Performance Shift(s): c66703a0

[github-actions]

Benchmark comparison has identified performance shifts at:

• commit c66703a (Quieter datum warning #6050).

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

⏱️ Performance Benchmark Report: c66703a

Performance shifts

| Change   |   Before [17dd34a7] <main~1> |   After [c66703a0] <main> |   Ratio | Benchmark (Parameter)                                 |
|----------|------------------------------|---------------------------|---------|-------------------------------------------------------|
| +        |                        165.2 |                     231.1 |     1.4 | save.NetcdfSave.track_addedmem_netcdf_save(600, True) |

Full benchmark results

Benchmarks that have stayed the same:

| Change   | Before [17dd34a7] <main~1>   | After [c66703a0] <main>   | Ratio   | Benchmark (Parameter)                                                                                  |
|----------|------------------------------|---------------------------|---------|--------------------------------------------------------------------------------------------------------|
|          | 53.4±0.6ms                   | 53.6±0.8ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_COUNT(False)                                         |
|          | 54.1±0.4ms                   | 54.0±0.9ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_COUNT(True)                                          |
|          | 191±2ms                      | 191±3ms                   | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_FAST_PERCENTILE(False)                               |
|          | 190±2ms                      | 191±2ms                   | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_FAST_PERCENTILE(True)                                |
|          | 36.3±0.3ms                   | 36.4±0.5ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_GMEAN(False)                                         |
|          | 37.0±0.4ms                   | 36.8±0.3ms                | 0.99    | aggregate_collapse.Aggregation.time_aggregated_by_GMEAN(True)                                          |
|          | 36.3±0.3ms                   | 36.6±0.3ms                | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_HMEAN(False)                                         |
|          | 37.3±0.4ms                   | 37.2±0.8ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_HMEAN(True)                                          |
|          | 46.3±0.6ms                   | 46.7±0.8ms                | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MAX(False)                                           |
|          | 47.0±0.5ms                   | 47.4±0.7ms                | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MAX(True)                                            |
|          | 120±0.9ms                    | 121±2ms                   | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_MAX_RUN(False)                                       |
|          | 121±1ms                      | 122±2ms                   | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MAX_RUN(True)                                        |
|          | 50.7±0.6ms                   | 51.2±0.8ms                | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MEAN(False)                                          |
|          | 51.4±0.7ms                   | 51.6±0.9ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_MEAN(True)                                           |
|          | 36.2±0.5ms                   | 36.1±0.6ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_MEDIAN(False)                                        |
|          | 37.3±0.3ms                   | 36.8±0.7ms                | 0.99    | aggregate_collapse.Aggregation.time_aggregated_by_MEDIAN(True)                                         |
|          | 46.4±0.6ms                   | 46.8±0.8ms                | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_MIN(False)                                           |
|          | 47.2±0.8ms                   | 47.0±0.7ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_MIN(True)                                            |
|          | 1.32±0.02s                   | 1.32±0.01s                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(False)                                          |
|          | 1.32±0.01s                   | 1.32±0.01s                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_PEAK(True)                                           |
|          | 679±10ms                     | 687±10ms                  | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(False)                                    |
|          | 687±10ms                     | 676±10ms                  | 0.98    | aggregate_collapse.Aggregation.time_aggregated_by_PERCENTILE(True)                                     |
|          | 34.8±0.3ms                   | 34.7±0.6ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_PROPORTION(False)                                    |
|          | 35.4±0.3ms                   | 35.8±0.4ms                | 1.01    | aggregate_collapse.Aggregation.time_aggregated_by_PROPORTION(True)                                     |
|          | 61.6±0.6ms                   | 61.8±1ms                  | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_RMS(False)                                           |
|          | 62.2±0.8ms                   | 62.3±0.9ms                | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_RMS(True)                                            |
|          | 66.1±0.4ms                   | 65.7±1ms                  | 0.99    | aggregate_collapse.Aggregation.time_aggregated_by_STD_DEV(False)                                       |
|          | 66.5±0.7ms                   | 66.7±1ms                  | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_STD_DEV(True)                                        |
|          | 61.1±0.6ms                   | 61.2±1ms                  | 1.00    | aggregate_collapse.Aggregation.time_aggregated_by_VARIANCE(False)                                      |
|          | 62.1±0.6ms                   | 61.7±0.7ms                | 0.99    | aggregate_collapse.Aggregation.time_aggregated_by_VARIANCE(True)                                       |
|          | 19.6±0.6ms                   | 19.8±0.4ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(False)                                          |
|          | 23.3±0.4ms                   | 23.1±0.8ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_COUNT(True)                                           |
|          | 130±1ms                      | 130±1ms                   | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_FAST_PERCENTILE(False)                                |
|          | 144±1ms                      | 145±1ms                   | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_FAST_PERCENTILE(True)                                 |
|          | 18.1±0.4ms                   | 18.0±0.5ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(False)                                          |
|          | 21.8±0.4ms                   | 21.7±0.7ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_GMEAN(True)                                           |
|          | 18.1±0.3ms                   | 17.9±0.7ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(False)                                          |
|          | 21.5±0.3ms                   | 21.7±0.5ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_HMEAN(True)                                           |
|          | 18.4±0.3ms                   | 18.6±0.4ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_MAX(False)                                            |
|          | 22.2±0.2ms                   | 22.7±0.6ms                | 1.02    | aggregate_collapse.Aggregation.time_collapsed_by_MAX(True)                                             |
|          | 34.5±0.3ms                   | 34.0±1ms                  | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_MAX_RUN(False)                                        |
|          | 37.5±1ms                     | 37.9±0.9ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_MAX_RUN(True)                                         |
|          | 19.0±0.4ms                   | 19.2±0.7ms                | 1.02    | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(False)                                           |
|          | 22.5±0.2ms                   | 22.6±0.6ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_MEAN(True)                                            |
|          | 18.5±0.2ms                   | 18.6±0.6ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(False)                                         |
|          | 22.0±0.2ms                   | 22.3±0.7ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_MEDIAN(True)                                          |
|          | 18.5±0.2ms                   | 18.5±0.5ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_MIN(False)                                            |
|          | 21.9±0.3ms                   | 22.1±0.6ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_MIN(True)                                             |
|          | 550±4ms                      | 561±4ms                   | 1.02    | aggregate_collapse.Aggregation.time_collapsed_by_PEAK(False)                                           |
|          | 556±3ms                      | 553±3ms                   | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_PEAK(True)                                            |
|          | 149±2ms                      | 149±2ms                   | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_PERCENTILE(False)                                     |
|          | 167±1ms                      | 168±2ms                   | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_PERCENTILE(True)                                      |
|          | 17.9±0.6ms                   | 18.1±0.5ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(False)                                     |
|          | 21.2±0.7ms                   | 21.8±0.9ms                | 1.03    | aggregate_collapse.Aggregation.time_collapsed_by_PROPORTION(True)                                      |
|          | 21.0±0.6ms                   | 21.1±0.4ms                | 1.01    | aggregate_collapse.Aggregation.time_collapsed_by_RMS(False)                                            |
|          | 24.9±0.3ms                   | 24.9±1ms                  | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_RMS(True)                                             |
|          | 20.7±0.4ms                   | 21.1±0.6ms                | 1.02    | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(False)                                        |
|          | 24.6±0.4ms                   | 24.8±0.4ms                | 1.00    | aggregate_collapse.Aggregation.time_collapsed_by_STD_DEV(True)                                         |
|          | 20.7±0.3ms                   | 20.4±0.6ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(False)                                       |
|          | 24.2±0.3ms                   | 24.0±0.7ms                | 0.99    | aggregate_collapse.Aggregation.time_collapsed_by_VARIANCE(True)                                        |
|          | 82.8±1ms                     | 82.7±1ms                  | 1.00    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_MEAN(False)                                |
|          | 83.5±0.8ms                   | 82.8±1ms                  | 0.99    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_MEAN(True)                                 |
|          | 94.4±1ms                     | 95.6±2ms                  | 1.01    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_RMS(False)                                 |
|          | 95.3±0.9ms                   | 95.7±1ms                  | 1.00    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_RMS(True)                                  |
|          | 57.9±0.7ms                   | 57.7±1ms                  | 1.00    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_SUM(False)                                 |
|          | 58.6±0.8ms                   | 58.8±1ms                  | 1.00    | aggregate_collapse.WeightedAggregation.time_w_aggregated_by_SUM(True)                                  |
|          | 29.2±0.6ms                   | 28.9±0.3ms                | 0.99    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_MEAN(False)                                 |
|          | 32.8±0.5ms                   | 32.7±0.4ms                | 1.00    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_MEAN(True)                                  |
|          | 30.7±0.2ms                   | 31.0±0.5ms                | 1.01    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_RMS(False)                                  |
|          | 34.7±0.4ms                   | 34.5±0.7ms                | 1.00    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_RMS(True)                                   |
|          | 25.6±0.1ms                   | 25.6±0.3ms                | 1.00    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_SUM(False)                                  |
|          | 29.4±0.3ms                   | 29.3±0.2ms                | 1.00    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_SUM(True)                                   |
|          | 321±3ms                      | 327±7ms                   | 1.02    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_WPERCENTILE(False)                          |
|          | 343±3ms                      | 345±5ms                   | 1.01    | aggregate_collapse.WeightedAggregation.time_w_collapsed_by_WPERCENTILE(True)                           |
|          | 1.12±0.01ms                  | 1.10±0.03ms               | 0.98    | cube.CubeCreation.time_create(False, 'construct')                                                      |
|          | 397±4μs                      | 393±10μs                  | 0.99    | cube.CubeCreation.time_create(False, 'instantiate')                                                    |
|          | 963±10μs                     | 959±20μs                  | 1.00    | cube.CubeCreation.time_create(True, 'construct')                                                       |
|          | 578±6μs                      | 581±10μs                  | 1.00    | cube.CubeCreation.time_create(True, 'instantiate')                                                     |
|          | 223±4ms                      | 221±2ms                   | 0.99    | cube.CubeEquality.time_equality(False, False, 'all_equal')                                             |
|          | 111±1ms                      | 113±2ms                   | 1.01    | cube.CubeEquality.time_equality(False, False, 'coord_inequality')                                      |
|          | 231±4ms                      | 232±2ms                   | 1.00    | cube.CubeEquality.time_equality(False, False, 'data_inequality')                                       |
|          | 16.4±0.2μs                   | 16.6±0.7μs                | 1.01    | cube.CubeEquality.time_equality(False, False, 'metadata_inequality')                                   |
|          | 307±5ms                      | 309±5ms                   | 1.01    | cube.CubeEquality.time_equality(False, True, 'all_equal')                                              |
|          | 199±2ms                      | 199±1ms                   | 1.00    | cube.CubeEquality.time_equality(False, True, 'coord_inequality')                                       |
|          | 317±4ms                      | 318±3ms                   | 1.00    | cube.CubeEquality.time_equality(False, True, 'data_inequality')                                        |
|          | 16.5±0.2μs                   | 16.6±0.5μs                | 1.01    | cube.CubeEquality.time_equality(False, True, 'metadata_inequality')                                    |
|          | 222±3ms                      | 223±2ms                   | 1.00    | cube.CubeEquality.time_equality(True, False, 'all_equal')                                              |
|          | 112±0.9ms                    | 113±2ms                   | 1.01    | cube.CubeEquality.time_equality(True, False, 'coord_inequality')                                       |
|          | 232±3ms                      | 232±3ms                   | 1.00    | cube.CubeEquality.time_equality(True, False, 'data_inequality')                                        |
|          | 53.2±0.4μs                   | 53.3±2μs                  | 1.00    | cube.CubeEquality.time_equality(True, False, 'metadata_inequality')                                    |
|          | 310±2ms                      | 309±4ms                   | 1.00    | cube.CubeEquality.time_equality(True, True, 'all_equal')                                               |
|          | 199±2ms                      | 200±3ms                   | 1.00    | cube.CubeEquality.time_equality(True, True, 'coord_inequality')                                        |
|          | 316±3ms                      | 319±3ms                   | 1.01    | cube.CubeEquality.time_equality(True, True, 'data_inequality')                                         |
|          | 54.6±0.7μs                   | 54.9±3μs                  | 1.00    | cube.CubeEquality.time_equality(True, True, 'metadata_inequality')                                     |
|          | 435±30ns                     | 403±3ns                   | 0.93    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(50)                 |
|          | 279±4ms                      | 279±2ms                   | 1.00    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.time_compute_data(500)                |
|          | 0.6                          | 0.6                       | 1.00    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.track_addedmem_compute_data(50)       |
|          | 57.3                         | 57.3                      | 1.00    | experimental.ugrid.regions_combine.CombineRegionsComputeRealData.track_addedmem_compute_data(500)      |
|          | 14.2±0.07ms                  | 14.4±0.3ms                | 1.01    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(50)              |
|          | 16.0±0.09ms                  | 16.2±0.4ms                | 1.01    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.time_create_combined_cube(500)             |
|          | 0.5                          | 0.5                       | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(50)    |
|          | 11.8                         | 11.8                      | 1.00    | experimental.ugrid.regions_combine.CombineRegionsCreateCube.track_addedmem_create_combined_cube(500)   |
|          | 105±0.4ms                    | 106±2ms                   | 1.01    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(50)            |
|          | 725±5ms                      | 725±6ms                   | 1.00    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.time_stream_file2file(500)           |
|          | 1.4                          | 1.4                       | 1.00    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.track_addedmem_stream_file2file(50)  |
|          | 92.0                         | 92.0                      | 1.00    | experimental.ugrid.regions_combine.CombineRegionsFileStreamedCalc.track_addedmem_stream_file2file(500) |
|          | 66.9±0.8ms                   | 66.1±0.3ms                | 0.99    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(50)                                |
|          | 681±5ms                      | 674±4ms                   | 0.99    | experimental.ugrid.regions_combine.CombineRegionsSaveData.time_save(500)                               |
|          | 1.3                          | 1.3                       | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_addedmem_save(50)                      |
|          | 92.0                         | 92.0                      | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_addedmem_save(500)                     |
|          | 2.1752849999999997           | 2.1752849999999997        | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(50)                     |
|          | 216.01528499999998           | 216.01528499999998        | 1.00    | experimental.ugrid.regions_combine.CombineRegionsSaveData.track_filesize_saved(500)                    |
|          | 659±10μs                     | 667±10μs                  | 1.01    | import_iris.Iris.time__concatenate                                                                     |
|          | 181±1μs                      | 181±2μs                   | 1.00    | import_iris.Iris.time__constraints                                                                     |
|          | 111±0.9μs                    | 112±3μs                   | 1.00    | import_iris.Iris.time__data_manager                                                                    |
|          | 93.3±0.4μs                   | 93.6±1μs                  | 1.00    | import_iris.Iris.time__deprecation                                                                     |
|          | 139±0.6μs                    | 141±2μs                   | 1.01    | import_iris.Iris.time__lazy_data                                                                       |
|          | 899±5μs                      | 904±20μs                  | 1.01    | import_iris.Iris.time__merge                                                                           |
|          | 77.0±1μs                     | 76.6±1μs                  | 1.00    | import_iris.Iris.time__representation                                                                  |
|          | 487±2μs                      | 483±9μs                   | 0.99    | import_iris.Iris.time_analysis                                                                         |
|          | 141±1μs                      | 141±2μs                   | 1.01    | import_iris.Iris.time_analysis__area_weighted                                                          |
|          | 111±2μs                      | 111±1μs                   | 1.00    | import_iris.Iris.time_analysis__grid_angles                                                            |
|          | 244±5μs                      | 244±3μs                   | 1.00    | import_iris.Iris.time_analysis__interpolation                                                          |
|          | 187±2μs                      | 189±3μs                   | 1.01    | import_iris.Iris.time_analysis__regrid                                                                 |
|          | 112±0.7μs                    | 112±2μs                   | 1.00    | import_iris.Iris.time_analysis__scipy_interpolate                                                      |
|          | 142±3μs                      | 141±3μs                   | 1.00    | import_iris.Iris.time_analysis_calculus                                                                |
|          | 330±4μs                      | 334±3μs                   | 1.01    | import_iris.Iris.time_analysis_cartography                                                             |
|          | 95.4±1μs                     | 94.0±2μs                  | 0.99    | import_iris.Iris.time_analysis_geomerty                                                                |
|          | 224±6μs                      | 219±3μs                   | 0.98    | import_iris.Iris.time_analysis_maths                                                                   |
|          | 97.3±0.9μs                   | 98.8±2μs                  | 1.02    | import_iris.Iris.time_analysis_stats                                                                   |
|          | 175±3μs                      | 177±2μs                   | 1.01    | import_iris.Iris.time_analysis_trajectory                                                              |
|          | 308±2μs                      | 307±5μs                   | 1.00    | import_iris.Iris.time_aux_factory                                                                      |
|          | 83.0±1μs                     | 85.7±2μs                  | 1.03    | import_iris.Iris.time_common                                                                           |
|          | 163±1μs                      | 164±2μs                   | 1.00    | import_iris.Iris.time_common_lenient                                                                   |
|          | 995±8μs                      | 986±10μs                  | 0.99    | import_iris.Iris.time_common_metadata                                                                  |
|          | 133±2μs                      | 135±2μs                   | 1.01    | import_iris.Iris.time_common_mixin                                                                     |
|          | 1.19±0ms                     | 1.18±0.01ms               | 0.99    | import_iris.Iris.time_common_resolve                                                                   |
|          | 199±2μs                      | 204±3μs                   | 1.02    | import_iris.Iris.time_config                                                                           |
|          | 116±1μs                      | 118±2μs                   | 1.02    | import_iris.Iris.time_coord_categorisation                                                             |
|          | 363±2μs                      | 368±4μs                   | 1.01    | import_iris.Iris.time_coord_systems                                                                    |
|          | 745±2μs                      | 748±9μs                   | 1.01    | import_iris.Iris.time_coords                                                                           |
|          | 667±5μs                      | 660±10μs                  | 0.99    | import_iris.Iris.time_cube                                                                             |
|          | 226±2μs                      | 226±8μs                   | 1.00    | import_iris.Iris.time_exceptions                                                                       |
|          | 77.5±0.3μs                   | 77.3±2μs                  | 1.00    | import_iris.Iris.time_experimental                                                                     |
|          | 187±2μs                      | 192±4μs                   | 1.03    | import_iris.Iris.time_fileformats                                                                      |
|          | 250±3μs                      | 266±20μs                  | 1.06    | import_iris.Iris.time_fileformats__ff                                                                  |
|          | 2.70±0.01ms                  | 2.70±0.09ms               | 1.00    | import_iris.Iris.time_fileformats__ff_cross_references                                                 |
|          | 78.2±0.8μs                   | 80.5±2μs                  | 1.03    | import_iris.Iris.time_fileformats__pp_lbproc_pairs                                                     |
|          | 115±0.7μs                    | 114±3μs                   | 0.99    | import_iris.Iris.time_fileformats_abf                                                                  |
|          | 370±8μs                      | 363±5μs                   | 0.98    | import_iris.Iris.time_fileformats_cf                                                                   |
|          | 5.34±0.06ms                  | 5.37±0.08ms               | 1.01    | import_iris.Iris.time_fileformats_dot                                                                  |
|          | 74.6±1μs                     | 75.5±2μs                  | 1.01    | import_iris.Iris.time_fileformats_name                                                                 |
|          | 257±2μs                      | 260±5μs                   | 1.01    | import_iris.Iris.time_fileformats_name_loaders                                                         |
|          | 118±1μs                      | 119±3μs                   | 1.01    | import_iris.Iris.time_fileformats_netcdf                                                               |
|          | 123±0.8μs                    | 123±2μs                   | 1.00    | import_iris.Iris.time_fileformats_nimrod                                                               |
|          | 217±3μs                      | 215±4μs                   | 0.99    | import_iris.Iris.time_fileformats_nimrod_load_rules                                                    |
|          | 788±3μs                      | 791±10μs                  | 1.00    | import_iris.Iris.time_fileformats_pp                                                                   |
|          | 184±1μs                      | 183±4μs                   | 0.99    | import_iris.Iris.time_fileformats_pp_load_rules                                                        |
|          | 136±1μs                      | 137±2μs                   | 1.01    | import_iris.Iris.time_fileformats_pp_save_rules                                                        |
|          | 514±3μs                      | 513±6μs                   | 1.00    | import_iris.Iris.time_fileformats_rules                                                                |
|          | 218±2μs                      | 219±3μs                   | 1.00    | import_iris.Iris.time_fileformats_structured_array_identification                                      |
|          | 83.0±0.6μs                   | 83.1±0.9μs                | 1.00    | import_iris.Iris.time_fileformats_um                                                                   |
|          | 164±2μs                      | 163±2μs                   | 1.00    | import_iris.Iris.time_fileformats_um__fast_load                                                        |
|          | 137±1μs                      | 138±0.7μs                 | 1.01    | import_iris.Iris.time_fileformats_um__fast_load_structured_fields                                      |
|          | 75.8±0.6μs                   | 76.2±0.6μs                | 1.01    | import_iris.Iris.time_fileformats_um__ff_replacement                                                   |
|          | 81.5±0.3μs                   | 83.1±1μs                  | 1.02    | import_iris.Iris.time_fileformats_um__optimal_array_structuring                                        |
|          | 987±10μs                     | 979±20μs                  | 0.99    | import_iris.Iris.time_fileformats_um_cf_map                                                            |
|          | 136±0.4μs                    | 138±1μs                   | 1.02    | import_iris.Iris.time_io                                                                               |
|          | 173±1μs                      | 174±0.7μs                 | 1.01    | import_iris.Iris.time_io_format_picker                                                                 |
|          | 231±4μs                      | 232±3μs                   | 1.00    | import_iris.Iris.time_iris                                                                             |
|          | 127±1μs                      | 130±2μs                   | 1.02    | import_iris.Iris.time_iterate                                                                          |
|          | 8.38±0.06ms                  | 8.47±0.07ms               | 1.01    | import_iris.Iris.time_palette                                                                          |
|          | 2.23±0.04ms                  | 2.24±0.04ms               | 1.01    | import_iris.Iris.time_plot                                                                             |
|          | 105±0.7μs                    | 106±1μs                   | 1.00    | import_iris.Iris.time_quickplot                                                                        |
|          | 2.16±0.02ms                  | 2.14±0.05ms               | 0.99    | import_iris.Iris.time_std_names                                                                        |
|          | 1.76±0.02ms                  | 1.77±0.02ms               | 1.00    | import_iris.Iris.time_symbols                                                                          |
|          | 15.4±0.9ms                   | 15.2±0.6ms                | 0.99    | import_iris.Iris.time_tests                                                                            |
|          | 256±3μs                      | 257±7μs                   | 1.00    | import_iris.Iris.time_third_party_cartopy                                                              |
|          | 4.83±0.02ms                  | 4.80±0.02ms               | 0.99    | import_iris.Iris.time_third_party_cf_units                                                             |
|          | 118±2μs                      | 123±4μs                   | 1.05    | import_iris.Iris.time_third_party_cftime                                                               |
|          | 2.78±0.02ms                  | 2.79±0.05ms               | 1.00    | import_iris.Iris.time_third_party_matplotlib                                                           |
|          | 1.07±0.01ms                  | 1.07±0.02ms               | 1.01    | import_iris.Iris.time_third_party_numpy                                                                |
|          | 170±1μs                      | 172±4μs                   | 1.01    | import_iris.Iris.time_third_party_scipy                                                                |
|          | 98.8±0.7μs                   | 101±2μs                   | 1.02    | import_iris.Iris.time_time                                                                             |
|          | 326±2μs                      | 326±7μs                   | 1.00    | import_iris.Iris.time_util                                                                             |
|          | 75.0±0.7μs                   | 74.6±2μs                  | 1.00    | iterate.IZip.time_izip                                                                                 |
|          | 8.03±0.07ms                  | 8.15±0.1ms                | 1.01    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'FF')                                             |
|          | 23.2±0.3ms                   | 23.6±0.5ms                | 1.02    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'NetCDF')                                         |
|          | 8.89±0.08ms                  | 9.05±0.2ms                | 1.02    | load.LoadAndRealise.time_load((1280, 960, 5), False, 'PP')                                             |
|          | 8.00±0.06ms                  | 8.04±0.1ms                | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'FF')                                              |
|          | 21.0±0.1ms                   | 21.0±0.5ms                | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'NetCDF')                                          |
|          | 8.88±0.06ms                  | 8.88±0.08ms               | 1.00    | load.LoadAndRealise.time_load((1280, 960, 5), True, 'PP')                                              |
|          | 1.35±0.01s                   | 1.37±0.02s                | 1.02    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'FF')                                               |
|          | 20.9±0.3ms                   | 20.8±0.6ms                | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'NetCDF')                                           |
|          | 1.52±0.02s                   | 1.52±0.02s                | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), False, 'PP')                                               |
|          | 1.35±0.01s                   | 1.36±0.02s                | 1.01    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'FF')                                                |
|          | 20.6±0.2ms                   | 20.5±0.5ms                | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'NetCDF')                                            |
|          | 1.51±0.01s                   | 1.50±0.02s                | 1.00    | load.LoadAndRealise.time_load((2, 2, 1000), True, 'PP')                                                |
|          | 3.88±0.01ms                  | 3.86±0.07ms               | 1.00    | load.LoadAndRealise.time_load((50, 50, 2), False, 'FF')                                                |
|          | 19.6±0.2ms                   | 20.0±0.5ms                | 1.02    | load.LoadAndRealise.time_load((50, 50, 2), False, 'NetCDF')                                            |
|          | 4.18±0.04ms                  | 4.24±0.07ms               | 1.01    | load.LoadAndRealise.time_load((50, 50, 2), False, 'PP')                                                |
|          | 3.88±0.03ms                  | 3.91±0.06ms               | 1.01    | load.LoadAndRealise.time_load((50, 50, 2), True, 'FF')                                                 |
|          | 19.7±0.2ms                   | 20.2±0.3ms                | 1.02    | load.LoadAndRealise.time_load((50, 50, 2), True, 'NetCDF')                                             |
|          | 4.18±0.03ms                  | 4.28±0.05ms               | 1.03    | load.LoadAndRealise.time_load((50, 50, 2), True, 'PP')                                                 |
|          | 32.7±3ms                     | 33.3±3ms                  | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'FF')                                          |
|          | 19.3±0.5ms                   | 19.8±0.2ms                | 1.02    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'NetCDF')                                      |
|          | 13.3±1ms                     | 13.4±1ms                  | 1.01    | load.LoadAndRealise.time_realise((1280, 960, 5), False, 'PP')                                          |
|          | 25.6±0.6ms                   | 25.7±2ms                  | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'FF')                                           |
|          | 70.6±2ms                     | 70.5±2ms                  | 1.00    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'NetCDF')                                       |
|          | 25.5±0.7ms                   | 25.7±2ms                  | 1.01    | load.LoadAndRealise.time_realise((1280, 960, 5), True, 'PP')                                           |
|          | 436±3ms                      | 438±5ms                   | 1.00    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'FF')                                            |
|          | 2.87±0.07ms                  | 2.79±0.08ms               | 0.97    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'NetCDF')                                        |
|          | 442±2ms                      | 443±6ms                   | 1.00    | load.LoadAndRealise.time_realise((2, 2, 1000), False, 'PP')                                            |
|          | 440±2ms                      | 443±4ms                   | 1.01    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'FF')                                             |
|          | 2.86±0.07ms                  | 2.81±0.2ms                | 0.98    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'NetCDF')                                         |
|          | 447±3ms                      | 447±6ms                   | 1.00    | load.LoadAndRealise.time_realise((2, 2, 1000), True, 'PP')                                             |
|          | 1.57±0.09ms                  | 1.57±0.08ms               | 1.00    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'FF')                                             |
|          | 2.83±0.07ms                  | 2.85±0.1ms                | 1.01    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'NetCDF')                                         |
|          | 1.54±0.08ms                  | 1.59±0.05ms               | 1.04    | load.LoadAndRealise.time_realise((50, 50, 2), False, 'PP')                                             |
|          | 1.56±0.07ms                  | 1.59±0.1ms                | 1.02    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'FF')                                              |
|          | 2.91±0.09ms                  | 2.81±0.1ms                | 0.96    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'NetCDF')                                          |
|          | 1.56±0.08ms                  | 1.61±0.1ms                | 1.03    | load.LoadAndRealise.time_realise((50, 50, 2), True, 'PP')                                              |
|          | 357±2ms                      | 359±8ms                   | 1.01    | load.ManyVars.time_many_var_load                                                                       |
|          | 8.19±0.07ms                  | 8.18±0.08ms               | 1.00    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'FF')                                       |
|          | 9.02±0.08ms                  | 9.22±0.2ms                | 1.02    | load.STASHConstraint.time_stash_constraint((1280, 960, 5), 'PP')                                       |
|          | 1.35±0.01s                   | 1.37±0.03s                | 1.01    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'FF')                                         |
|          | 1.53±0.01s                   | 1.52±0.02s                | 1.00    | load.STASHConstraint.time_stash_constraint((2, 2, 1000), 'PP')                                         |
|          | 3.94±0.02ms                  | 3.94±0.1ms                | 1.00    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'FF')                                            |
|          | 4.22±0.02ms                  | 4.21±0.07ms               | 1.00    | load.STASHConstraint.time_stash_constraint((2, 2, 2), 'PP')                                            |
|          | 8.08±0.04ms                  | 8.04±0.1ms                | 0.99    | load.StructuredFF.time_structured_load((1280, 960, 5), False)                                          |
|          | 4.72±0.02ms                  | 4.68±0.06ms               | 0.99    | load.StructuredFF.time_structured_load((1280, 960, 5), True)                                           |
|          | 1.34±0.01s                   | 1.35±0.02s                | 1.01    | load.StructuredFF.time_structured_load((2, 2, 1000), False)                                            |
|          | 364±5ms                      | 365±8ms                   | 1.00    | load.StructuredFF.time_structured_load((2, 2, 1000), True)                                             |
|          | 3.91±0.02ms                  | 3.94±0.08ms               | 1.01    | load.StructuredFF.time_structured_load((2, 2, 2), False)                                               |
|          | 3.56±0.04ms                  | 3.61±0.07ms               | 1.01    | load.StructuredFF.time_structured_load((2, 2, 2), True)                                                |
|          | 142±0.6ms                    | 145±3ms                   | 1.02    | load.TimeConstraint.time_time_constraint(20, 'FF')                                                     |
|          | 22.9±0.2ms                   | 23.5±0.6ms                | 1.03    | load.TimeConstraint.time_time_constraint(20, 'NetCDF')                                                 |
|          | 159±1ms                      | 159±2ms                   | 1.00    | load.TimeConstraint.time_time_constraint(20, 'PP')                                                     |
|          | 28.8±0.4ms                   | 29.4±0.8ms                | 1.02    | load.TimeConstraint.time_time_constraint(3, 'FF')                                                      |
|          | 22.5±0.2ms                   | 23.1±0.4ms                | 1.03    | load.TimeConstraint.time_time_constraint(3, 'NetCDF')                                                  |
|          | 30.9±0.1ms                   | 31.0±0.5ms                | 1.00    | load.TimeConstraint.time_time_constraint(3, 'PP')                                                      |
|          | 17.4±0.3ms                   | 17.7±0.5ms                | 1.02    | load.ugrid.BasicLoading.time_load_file(1)                                                              |
|          | 40.8±0.4ms                   | 40.4±1ms                  | 0.99    | load.ugrid.BasicLoading.time_load_file(200000)                                                         |
|          | 13.9±0.06ms                  | 14.0±0.7ms                | 1.01    | load.ugrid.BasicLoading.time_load_mesh(1)                                                              |
|          | 21.9±0.6ms                   | 22.1±0.9ms                | 1.01    | load.ugrid.BasicLoading.time_load_mesh(200000)                                                         |
|          | 17.2±0.3ms                   | 17.6±0.6ms                | 1.02    | load.ugrid.BasicLoadingTime.time_load_file(1)                                                          |
|          | 20.2±0.3ms                   | 20.9±0.7ms                | 1.04    | load.ugrid.BasicLoadingTime.time_load_file(200000)                                                     |
|          | 13.9±0.2ms                   | 14.2±0.8ms                | 1.02    | load.ugrid.BasicLoadingTime.time_load_mesh(1)                                                          |
|          | 16.4±0.3ms                   | 16.9±0.7ms                | 1.03    | load.ugrid.BasicLoadingTime.time_load_mesh(200000)                                                     |
|          | 18.3±0.4ms                   | 19.0±0.6ms                | 1.04    | load.ugrid.Callback.time_load_file_callback(1)                                                         |
|          | 50.2±0.2ms                   | 50.8±1ms                  | 1.01    | load.ugrid.Callback.time_load_file_callback(200000)                                                    |
|          | 18.1±0.3ms                   | 18.6±0.8ms                | 1.02    | load.ugrid.CallbackTime.time_load_file_callback(1)                                                     |
|          | 21.5±0.2ms                   | 21.8±0.9ms                | 1.01    | load.ugrid.CallbackTime.time_load_file_callback(200000)                                                |
|          | 2.70±0.07ms                  | 2.77±0.1ms                | 1.03    | load.ugrid.DataRealisation.time_realise_data(10000)                                                    |
|          | 5.39±0.9ms                   | 4.28±0.9ms                | ~0.79   | load.ugrid.DataRealisation.time_realise_data(200000)                                                   |
|          | 37.6±0.7ms                   | 37.7±0.7ms                | 1.00    | load.ugrid.DataRealisationTime.time_realise_data(10000)                                                |
|          | 808±7ms                      | 809±6ms                   | 1.00    | load.ugrid.DataRealisationTime.time_realise_data(200000)                                               |
|          | 119±2ms                      | 119±1ms                   | 1.00    | merge_concat.Concatenate.time_concatenate                                                              |
|          | 24.1                         | 23.9                      | 0.99    | merge_concat.Concatenate.track_mem_merge                                                               |
|          | 47.5±0.2ms                   | 48.0±1ms                  | 1.01    | merge_concat.Merge.time_merge                                                                          |
|          | 10.9                         | 10.9                      | 1.00    | merge_concat.Merge.track_mem_merge                                                                     |
|          | 6.52±0.04ms                  | 6.54±0.08ms               | 1.00    | plot.AuxSort.time_aux_sort                                                                             |
|          | 77.2±3ms                     | 78.4±5ms                  | 1.02    | regridding.CurvilinearRegridding.time_regrid_pic                                                       |
|          | 144.8                        | 144.8                     | 1.00    | regridding.CurvilinearRegridding.track_mem_regrid_pic                                                  |
|          | 98.0±0.7ms                   | 98.8±0.7ms                | 1.01    | regridding.HorizontalChunkedRegridding.time_regrid_area_w                                              |
|          | 48.9±1ms                     | 48.6±2ms                  | 1.00    | regridding.HorizontalChunkedRegridding.time_regrid_area_w_new_grid                                     |
|          | 111.5                        | 111.6                     | 1.00    | regridding.HorizontalChunkedRegridding.track_mem_regrid_area_w                                         |
|          | 150.6                        | 150.6                     | 1.00    | regridding.HorizontalChunkedRegridding.track_mem_regrid_area_w_new_grid                                |
|          | 4.04±0.02ms                  | 4.03±0.03ms               | 1.00    | save.NetcdfSave.time_netcdf_save_cube(50, False)                                                       |
|          | 71.5±0.6ms                   | 71.4±0.5ms                | 1.00    | save.NetcdfSave.time_netcdf_save_cube(50, True)                                                        |
|          | 52.1±2ms                     | 51.3±0.5ms                | 0.99    | save.NetcdfSave.time_netcdf_save_cube(600, False)                                                      |
|          | 566±4ms                      | 563±6ms                   | 0.99    | save.NetcdfSave.time_netcdf_save_cube(600, True)                                                       |
|          | 90.2±8ns                     | 90.6±3ns                  | 1.00    | save.NetcdfSave.time_netcdf_save_mesh(50, False)                                                       |
|          | 54.7±0.2ms                   | 54.5±0.3ms                | 1.00    | save.NetcdfSave.time_netcdf_save_mesh(50, True)                                                        |
|          | 90.4±7ns                     | 90.8±1ns                  | 1.01    | save.NetcdfSave.time_netcdf_save_mesh(600, False)                                                      |
|          | 498±4ms                      | 495±2ms                   | 0.99    | save.NetcdfSave.time_netcdf_save_mesh(600, True)                                                       |
|          | 0.3                          | 0.3                       | 1.00    | save.NetcdfSave.track_addedmem_netcdf_save(50, False)                                                  |
|          | 2.1                          | 1.9                       | 0.90    | save.NetcdfSave.track_addedmem_netcdf_save(50, True)                                                   |
|          | 0.3                          | 0.3                       | 1.00    | save.NetcdfSave.track_addedmem_netcdf_save(600, False)                                                 |
|          | 42.9±2ms                     | 42.7±1ms                  | 0.99    | stats.PearsonR.time_lazy                                                                               |
|          | 19.0±0.3ms                   | 18.9±0.4ms                | 1.00    | stats.PearsonR.time_real                                                                               |
|          | 19.5                         | 19.5                      | 1.00    | stats.PearsonR.track_lazy                                                                              |
|          | 17.8                         | 17.8                      | 1.00    | stats.PearsonR.track_real                                                                              |
|          | 23.2±0.9ms                   | 23.0±0.4ms                | 0.99    | trajectory.TrajectoryInterpolation.time_trajectory_linear                                              |
|          | 60.5±0.5ms                   | 61.0±0.7ms                | 1.01    | trajectory.TrajectoryInterpolation.time_trajectory_nearest                                             |
|          | 32.2                         | 32.1                      | 1.00    | trajectory.TrajectoryInterpolation.track_trajectory_linear                                             |
|          | 21.6                         | 21.6                      | 1.00    | trajectory.TrajectoryInterpolation.track_trajectory_nearest                                            |

Benchmarks that have got worse:

| Change   |   Before [17dd34a7] <main~1> |   After [c66703a0] <main> |   Ratio | Benchmark (Parameter)                                 |
|----------|------------------------------|---------------------------|---------|-------------------------------------------------------|
| +        |                        165.2 |                     231.1 |     1.4 | save.NetcdfSave.track_addedmem_netcdf_save(600, True) |

Generated by GHA run 9982641813