issue_comments: 1547017905

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https://github.com/pydata/xarray/pull/7824#issuecomment-1547017905 https://api.github.com/repos/pydata/xarray/issues/7824 1547017905 IC_kwDOAMm_X85cNZ6x 14371165 2023-05-14T22:44:06Z 2023-05-15T08:40:51Z MEMBER

Think I'll stop here.

@alimanfoo, feel free to try this out if you have the time.

Results: ``` before after ratio [964d350a] [86ef9540] - 117±2ms 65.6±0.9ms 0.56 groupby.Resample.time_agg_large_num_groups('sum', 2, False) - 117±2ms 65.3±0.7ms 0.56 groupby.ResampleCFTime.time_agg_large_num_groups('sum', 2, False) - 113±1ms 62.0±0.4ms 0.55 groupby.ResampleCFTime.time_agg_large_num_groups('sum', 1, False) - 112±2ms 61.4±0.5ms 0.55 groupby.Resample.time_agg_large_num_groups('sum', 1, False) - 8.50±0.2ms 1.61±0.01ms 0.19 combine.Combine1d.time_combine_by_coords - 1.81±0.02s 224±2ms 0.12 combine.Combine1dDask.time_combine_by_coords

SOME BENCHMARKS HAVE CHANGED SIGNIFICANTLY. PERFORMANCE INCREASED. ```

 
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