Performance Shift(s): 54f430bb

[github-actions]

Benchmark comparison has identified performance shifts at:

• commit 54f430b (Make Iris backwards compatible with Cartopy #6172).

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

⏱️ Performance Benchmark Report: 54f430b

Performance shifts

| Change   | Before [e8c826a1] <main~1>   | After [54f430bb] <main>   |   Ratio | Benchmark (Parameter)      |
|----------|------------------------------|---------------------------|---------|----------------------------|
| +        | 343±2μs                      | 1.90±0.02ms               |    5.53 | import_iris.Iris.time_plot |

Full benchmark results

Benchmarks that have stayed the same:

| Change   | Before [e8c826a1] <main~1>   | After [54f430bb] <main>   | Ratio   | Benchmark (Parameter)                                                                       |
|----------|------------------------------|---------------------------|---------|---------------------------------------------------------------------------------------------|
|          | 60.2±1ms                     | 60.4±0.9ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_COUNT(False)                              |
|          | 62.4±1ms                     | 61.5±1ms                  | 0.99    | aggregate_collapse.Aggregation.time_aggregated_by_COUNT(True)                               |
|          | 222±4ms                      | 222±3ms                   | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_FAST_PERCENTILE(False)                    |
|          | 223±5ms                      | 223±2ms                   | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_FAST_PERCENTILE(True)                     |
|          | 38.9±0.5ms                   | 39.2±0.4ms                | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_GMEAN(False)                              |
|          | 40.0±0.3ms                   | 40.0±0.5ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_GMEAN(True)                               |
|          | 38.9±0.5ms                   | 39.4±0.6ms                | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_HMEAN(False)                              |
|          | 39.7±0.9ms                   | 40.1±1ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_HMEAN(True)                               |
|          | 52.0±0.8ms                   | 52.0±0.9ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_MAX(False)                                |
|          | 53.5±0.7ms                   | 53.2±0.6ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_MAX(True)                                 |
|          | 138±2ms                      | 138±1ms                   | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_MAX_RUN(False)                            |
|          | 139±1ms                      | 139±2ms                   | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_MAX_RUN(True)                             |
|          | 58.1±1ms                     | 56.8±1ms                  | 0.98    | aggregate_collapse.Aggregation.time_aggregated_by_MEAN(False)                               |
|          | 58.9±1ms                     | 58.1±0.9ms                | 0.99    | aggregate_collapse.Aggregation.time_aggregated_by_MEAN(True)                                |
|          | 39.9±0.9ms                   | 39.1±0.7ms                | 0.98    | aggregate_collapse.Aggregation.time_aggregated_by_MEDIAN(False)                             |
|          | 40.6±0.5ms                   | 40.1±0.5ms                | 0.99    | aggregate_collapse.Aggregation.time_aggregated_by_MEDIAN(True)                              |
|          | 52.5±0.8ms                   | 52.1±0.3ms                | 0.99    | aggregate_collapse.Aggregation.time_aggregated_by_MIN(False)                                |
|          | 52.8±0.9ms                   | 53.2±0.7ms                | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MIN(True)                                 |
|          | 1.35±0.02s                   | 1.37±0.01s                | 1.02    | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(False)                               |
|          | 1.35±0.01s                   | 1.35±0.01s                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(True)                                |
|          | 702±10ms                     | 705±20ms                  | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(False)                         |
|          | 716±10ms                     | 710±20ms                  | 0.99    | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(True)                          |
|          | 37.5±0.5ms                   | 37.5±0.6ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_PROPORTION(False)                         |
|          | 38.5±0.9ms                   | 38.9±0.9ms                | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_PROPORTION(True)                          |
|          | 70.8±1ms                     | 70.9±1ms                  | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_RMS(False)                                |
|          | 71.3±2ms                     | 70.9±1ms                  | 0.99    | aggregate_collapse.Aggregation.time_aggregated_by_RMS(True)                                 |
|          | 72.5±0.6ms                   | 73.2±1ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_STD_DEV(False)                            |
|          | 73.4±1ms                     | 73.4±0.9ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_STD_DEV(True)                             |
|          | 68.1±1ms                     | 68.2±2ms                  | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_VARIANCE(False)                           |
|          | 69.2±0.7ms                   | 68.2±1ms                  | 0.98    | aggregate_collapse.Aggregation.time_aggregated_by_VARIANCE(True)                            |
|          | 26.4±0.6ms                   | 26.1±0.4ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(False)                               |
|          | 30.8±0.5ms                   | 30.4±0.4ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(True)                                |
|          | 154±2ms                      | 156±2ms                   | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_FAST_PERCENTILE(False)                     |
|          | 170±2ms                      | 168±1ms                   | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_FAST_PERCENTILE(True)                      |
|          | 24.6±0.5ms                   | 24.1±0.4ms                | 0.98    | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(False)                               |
|          | 28.7±0.4ms                   | 28.6±0.6ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(True)                                |
|          | 24.4±0.5ms                   | 24.0±0.6ms                | 0.98    | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(False)                               |
|          | 28.5±0.3ms                   | 28.4±0.5ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(True)                                |
|          | 24.8±0.4ms                   | 25.0±0.6ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_MAX(False)                                 |
|          | 28.9±0.6ms                   | 29.1±0.4ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_MAX(True)                                  |
|          | 38.0±0.7ms                   | 38.4±0.7ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_MAX_RUN(False)                             |
|          | 42.6±1ms                     | 43.5±1ms                  | 1.02    | aggregate_collapse.Aggregation.time_collapsed_by_MAX_RUN(True)                              |
|          | 25.4±0.3ms                   | 25.6±0.6ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(False)                                |
|          | 29.9±0.8ms                   | 29.5±0.6ms                | 0.98    | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(True)                                 |
|          | 24.9±0.5ms                   | 24.9±0.4ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(False)                              |
|          | 29.4±0.5ms                   | 29.3±0.4ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(True)                               |
|          | 24.6±0.4ms                   | 25.0±0.4ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_MIN(False)                                 |
|          | 29.1±0.5ms                   | 29.0±0.9ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_MIN(True)                                  |
|          | 585±6ms                      | 583±3ms                   | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_PEAK(False)                                |
|          | 596±6ms                      | 585±3ms                   | 0.98    | aggregate_collapse.Aggregation.time_collapsed_by_PEAK(True)                                 |
|          | 172±2ms                      | 170±1ms                   | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_PERCENTILE(False)                          |
|          | 193±2ms                      | 193±3ms                   | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_PERCENTILE(True)                           |
|          | 24.0±0.3ms                   | 23.7±0.4ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(False)                          |
|          | 28.1±0.4ms                   | 28.3±0.4ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(True)                           |
|          | 27.9±0.6ms                   | 27.9±0.4ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_RMS(False)                                 |
|          | 32.3±0.7ms                   | 32.1±0.6ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_RMS(True)                                  |
|          | 28.3±0.7ms                   | 27.7±0.5ms                | 0.98    | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(False)                             |
|          | 32.2±1ms                     | 31.8±0.6ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(True)                              |
|          | 26.9±0.6ms                   | 26.9±0.5ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(False)                            |
|          | 31.4±0.4ms                   | 31.2±0.4ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(True)                             |
|          | 96.0±1ms                     | 96.6±0.9ms                | 1.01    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_MEAN(False)                     |
|          | 96.2±2ms                     | 97.0±2ms                  | 1.01    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_MEAN(True)                      |
|          | 110±0.8ms                    | 111±2ms                   | 1.01    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_RMS(False)                      |
|          | 111±0.8ms                    | 110±2ms                   | 1.00    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_RMS(True)                       |
|          | 66.0±0.8ms                   | 66.2±1ms                  | 1.00    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_SUM(False)                      |
|          | 66.6±1ms                     | 66.1±1ms                  | 0.99    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_SUM(True)                       |
|          | 32.3±0.9ms                   | 31.7±1ms                  | 0.98    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_MEAN(False)                      |
|          | 36.2±0.6ms                   | 36.1±0.8ms                | 1.00    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_MEAN(True)                       |
|          | 34.7±0.8ms                   | 34.1±1ms                  | 0.98    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_RMS(False)                       |
|          | 38.7±0.9ms                   | 38.9±1ms                  | 1.00    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_RMS(True)                        |
|          | 27.0±0.4ms                   | 27.1±0.6ms                | 1.00    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_SUM(False)                       |
|          | 31.5±0.5ms                   | 31.6±0.9ms                | 1.00    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_SUM(True)                        |
|          | 349±4ms                      | 351±8ms                   | 1.01    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_WPERCENTILE(False)               |
|          | 372±4ms                      | 376±8ms                   | 1.01    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_WPERCENTILE(True)                |
|          | 1.12±0.01ms                  | 1.12±0.02ms               | 1.00    | cube.CubeCreation.time_create(False, 'construct')                                           |
|          | 400±7μs                      | 399±4μs                   | 1.00    | cube.CubeCreation.time_create(False, 'instantiate')                                         |
|          | 954±7μs                      | 953±20μs                  | 1.00    | cube.CubeCreation.time_create(True, 'construct')                                            |
|          | 576±6μs                      | 579±10μs                  | 1.01    | cube.CubeCreation.time_create(True, 'instantiate')                                          |
|          | 246±3ms                      | 245±4ms                   | 1.00    | cube.CubeEquality.time_equality(False, False, 'all_equal')                                  |
|          | 129±2ms                      | 129±4ms                   | 1.01    | cube.CubeEquality.time_equality(False, False, 'coord_inequality')                           |
|          | 257±3ms                      | 259±5ms                   | 1.01    | cube.CubeEquality.time_equality(False, False, 'data_inequality')                            |
|          | 16.9±0.3μs                   | 16.7±0.2μs                | 0.99    | cube.CubeEquality.time_equality(False, False, 'metadata_inequality')                        |
|          | 353±4ms                      | 352±6ms                   | 1.00    | cube.CubeEquality.time_equality(False, True, 'all_equal')                                   |
|          | 233±4ms                      | 239±3ms                   | 1.02    | cube.CubeEquality.time_equality(False, True, 'coord_inequality')                            |
|          | 364±3ms                      | 368±6ms                   | 1.01    | cube.CubeEquality.time_equality(False, True, 'data_inequality')                             |
|          | 17.1±0.2μs                   | 16.7±0.2μs                | 0.98    | cube.CubeEquality.time_equality(False, True, 'metadata_inequality')                         |
|          | 247±3ms                      | 246±4ms                   | 1.00    | cube.CubeEquality.time_equality(True, False, 'all_equal')                                   |
|          | 130±3ms                      | 131±3ms                   | 1.00    | cube.CubeEquality.time_equality(True, False, 'coord_inequality')                            |
|          | 259±5ms                      | 257±4ms                   | 0.99    | cube.CubeEquality.time_equality(True, False, 'data_inequality')                             |
|          | 52.6±0.4μs                   | 52.5±0.5μs                | 1.00    | cube.CubeEquality.time_equality(True, False, 'metadata_inequality')                         |
|          | 351±4ms                      | 355±8ms                   | 1.01    | cube.CubeEquality.time_equality(True, True, 'all_equal')                                    |
|          | 237±3ms                      | 240±4ms                   | 1.01    | cube.CubeEquality.time_equality(True, True, 'coord_inequality')                             |
|          | 363±4ms                      | 363±5ms                   | 1.00    | cube.CubeEquality.time_equality(True, True, 'data_inequality')                              |
|          | 55.4±0.5μs                   | 54.2±0.6μs                | 0.98    | cube.CubeEquality.time_equality(True, True, 'metadata_inequality')                          |
|          | 785±2μs                      | 801±10μs                  | 1.02    | import_iris.Iris.time__concatenate                                                          |
|          | 184±4μs                      | 185±3μs                   | 1.01    | import_iris.Iris.time__constraints                                                          |
|          | 108±1μs                      | 110±2μs                   | 1.02    | import_iris.Iris.time__data_manager                                                         |
|          | 92.9±0.4μs                   | 93.4±0.5μs                | 1.01    | import_iris.Iris.time__deprecation                                                          |
|          | 137±0.7μs                    | 135±0.7μs                 | 0.99    | import_iris.Iris.time__lazy_data                                                            |
|          | 908±6μs                      | 914±30μs                  | 1.01    | import_iris.Iris.time__merge                                                                |
|          | 76.2±0.8μs                   | 76.5±0.8μs                | 1.00    | import_iris.Iris.time__representation                                                       |
|          | 593±7μs                      | 600±5μs                   | 1.01    | import_iris.Iris.time_analysis                                                              |
|          | 138±1μs                      | 140±1μs                   | 1.01    | import_iris.Iris.time_analysis__area_weighted                                               |
|          | 110±0.9μs                    | 109±0.6μs                 | 0.99    | import_iris.Iris.time_analysis__grid_angles                                                 |
|          | 243±2μs                      | 243±3μs                   | 1.00    | import_iris.Iris.time_analysis__interpolation                                               |
|          | 187±4μs                      | 186±2μs                   | 0.99    | import_iris.Iris.time_analysis__regrid                                                      |
|          | 112±0.8μs                    | 111±0.7μs                 | 0.98    | import_iris.Iris.time_analysis__scipy_interpolate                                           |
|          | 141±5μs                      | 138±2μs                   | 0.98    | import_iris.Iris.time_analysis_calculus                                                     |
|          | 340±8μs                      | 331±2μs                   | 0.97    | import_iris.Iris.time_analysis_cartography                                                  |
|          | 94.0±1μs                     | 93.6±0.5μs                | 0.99    | import_iris.Iris.time_analysis_geomerty                                                     |
|          | 218±2μs                      | 217±2μs                   | 0.99    | import_iris.Iris.time_analysis_maths                                                        |
|          | 99.2±3μs                     | 96.5±0.7μs                | 0.97    | import_iris.Iris.time_analysis_stats                                                        |
|          | 174±5μs                      | 175±2μs                   | 1.01    | import_iris.Iris.time_analysis_trajectory                                                   |
|          | 303±2μs                      | 310±8μs                   | 1.02    | import_iris.Iris.time_aux_factory                                                           |
|          | 83.5±0.5μs                   | 83.6±0.8μs                | 1.00    | import_iris.Iris.time_common                                                                |
|          | 162±3μs                      | 165±3μs                   | 1.02    | import_iris.Iris.time_common_lenient                                                        |
|          | 1.34±0.01ms                  | 1.35±0.03ms               | 1.00    | import_iris.Iris.time_common_metadata                                                       |
|          | 138±2μs                      | 138±1μs                   | 1.00    | import_iris.Iris.time_common_mixin                                                          |
|          | 1.19±0ms                     | 1.20±0.02ms               | 1.00    | import_iris.Iris.time_common_resolve                                                        |
|          | 199±3μs                      | 199±2μs                   | 1.00    | import_iris.Iris.time_config                                                                |
|          | 124±2μs                      | 124±1μs                   | 1.00    | import_iris.Iris.time_coord_categorisation                                                  |
|          | 370±8μs                      | 371±4μs                   | 1.00    | import_iris.Iris.time_coord_systems                                                         |
|          | 756±2μs                      | 759±20μs                  | 1.00    | import_iris.Iris.time_coords                                                                |
|          | 663±8μs                      | 663±20μs                  | 1.00    | import_iris.Iris.time_cube                                                                  |
|          | 225±3μs                      | 228±3μs                   | 1.01    | import_iris.Iris.time_exceptions                                                            |
|          | 76.8±1μs                     | 76.6±1μs                  | 1.00    | import_iris.Iris.time_experimental                                                          |
|          | 184±1μs                      | 183±0.5μs                 | 1.00    | import_iris.Iris.time_fileformats                                                           |
|          | 250±3μs                      | 254±6μs                   | 1.02    | import_iris.Iris.time_fileformats__ff                                                       |
|          | 2.76±0.03ms                  | 2.76±0.04ms               | 1.00    | import_iris.Iris.time_fileformats__ff_cross_references                                      |
|          | 78.4±0.7μs                   | 78.7±1μs                  | 1.00    | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                          |
|          | 116±2μs                      | 115±0.8μs                 | 0.99    | import_iris.Iris.time_fileformats_abf                                                       |
|          | 409±6μs                      | 408±2μs                   | 1.00    | import_iris.Iris.time_fileformats_cf                                                        |
|          | 5.30±0.07ms                  | 5.40±0.07ms               | 1.02    | import_iris.Iris.time_fileformats_dot                                                       |
|          | 74.3±0.6μs                   | 74.5±0.6μs                | 1.00    | import_iris.Iris.time_fileformats_name                                                      |
|          | 257±3μs                      | 257±2μs                   | 1.00    | import_iris.Iris.time_fileformats_name_loaders                                              |
|          | 118±1μs                      | 120±2μs                   | 1.01    | import_iris.Iris.time_fileformats_netcdf                                                    |
|          | 124±1μs                      | 124±2μs                   | 1.00    | import_iris.Iris.time_fileformats_nimrod                                                    |
|          | 210±2μs                      | 211±5μs                   | 1.01    | import_iris.Iris.time_fileformats_nimrod_load_rules                                         |
|          | 785±4μs                      | 782±7μs                   | 1.00    | import_iris.Iris.time_fileformats_pp                                                        |
|          | 181±3μs                      | 178±3μs                   | 0.98    | import_iris.Iris.time_fileformats_pp_load_rules                                             |
|          | 133±0.6μs                    | 133±2μs                   | 1.00    | import_iris.Iris.time_fileformats_pp_save_rules                                             |
|          | 518±2μs                      | 520±3μs                   | 1.01    | import_iris.Iris.time_fileformats_rules                                                     |
|          | 220±2μs                      | 220±2μs                   | 1.00    | import_iris.Iris.time_fileformats_structured_array_identification                           |
|          | 83.3±0.5μs                   | 83.7±0.9μs                | 1.00    | import_iris.Iris.time_fileformats_um                                                        |
|          | 161±2μs                      | 160±1μs                   | 0.99    | import_iris.Iris.time_fileformats_um__fast_load                                             |
|          | 137±2μs                      | 138±0.9μs                 | 1.01    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                           |
|          | 75.2±0.9μs                   | 75.0±0.6μs                | 1.00    | import_iris.Iris.time_fileformats_um__ff_replacement                                        |
|          | 81.4±0.4μs                   | 81.1±0.7μs                | 1.00    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                             |
|          | 992±9μs                      | 984±10μs                  | 0.99    | import_iris.Iris.time_fileformats_um_cf_map                                                 |
|          | 135±2μs                      | 137±1μs                   | 1.02    | import_iris.Iris.time_io                                                                    |
|          | 174±4μs                      | 174±3μs                   | 1.00    | import_iris.Iris.time_io_format_picker                                                      |
|          | 228±7μs                      | 228±4μs                   | 1.00    | import_iris.Iris.time_iris                                                                  |
|          | 127±2μs                      | 127±0.9μs                 | 1.00    | import_iris.Iris.time_iterate                                                               |
|          | 8.29±0.07ms                  | 8.36±0.05ms               | 1.01    | import_iris.Iris.time_palette                                                               |
|          | 104±2μs                      | 104±0.8μs                 | 1.00    | import_iris.Iris.time_quickplot                                                             |
|          | 2.23±0.1ms                   | 2.18±0.04ms               | 0.98    | import_iris.Iris.time_std_names                                                             |
|          | 1.77±0.01ms                  | 1.78±0.03ms               | 1.01    | import_iris.Iris.time_symbols                                                               |
|          | 101±2ms                      | 103±2ms                   | 1.01    | import_iris.Iris.time_tests                                                                 |
|          | 257±3μs                      | 256±4μs                   | 1.00    | import_iris.Iris.time_third_party_cartopy                                                   |
|          | 4.77±0.03ms                  | 4.77±0.04ms               | 1.00    | import_iris.Iris.time_third_party_cf_units                                                  |
|          | 119±1μs                      | 119±0.5μs                 | 1.00    | import_iris.Iris.time_third_party_cftime                                                    |
|          | 2.80±0.02ms                  | 2.81±0.01ms               | 1.00    | import_iris.Iris.time_third_party_matplotlib                                                |
|          | 1.06±0ms                     | 1.06±0ms                  | 1.00    | import_iris.Iris.time_third_party_numpy                                                     |
|          | 172±3μs                      | 174±3μs                   | 1.01    | import_iris.Iris.time_third_party_scipy                                                     |
|          | 99.1±1μs                     | 101±1μs                   | 1.01    | import_iris.Iris.time_time                                                                  |
|          | 327±3μs                      | 327±5μs                   | 1.00    | import_iris.Iris.time_util                                                                  |
|          | 72.3±0.4μs                   | 71.6±1μs                  | 0.99    | iterate.IZip.time_izip                                                                      |
|          | 8.93±0.1ms                   | 8.90±0.06ms               | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                  |
|          | 26.4±0.3ms                   | 26.5±0.6ms                | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                              |
|          | 9.69±0.06ms                  | 9.82±0.1ms                | 1.01    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                  |
|          | 9.07±0.05ms                  | 8.90±0.06ms               | 0.98    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                   |
|          | 21.5±0.4ms                   | 21.8±0.3ms                | 1.01    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                               |
|          | 9.75±0.1ms                   | 9.67±0.08ms               | 0.99    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                   |
|          | 1.54±0.01s                   | 1.53±0.01s                | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                    |
|          | 21.9±0.3ms                   | 22.2±0.1ms                | 1.01    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                |
|          | 1.71±0.01s                   | 1.69±0.01s                | 0.99    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                    |
|          | 1.53±0.01s                   | 1.53±0.01s                | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                     |
|          | 21.9±0.2ms                   | 21.7±0.2ms                | 0.99    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                 |
|          | 1.70±0.01s                   | 1.69±0.01s                | 0.99    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                     |
|          | 4.27±0.05ms                  | 4.22±0.02ms               | 0.99    | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                     |
|          | 20.1±0.4ms                   | 20.4±0.3ms                | 1.01    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                 |
|          | 4.54±0.05ms                  | 4.52±0.03ms               | 0.99    | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                     |
|          | 4.32±0.04ms                  | 4.23±0.03ms               | 0.98    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                      |
|          | 20.2±0.4ms                   | 20.7±0.3ms                | 1.02    | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                  |
|          | 4.48±0.01ms                  | 4.53±0.02ms               | 1.01    | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                      |
|          | 31.7±3ms                     | 34.4±3ms                  | 1.08    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                               |
|          | 20.2±0.4ms                   | 20.4±0.2ms                | 1.01    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                           |
|          | 13.3±1ms                     | 13.6±2ms                  | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                               |
|          | 25.7±1ms                     | 25.8±0.4ms                | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                |
|          | 70.7±1ms                     | 70.5±1ms                  | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                            |
|          | 26.1±1ms                     | 26.2±0.9ms                | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                |
|          | 501±6ms                      | 496±7ms                   | 0.99    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                 |
|          | 3.10±0.1ms                   | 3.06±0.2ms                | 0.99    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                             |
|          | 503±7ms                      | 503±5ms                   | 1.00    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                 |
|          | 498±3ms                      | 497±5ms                   | 1.00    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                  |
|          | 2.93±0.1ms                   | 3.03±0.06ms               | 1.03    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                              |
|          | 507±3ms                      | 507±4ms                   | 1.00    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                  |
|          | 1.67±0.07ms                  | 1.68±0.05ms               | 1.01    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                  |
|          | 2.99±0.1ms                   | 2.93±0.08ms               | 0.98    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                              |
|          | 1.72±0.09ms                  | 1.73±0.06ms               | 1.00    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                  |
|          | 1.72±0.1ms                   | 1.70±0.1ms                | 0.99    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                   |
|          | 3.00±0.1ms                   | 2.92±0.2ms                | 0.98    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                               |
|          | 1.67±0.07ms                  | 1.72±0.09ms               | 1.03    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                   |
|          | 365±1ms                      | 365±4ms                   | 1.00    | load.ManyVars.time_many_var_load                                                            |
|          | 9.13±0.05ms                  | 9.00±0.09ms               | 0.99    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                            |
|          | 9.84±0.03ms                  | 9.85±0.04ms               | 1.00    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                            |
|          | 1.54±0.01s                   | 1.54±0.01s                | 1.00    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                              |
|          | 1.72±0.01s                   | 1.72±0.01s                | 1.00    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                              |
|          | 4.31±0.04ms                  | 4.31±0.01ms               | 1.00    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                 |
|          | 4.58±0.05ms                  | 4.61±0.05ms               | 1.00    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                 |
|          | 9.03±0.1ms                   | 8.92±0.1ms                | 0.99    | load.StructuredFF.time_structured_load((1280, 960, 5), False)                               |
|          | 5.88±0.09ms                  | 5.83±0.04ms               | 0.99    | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                |
|          | 1.52±0.01s                   | 1.52±0.01s                | 1.00    | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                 |
|          | 528±3ms                      | 534±6ms                   | 1.01    | load.StructuredFF.time_structured_load((2, 2, 1000), True)                                  |
|          | 4.21±0.02ms                  | 4.23±0.1ms                | 1.00    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                    |
|          | 4.10±0.06ms                  | 4.07±0.01ms               | 0.99    | load.StructuredFF.time_structured_load((2, 2, 2), True)                                     |
|          | 165±2ms                      | 163±2ms                   | 0.98    | load.TimeConstraint.time_time_constraint(20, 'FF')                                          |
|          | 23.6±0.2ms                   | 24.5±0.4ms                | 1.04    | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                      |
|          | 179±0.9ms                    | 182±2ms                   | 1.01    | load.TimeConstraint.time_time_constraint(20, 'PP')                                          |
|          | 32.1±0.3ms                   | 31.8±0.4ms                | 0.99    | load.TimeConstraint.time_time_constraint(3, 'FF')                                           |
|          | 23.9±0.4ms                   | 24.1±0.3ms                | 1.01    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                       |
|          | 33.9±0.5ms                   | 34.1±0.2ms                | 1.01    | load.TimeConstraint.time_time_constraint(3, 'PP')                                           |
|          | 18.2±0.4ms                   | 18.5±0.7ms                | 1.01    | load.ugrid.BasicLoading.time_load_file(1)                                                   |
|          | 46.9±0.8ms                   | 48.7±1ms                  | 1.04    | load.ugrid.BasicLoading.time_load_file(200000)                                              |
|          | 15.1±0.6ms                   | 14.6±0.5ms                | 0.97    | load.ugrid.BasicLoading.time_load_mesh(1)                                                   |
|          | 25.6±1ms                     | 25.8±0.8ms                | 1.01    | load.ugrid.BasicLoading.time_load_mesh(200000)                                              |
|          | 18.0±0.5ms                   | 18.3±0.6ms                | 1.01    | load.ugrid.BasicLoadingTime.time_load_file(1)                                               |
|          | 23.2±0.3ms                   | 23.0±0.2ms                | 0.99    | load.ugrid.BasicLoadingTime.time_load_file(200000)                                          |
|          | 14.9±0.5ms                   | 14.9±0.4ms                | 1.00    | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                               |
|          | 19.3±0.5ms                   | 19.6±0.5ms                | 1.02    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                          |
|          | 19.0±0.3ms                   | 18.9±0.1ms                | 0.99    | load.ugrid.Callback.time_load_file_callback(1)                                              |
|          | 56.8±0.9ms                   | 57.6±1ms                  | 1.01    | load.ugrid.Callback.time_load_file_callback(200000)                                         |
|          | 18.9±0.6ms                   | 19.1±0.4ms                | 1.01    | load.ugrid.CallbackTime.time_load_file_callback(1)                                          |
|          | 24.8±0.7ms                   | 25.3±0.5ms                | 1.02    | load.ugrid.CallbackTime.time_load_file_callback(200000)                                     |
|          | 2.84±0.1ms                   | 2.86±0.2ms                | 1.01    | load.ugrid.DataRealisation.time_realise_data(10000)                                         |
|          | 4.85±1ms                     | 4.99±0.3ms                | 1.03    | load.ugrid.DataRealisation.time_realise_data(200000)                                        |
|          | 38.7±2ms                     | 40.0±2ms                  | 1.03    | load.ugrid.DataRealisationTime.time_realise_data(10000)                                     |
|          | 798±9ms                      | 806±7ms                   | 1.01    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                    |
|          | 433±3ms                      | 434±3ms                   | 1.00    | merge_concat.Concatenate.time_concatenate(False)                                            |
|          | 433±7ms                      | 433±8ms                   | 1.00    | merge_concat.Concatenate.time_concatenate(True)                                             |
|          | 109±0.09M                    | 109±4M                    | 1.00    | merge_concat.Concatenate.tracemalloc_concatenate(False)                                     |
|          | 109±0.09M                    | 109±0.3M                  | 1.00    | merge_concat.Concatenate.tracemalloc_concatenate(True)                                      |
|          | 58.6±0.9ms                   | 58.8±0.9ms                | 1.00    | merge_concat.Merge.time_merge                                                               |
|          | 1.13±0.3M                    | 758±300k                  | ~0.67   | merge_concat.Merge.tracemalloc_merge                                                        |
|          | 473±4ns                      | 489±3ns                   | 1.04    | mesh.utils.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)              |
|          | 257±3ms                      | 261±5ms                   | 1.02    | 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)      |
|          | 16.5±0.2ms                   | 16.6±0.2ms                | 1.01    | mesh.utils.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)           |
|          | 18.4±0.2ms                   | 18.5±0.2ms                | 1.01    | mesh.utils.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)          |
|          | 499±30k                      | 498±20k                   | 1.00    | mesh.utils.regions_combine.CombineRegionsCreateCube.tracemalloc_create_combined_cube(50)    |
|          | 12.4±0.03M                   | 12.4±0.02M                | 1.00    | mesh.utils.regions_combine.CombineRegionsCreateCube.tracemalloc_create_combined_cube(500)   |
|          | 117±1ms                      | 121±2ms                   | 1.03    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)         |
|          | 728±10ms                     | 742±8ms                   | 1.02    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)        |
|          | 1.24±0.03M                   | 1.24±0.03M                | 1.00    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.tracemalloc_stream_file2file(50)  |
|          | 96.3±0.04M                   | 96.3±0.02M                | 1.00    | mesh.utils.regions_combine.CombineRegionsFileStreamedCalc.tracemalloc_stream_file2file(500) |
|          | 78.3±1ms                     | 78.9±1ms                  | 1.01    | mesh.utils.regions_combine.CombineRegionsSaveData.time_save(50)                             |
|          | 687±6ms                      | 689±6ms                   | 1.00    | mesh.utils.regions_combine.CombineRegionsSaveData.time_save(500)                            |
|          | 1.18±0.01M                   | 1.17±0.02M                | 0.99    | mesh.utils.regions_combine.CombineRegionsSaveData.tracemalloc_save(50)                      |
|          | 96.2±0.01M                   | 96.2±0.01M                | 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)                 |
|          | 6.61±0.03ms                  | 6.63±0.07ms               | 1.00    | plot.AuxSort.time_aux_sort                                                                  |
|          | 82.5±2ms                     | 80.2±5ms                  | 0.97    | regridding.CurvilinearRegridding.time_regrid_pic                                            |
|          | 136±3M                       | 136±3M                    | 1.00    | regridding.CurvilinearRegridding.tracemalloc_regrid_pic                                     |
|          | 102±0.5ms                    | 102±0.6ms                 | 1.00    | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                   |
|          | 50.2±1ms                     | 51.2±3ms                  | 1.02    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                          |
|          | 106±0.05M                    | 106±0.04M                 | 1.00    | regridding.HorizontalChunkedRegridding.tracemalloc_regrid_area_w                            |
|          | 147±0.02M                    | 147±0.02M                 | 1.00    | regridding.HorizontalChunkedRegridding.tracemalloc_regrid_area_w_new_grid                   |
|          | 4.46±0.06ms                  | 4.49±0.06ms               | 1.01    | save.NetcdfSave.time_netcdf_save_cube(50, False)                                            |
|          | 80.7±0.9ms                   | 81.2±1ms                  | 1.01    | save.NetcdfSave.time_netcdf_save_cube(50, True)                                             |
|          | 54.6±1ms                     | 53.7±2ms                  | 0.98    | save.NetcdfSave.time_netcdf_save_cube(600, False)                                           |
|          | 591±5ms                      | 593±3ms                   | 1.00    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                            |
|          | 91.0±1ns                     | 91.8±2ns                  | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                            |
|          | 62.4±0.7ms                   | 62.3±1ms                  | 1.00    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                             |
|          | 89.4±1ns                     | 89.7±1ns                  | 1.00    | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                           |
|          | 520±3ms                      | 521±4ms                   | 1.00    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                            |
|          | 27.2±0.09k                   | 27.2±0.07k                | 1.00    | save.NetcdfSave.tracemalloc_netcdf_save(50, False)                                          |
|          | 1.61±0.1M                    | 1.7±0.05M                 | 1.06    | save.NetcdfSave.tracemalloc_netcdf_save(50, True)                                           |
|          | 27.2±0.06k                   | 27.2±0.1k                 | 1.00    | save.NetcdfSave.tracemalloc_netcdf_save(600, False)                                         |
|          | 207±20M                      | 216±20M                   | 1.04    | save.NetcdfSave.tracemalloc_netcdf_save(600, True)                                          |
|          | 47.3±1ms                     | 48.9±1ms                  | 1.03    | stats.PearsonR.time_lazy                                                                    |
|          | 18.9±0.3ms                   | 19.0±0.4ms                | 1.00    | stats.PearsonR.time_real                                                                    |
|          | 19.9±0.1M                    | 20±0.2M                   | 1.00    | stats.PearsonR.tracemalloc_lazy                                                             |
|          | 18.4±0.01M                   | 18.4±0.01M                | 1.00    | stats.PearsonR.tracemalloc_real                                                             |
|          | 28.0±0.9ms                   | 26.8±0.9ms                | 0.96    | trajectory.TrajectoryInterpolation.time_trajectory_linear                                   |
|          | 69.7±0.4ms                   | 69.4±0.6ms                | 1.00    | 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 [e8c826a1] <main~1>   | After [54f430bb] <main>   |   Ratio | Benchmark (Parameter)      |
|----------|------------------------------|---------------------------|---------|----------------------------|
| +        | 343±2μs                      | 1.90±0.02ms               |    5.53 | import_iris.Iris.time_plot |

Generated by GHA run 11336224597

[trexfeathers]

Expected