issue_comments: 291516997

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https://github.com/pydata/xarray/issues/1301#issuecomment-291516997 https://api.github.com/repos/pydata/xarray/issues/1301 291516997 MDEyOklzc3VlQ29tbWVudDI5MTUxNjk5Nw== 1197350 2017-04-04T14:27:18Z 2017-04-04T14:27:18Z MEMBER

My understanding is that you are concatenating across the variable obs, so no, it wouldn't make sense to have obs be the same in all the datasets.

My tests showed that it's not necessarily the concat step that is slowing this down. Your profiling suggest that it's a netcdf datetime decoding issue.

I wonder if @shoyer or @jhamman have any ideas about how to improve performance here.

 
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