issue_comments: 1366545996

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https://github.com/pydata/xarray/issues/7404#issuecomment-1366545996 https://api.github.com/repos/pydata/xarray/issues/7404 1366545996 IC_kwDOAMm_X85Rc9ZM 14808389 2022-12-28T10:28:22Z 2022-12-28T10:28:22Z MEMBER

I'm not sure how memory_profiler calculates the memory usage, but I suspect that this happens because python's garbage collector does not have to run immediately after the del.

Can you try manually triggering the garbage collector? ```python import gc import os import psutil import xarray as xr from memory_profiler import profile

@profile def main(): path = 'ECMWF_ERA-40_subset.nc' gc.collect() print(f"Before opening file: {psutil.Process(os.getpid()).memory_info().rss / 1024 ** 2} MiB") ds = xr.open_dataset(path) del ds gc.collect() print(f"After opening file: {psutil.Process(os.getpid()).memory_info().rss / 1024 ** 2} MiB")

if name == 'main': print(f"Start: {psutil.Process(os.getpid()).memory_info().rss / 1024 ** 2} MiB") main() print(f"End: {psutil.Process(os.getpid()).memory_info().rss / 1024 ** 2} MiB") ```

 
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