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Plan a projection of fields as one pack of column plans - #10858

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Move the scan IO and chunk planner changes to the DuckDB driver PR

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CodSpeed / CodSpeed Performance Analysis failed Oct 27, 2026

Performance Regression: -0.42%

3 warnings, 1 note

⚠️ Walltime results may be unreliable

Some benchmarks used the Walltime instrument outside CodSpeed Macro Runners, which can make the results inconsistent.

Learn more about Macro Runners

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⚠️ Unable to measure the execution of 1 benchmark

This benchmark measured no execution time, so its result is not comparable and counts as unchanged. This usually happens when the compiler removes the code under test.

Prevent compiler optimizations

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⚠️ 19 benchmarks are dominated by system calls

System calls cannot be simulated consistently and are left out of the measure. The reported value understates the real cost. Switch to the Walltime instrument to measure them.

Learn more about system calls

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ℹ️ 40 benchmarks have no flamegraph

The flamegraph wasn't generated: the symbols of the profiling trace could not be resolved, because no information about the language frames was collected.

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⚡ 3 improved benchmarks
❌ 2 regressed benchmarks
✅ 2434 untouched benchmarks
⏩ 116 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
❌ CPU Simulation chunked_dict_primitive_canonical_into[f64, (1000, 1000, 10)] 141 µs 201.4 µs -29.96%
❌ CPU Simulation missing_stats[16] 70.4 µs 88.9 µs -20.77%
⚡ CPU Simulation chunked_dict_primitive_into_canonical[f64, (1000, 1000, 10)] 222.6 µs 160.7 µs +38.51%
⚡ Walltime filter_avx2[80] 2 µs 1.7 µs +14.12%
⚡ Walltime mul_u16_nonnull_avx512 12.5 µs 11.2 µs +11.61%

Tip

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


Comparing ji/confident-noether-que65k (0736530) with develop (fb4a037)

Open in CodSpeed

Footnotes

  1. 116 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. ↩