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[3.15] gh-154062: Stop normalizing differential flamegraph duration (GH-154082) - #158871

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@pablogsal pablogsal commented Oct 5, 2026 •

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Backport of #154082 to Python 3.15.

Comparing profiles with different total durations could make unchanged functions appear faster or slower. Convert baseline samples using the sample-interval ratio without normalizing the total duration. Elided frames use the same units for their geometry and differential metadata.

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