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/7730#issuecomment-1505403088,https://api.github.com/repos/pydata/xarray/issues/7730,1505403088,IC_kwDOAMm_X85ZuqDQ,2448579,2023-04-12T14:43:15Z,2023-04-12T14:43:15Z,MEMBER,Thanks for the report! I think we should add your example as a benchmark.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1657036222
https://github.com/pydata/xarray/issues/7730#issuecomment-1505309893,https://api.github.com/repos/pydata/xarray/issues/7730,1505309893,IC_kwDOAMm_X85ZuTTF,10194086,2023-04-12T13:47:19Z,2023-04-12T13:47:19Z,MEMBER,Thanks for looking into this!,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1657036222
https://github.com/pydata/xarray/issues/7730#issuecomment-1499878014,https://api.github.com/repos/pydata/xarray/issues/7730,1499878014,IC_kwDOAMm_X85ZZlJ-,2448579,2023-04-07T02:56:29Z,2023-04-07T02:56:29Z,MEMBER,"Also because your groups are sorted, `engine='flox'` is faster

```python
gb = da.groupby(""time.year"")

# using max
xr.set_options(use_flox=True)
%timeit gb.max(""time"")
%timeit gb.max(""time"", engine=""flox"")

xr.set_options(use_flox=False)
%timeit gb.max(""time"")
```

```
177 ms ± 3.24 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
11.9 ms ± 471 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
18.5 ms ± 629 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1657036222
https://github.com/pydata/xarray/issues/7730#issuecomment-1499872700,https://api.github.com/repos/pydata/xarray/issues/7730,1499872700,IC_kwDOAMm_X85ZZj28,2448579,2023-04-07T02:45:24Z,2023-04-07T02:49:41Z,MEMBER,"The slowness is basically a bunch of copies happening in `align`, `broadcast`, and `transpose`. It's made a lot worse for this case, because we take CFTimeIndex and cast it back to CFTimeIndex, repeating all the validity checks.

And then there's https://github.com/xarray-contrib/flox/issues/222","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1657036222
https://github.com/pydata/xarray/issues/7730#issuecomment-1499263329,https://api.github.com/repos/pydata/xarray/issues/7730,1499263329,IC_kwDOAMm_X85ZXPFh,10194086,2023-04-06T15:36:32Z,2023-04-06T15:36:32Z,MEMBER,Of course - I added it above.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1657036222
https://github.com/pydata/xarray/issues/7730#issuecomment-1498971031,https://api.github.com/repos/pydata/xarray/issues/7730,1498971031,IC_kwDOAMm_X85ZWHuX,2448579,2023-04-06T12:18:50Z,2023-04-06T12:18:50Z,MEMBER,Thanks can you add version info please,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,1657036222