html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,performed_via_github_app,issue
https://github.com/pydata/xarray/issues/3200#issuecomment-1416446874,https://api.github.com/repos/pydata/xarray/issues/3200,1416446874,IC_kwDOAMm_X85UbUOa,1325771,2023-02-03T21:52:57Z,2023-02-03T21:52:57Z,CONTRIBUTOR,"I was iterating today over a large dataset loaded with `open_mfdataset`, and had been observing memory usage growing from 2GB to 8GB+.  

I can confirm that `xr.set_options(file_cache_maxsize=1)` kept memory use at a steady 2GB, properly releasing memory.

```
libnetcdf                 4.8.1           nompi_h261ec11_106    conda-forge
netcdf4                   1.6.0           nompi_py310h0a86a1f_103    conda-forge
xarray                    2023.1.0           pyhd8ed1ab_0    conda-forge
dask                      2023.1.0           pyhd8ed1ab_0    conda-forge
dask-core                 2023.1.0           pyhd8ed1ab_0    conda-forge
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,479190812