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Potential performance issue: Unreliable performance of df.melt in pandas 2.2.2 #103

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TendouArisu opened this issue Feb 16, 2025 · 0 comments

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@TendouArisu
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Issue Description:

Hello.
I have discovered a performance degradation in the df.melt function of pandas version 2.2.2. And I notice that requirements.txt, shows that it depends on pandas version 2.2.2. I am not sure whether this performance problem in pandas will affect this repository. I found some discussions on GitHub related to this issue, including #59657 and #60461.
I also found that notebooks/tide_modelling/Coastal_altimetry_comparison.ipynb used the influenced api. There may be more files used the influenced api.

Suggestion

I would recommend considering an upgrade to a different version of pandas > 2.2.2 or exploring other solutions to optimize the performance.
Any other workarounds or solutions would be greatly appreciated.
Thank you!

@robbibt robbibt closed this as not planned Won't fix, can't repro, duplicate, stale Apr 7, 2025
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