Pandas version checks

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  • [x] I have confirmed this issue exists on the latest version of pandas.

  • [x] I have confirmed this issue exists on the main branch of pandas.

Reproducible Example

nlargest is so slow, I think this is question, maybe we should do someting to improve it.

Here, is my code, you can see nlargest use many time more than it should use.

Installed Versions

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Prior Performance

No response

Comment From: Liam3851

You haven't provided your data or a benchmark-- does your index have duplicates? I wonder if this is related to #55767.

Comment From: Jeffrharr

Until this gets more information -- I'd like to give #55767 a shot. Looks simple enough.

Are there are performance benchmarks anywhere in case of regressions?

Comment From: rhshadrach

@Jeffrharr - it looks like no, it should likely be added to our ASVs.

Comment From: Jeffrharr

@rhendric for now, I do have a working solution to #55767 that is unlikely to cause any regressions and I'll make a PR early next week. I only fixed the bug with duplicate indices causing performance issues -- there's still some room for improvement in general.