.00    | load.StructuredFF.time_structured_load((2, 2, 2), True)                                     |
|          | 162±2ms                      | 163±2ms                     | 1.01    | load.TimeConstraint.time_time_constraint(20, 'FF')                                          |
|          | 23.5±0.3ms                   | 24.0±0.2ms                  | 1.02    | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                      |
|          | 178±2ms                      | 183±2ms                     | 1.03    | load.TimeConstraint.time_time_constraint(20, 'PP')                                          |
|          | 31.5±0.2ms                   | 31.5±0.3ms                  | 1.00    | load.TimeConstraint.time_time_constraint(3, 'FF')                                           |
|          | 23.4±0.3ms                   | 23.6±0.2ms                  | 1.01    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                       |
|          | 34.3±0.6ms                   | 34.0±0.3ms                  | 0.99    | load.TimeConstraint.time_time_constraint(3, 'PP')                                           |
|          | 17.9±0.4ms                   | 18.0±0.3ms                  | 1.01    | load.ugrid.BasicLoading.time_load_file(1)                                                   |
|          | 44.4±0.5ms                   | 46.3±0.9ms                  | 1.04    | load.ugrid.BasicLoading.time_load_file(200000)                                              |
|          | 14.8±0.3ms                   | 14.8±0.2ms                  | 1.00    | load.ugrid.BasicLoading.time_load_mesh(1)                                                   |
|          | 23.3±0.8ms                   | 25.1±0.5ms                  | 1.08    | load.ugrid.BasicLoading.time_load_mesh(200000)                                              |
|          | 18.1±0.4ms                   | 18.5±0.2ms                  | 1.02    | load.ugrid.BasicLoadingTime.time_load_file(1)                                               |
|          | 20.9±0.7ms                   | 22.7±0.3ms                  | 1.08    | load.ugrid.BasicLoadingTime.time_load_file(200000)                                          |
|          | 14.9±0.3ms                   | 14.8±0.2ms                  | 0.99    | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                               |
|          | 17.4±0.4ms                   | 19.1±0.7ms                  | 1.09    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                          |
|          | 19.1±0.4ms                   | 19.6±0.6ms                  | 1.03    | load.ugrid.Callback.time_load_file_callback(1)                                              |
|          | 54.2±0.6ms                   | 57.9±0.9ms                  | 1.07    | load.ugrid.Callback.time_load_file_callback(200000)                                         |
|          | 19.1±0.6ms                   | 19.3±0.5ms                  | 1.01    | load.ugrid.CallbackTime.time_load_file_callback(1)                                          |
|          | 22.7±0.7ms                   | 25.4±0.6ms                  | 1.12    | load.ugrid.CallbackTime.time_load_file_callback(200000)                                     |
|          | 2.85±0.09ms                  | 2.80±0.1ms                  | 0.98    | load.ugrid.DataRealisation.time_realise_data(10000)                                         |
|          | 5.55±0.09ms                  | 5.40±1ms                    | 0.97    | load.ugrid.DataRealisation.time_realise_data(200000)                                        |
|          | 37.5±1ms                     | 36.4±2ms                    | 0.97    | load.ugrid.DataRealisationTime.time_realise_data(10000)                                     |
|          | 817±7ms                      | 809±10ms                    | 0.99    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                    |
|          | 422±4ms                      | 437±5ms                     | 1.04    | merge_concat.Concatenate.time_concatenate(False)                                            |
|          | 424±4ms                      | 431±4ms                     | 1.02    | merge_concat.Concatenate.time_concatenate(True)                                             |
|          | 119±5M                       | 109±0.2M                    | 0.91    | merge_concat.Concatenate.tracemalloc_concatenate(False)                                     |
|          | 114±5M                       | 109±3M                      | 0.95    | merge_concat.Concatenate.tracemalloc_concatenate(True)                                      |
|          | 51.4±0.7ms                   | 57.9±1ms                    | 1.13    | merge_concat.Merge.time_merge                                                               |
|          | 914±300k                     | 1.13±0.3M                   | ~1.24   | merge_concat.Merge.tracemalloc_merge                                                        |
|          | 461±3ns                      | 465±4ns                     | 1.01    | mesh.utils.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)              |
|          | 258±2ms                      | 258±3ms                     | 1.00    | mesh.utils.regions_combine.CombineRegionsComputeRealData.time_compute_data(500)             |
|          | 656±2k                       | 656±2k                      | 1.00    | mesh.utils.regions_combine.CombineRegionsComputeRealData.tracemalloc_compute_data(50)       |
|          | 60.1±0M                      | 60.1±0M                     | 1.00    | mesh.utils.regions_combine.CombineRegionsComputeRealData.tracemalloc_compute_data(500)      |
|          | 16.6±0.2ms                   | 16.4±0.2ms                  | 0.99    | mesh.utils.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)           |
|          | 18.7±0.5ms                   | 18.4±0.2ms                  | 0.99    | mesh.utils.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)          |
|          | 498±20k                      | 501±30k                     | 1.01    | mesh.utils.regions_combine.CombineRegionsCreateCube.tracemalloc_create_combined_cube(50)    |
|          | 12.4±0.02M                   | 12.4±0.03M                  | 1.00    | mesh.utils.regions_combine.CombineRegionsCreateCube.tracemalloc_create_combined_cube(500)   |
|          | 110±1ms                      | 118±2ms                     | 1.08    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)         |
|          | 710±7ms                      | 728±7ms                     | 1.03    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)        |
|          | 1.24±0.04M                   | 1.24±0.02M                  | 1.00    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.tracemalloc_stream_file2file(50)  |
|          | 96.3±0.04M                   | 96.3±0.03M                  | 1.00    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.tracemalloc_stream_file2file(500) |
|          | 70.2±0.5ms                   | 78.0±1ms                    | 1.11    | mesh.utils.regions_combine.CombineRegionsSaveData.time_save(50)                             |
|          | 663±3ms                      | 686±2ms                     | 1.04    | mesh.utils.regions_combine.CombineRegionsSaveData.time_save(500)                            |
|          | 1.17±0.01M                   | 1.16±0.02M                  | 0.99    | mesh.utils.regions_combine.CombineRegionsSaveData.tracemalloc_save(50)                      |
|          | 96.2±0.02M                   | 96.2±0.02M                  | 1.00    | mesh.utils.regions_combine.CombineRegionsSaveData.tracemalloc_save(500)                     |
|          | 2.1752849999999997           | 2.1752849999999997          | 1.00    | mesh.utils.regions_combine.CombineRegionsSaveData.track_filesize_saved(50)                  |
|          | 216.01528499999998           | 216.01528499999998          | 1.00    | mesh.utils.regions_combine.CombineRegionsSaveData.track_filesize_saved(500)                 |
|          | 6.59±0.01ms                  | 6.58±0.09ms                 | 1.00    | plot.AuxSort.time_aux_sort                                                                  |
|          | 80.8±1ms                     | 81.4±2ms                    | 1.01    | regridding.CurvilinearRegridding.time_regrid_pic                                            |
|          | 136±3M                       | 136±3M                      | 1.00    | regridding.CurvilinearRegridding.tracemalloc_regrid_pic                                     |
|          | 101±0.6ms                    | 102±1ms                     | 1.01    | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                   |
|          | 51.7±2ms                     | 50.4±1ms                    | 0.98    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                          |
|          | 106±0.04M                    | 106±0.05M                   | 1.00    | regridding.HorizontalChunkedRegridding.tracemalloc_regrid_area_w                            |
|          | 147±0.02M                    | 147±0.02M                   | 1.00    | regridding.HorizontalChunkedRegridding.tracemalloc_regrid_area_w_new_grid                   |
|          | 4.48±0.02ms                  | 4.46±0.09ms                 | 1.00    | save.NetcdfSave.time_netcdf_save_cube(50, False)                                            |
|          | 74.0±0.2ms                   | 82.4±2ms                    | 1.11    | save.NetcdfSave.time_netcdf_save_cube(50, True)                                             |
|          | 53.1±2ms                     | 53.6±1ms                    | 1.01    | save.NetcdfSave.time_netcdf_save_cube(600, False)                                           |
|          | 576±5ms                      | 587±6ms                     | 1.02    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                            |
|          | 90.4±1ns                     | 91.5±0.9ns                  | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                            |
|          | 56.0±0.3ms                   | 62.6±0.6ms                  | 1.12    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                             |
|          | 89.5±0.6ns                   | 90.1±2ns                    | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                           |
|          | 505±4ms                      | 521±4ms                     | 1.03    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                            |
|          | 27.2±0.1k                    | 27.2±0.09k                  | 1.00    | save.NetcdfSave.tracemalloc_netcdf_save(50, False)                                          |
|          | 1.71±0.1M                    | 1.72±0.1M                   | 1.01    | save.NetcdfSave.tracemalloc_netcdf_save(50, True)                                           |
|          | 27.2±0.08k                   | 27.2±0.06k                  | 1.00    | save.NetcdfSave.tracemalloc_netcdf_save(600, False)                                         |
|          | 225±30M                      | 191±20M                     | 0.85    | save.NetcdfSave.tracemalloc_netcdf_save(600, True)                                          |
|          | 48.4±0.8ms                   | 49.1±1ms                    | 1.02    | stats.PearsonR.time_lazy                                                                    |
|          | 19.0±0.1ms                   | 19.0±0.3ms                  | 1.00    | stats.PearsonR.time_real                                                                    |
|          | 19.9±0.2M                    | 19.9±0.1M                   | 1.00    | stats.PearsonR.tracemalloc_lazy                                                             |
|          | 18.4±0.01M                   | 18.4±0.01M                  | 1.00    | stats.PearsonR.tracemalloc_real                                                             |
|          | 23.7±1ms                     | 27.7±0.5ms                  | 1.17    | trajectory.TrajectoryInterpolation.time_trajectory_linear                                   |
|          | 59.8±0.6ms                   | 68.1±1ms                    | 1.14    | trajectory.TrajectoryInterpolation.time_trajectory_nearest                                  |
|          | 23.3±0.01M                   | 23.3±0.01M                  | 1.00    | trajectory.TrajectoryInterpolation.tracemalloc_trajectory_linear                            |
|          | 12.1±0.05M                   | 12.1±0.05M                  | 1.00    | trajectory.TrajectoryInterpolation.tracemalloc_trajectory_nearest                           |

Benchmarks that have got worse:

| Change   | Before [cc60a605] <main~2>   | After [d2fc1dba] <main~1>   |   Ratio | Benchmark (Parameter)                                              |
|----------|------------------------------|-----------------------------|---------|--------------------------------------------------------------------|
| +        | 20.2±0.4ms                   | 26.1±0.09ms                 |    1.29 | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(False)      |
| +        | 24.8±0.4ms                   | 30.1±0.3ms                  |    1.21 | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(True)       |
| +        | 18.4±0.5ms                   | 24.0±0.3ms                  |    1.3  | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(False)      |
| +        | 22.9±0.6ms                   | 28.5±0.2ms                  |    1.25 | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(True)       |
| +        | 18.7±0.6ms                   | 24.0±0.3ms                  |    1.29 | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(False)      |
| +        | 22.8±0.7ms                   | 28.4±0.3ms                  |    1.25 | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(True)       |
| +        | 19.2±0.4ms                   | 24.7±0.3ms                  |    1.29 | aggregate_collapse.Aggregation.time_collapsed_by_MAX(False)        |
| +        | 23.3±0.5ms                   | 28.9±0.3ms                  |    1.24 | aggregate_collapse.Aggregation.time_collapsed_by_MAX(True)         |
| +        | 19.3±0.6ms                   | 25.4±0.2ms                  |    1.32 | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(False)       |
| +        | 23.9±0.6ms                   | 29.3±0.3ms                  |    1.23 | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(True)        |
| +        | 19.0±0.5ms                   | 24.4±0.5ms                  |    1.28 | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(False)     |
| +        | 23.2±0.7ms                   | 28.8±0.4ms                  |    1.24 | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(True)      |
| +        | 18.9±0.6ms                   | 24.8±0.2ms                  |    1.31 | aggregate_collapse.Aggregation.time_collapsed_by_MIN(False)        |
| +        | 23.2±0.6ms                   | 28.5±0.2ms                  |    1.23 | aggregate_collapse.Aggregation.time_collapsed_by_MIN(True)         |
| +        | 18.1±0.5ms                   | 23.8±0.2ms                  |    1.32 | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(False) |
| +        | 22.5±0.7ms                   | 28.3±0.4ms                  |    1.26 | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(True)  |
| +        | 22.2±0.4ms                   | 27.6±0.4ms                  |    1.25 | aggregate_collapse.Aggregation.time_collapsed_by_RMS(False)        |
| +        | 22.1±0.5ms                   | 27.4±0.4ms                  |    1.24 | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(False)    |
| +        | 26.4±0.5ms                   | 31.7±0.3ms                  |    1.2  | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(True)     |
| +        | 21.6±0.7ms                   | 26.9±0.5ms                  |    1.24 | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(False)   |
| +        | 25.5±0.6ms                   | 31.0±0.3ms                  |    1.22 | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(True)    |

Generated by GHA run 11300372142

[trexfeathers]

Expected: #6171 (comment)