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Return null for mean of all-null input#8389

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mitko/aggregate/mean-all-null-returns-null
Draft

Return null for mean of all-null input#8389
dimitarvdimitrov wants to merge 3 commits into
developfrom
mitko/aggregate/mean-all-null-returns-null

Propagate NaN through float sums and means

561876e
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CodSpeed HQ / CodSpeed Performance Analysis failed Jun 12, 2026 in 0s

Performance Regression: -19.02%

⚠️ Unknown Walltime execution environment detected

Using the Walltime instrument on standard Hosted Runners will lead to inconsistent data.

For the most accurate results, we recommend using CodSpeed Macro Runners: bare-metal machines fine-tuned for performance measurement consistency.

⚡ 5 improved benchmarks
❌ 93 regressed benchmarks
✅ 1430 untouched benchmarks
⏩ 10 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
❌ Simulation compare[48] 213 µs 300.6 µs -29.15%
❌ Simulation compare[50] 227.7 µs 319.2 µs -28.65%
❌ Simulation compare[49] 228.2 µs 317.7 µs -28.18%
❌ Simulation compare[44] 207.5 µs 287.8 µs -27.89%
❌ Simulation compare[46] 218.5 µs 302.5 µs -27.76%
❌ Simulation compare[47] 223.5 µs 309.3 µs -27.73%
❌ Simulation compare[40] 190.7 µs 263.6 µs -27.67%
❌ Simulation compare[44] 212.2 µs 292.3 µs -27.43%
❌ Simulation compare[45] 218.9 µs 301 µs -27.28%
❌ Simulation compare[43] 209.2 µs 287.6 µs -27.25%
❌ Simulation compare[42] 204.6 µs 281.1 µs -27.23%
❌ Simulation compare[40] 195.6 µs 268.4 µs -27.1%
❌ Simulation compare[43] 214.2 µs 292.5 µs -26.77%
❌ Simulation compare[41] 204.5 µs 279.3 µs -26.76%
❌ Simulation compare[42] 209.4 µs 286 µs -26.76%
❌ Simulation compare[41] 209.3 µs 284 µs -26.28%
❌ Simulation compare[39] 199.9 µs 270.8 µs -26.2%
❌ Simulation compare[38] 195.5 µs 264.6 µs -26.11%
❌ Simulation compare[36] 187.3 µs 252.5 µs -25.84%
❌ Simulation compare[39] 204.7 µs 275.6 µs -25.71%
... ... ... ... ... ...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.

Comparing mitko/aggregate/mean-all-null-returns-null (561876e) with develop (3731d5b)

Open in CodSpeed

Footnotes

  1. 10 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

View more details on CodSpeed HQ