issue_comments: 806667029

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https://github.com/pydata/xarray/issues/2857#issuecomment-806667029 https://api.github.com/repos/pydata/xarray/issues/2857 806667029 MDEyOklzc3VlQ29tbWVudDgwNjY2NzAyOQ== 2418513 2021-03-25T12:40:18Z 2021-03-25T12:49:00Z NONE
  • All of the time in store.close() is, in its turn spent in CachingFileManager.close()
  • That time is spent in h5netcdf.File.close()
  • All of which is spent in h5netcdf.File.flush()

h5netcdf.File.flush() when there's 0 datasets in file:

``` 0.21619391441345215

Timer unit: 1e-06 s

Total time: 0.006862 s File: .../python3.8/site-packages/h5netcdf/core.py Function: flush at line 689

Line # Hits Time Per Hit % Time Line Contents

689 def flush(self): 690 1 4.0 4.0 0.1 if 'r' not in self._mode: 691 1 111.0 111.0 1.6 self._set_unassigned_dimension_ids() 692 1 3521.0 3521.0 51.3 self._create_dim_scales() 693 1 3224.0 3224.0 47.0 self._attach_dim_scales() 694 1 2.0 2.0 0.0 if not self._preexisting_file and self._write_ncproperties: 695 self.attrs._h5attrs['_NCProperties'] = _NC_PROPERTIES ```

h5netcdf.File.flush() when there's 200 datasets in file (758 times slower):

``` Timer unit: 1e-06 s

Total time: 4.55295 s File: .../python3.8/site-packages/h5netcdf/core.py Function: flush at line 689

Line # Hits Time Per Hit % Time Line Contents

689 def flush(self): 690 1 3.0 3.0 0.0 if 'r' not in self._mode: 691 1 1148237.0 1148237.0 25.2 self._set_unassigned_dimension_ids() 692 1 462926.0 462926.0 10.2 self._create_dim_scales() 693 1 2941779.0 2941779.0 64.6 self._attach_dim_scales() 694 1 2.0 2.0 0.0 if not self._preexisting_file and self._write_ncproperties: 695 self.attrs._h5attrs['_NCProperties'] = _NC_PROPERTIES ```

 
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