bench: warm ArrayKernels before the bench loop

[joseph-isaacs]

Change benchmarks to force initialisation of vortex session before start of benchmarking loop

[github-actions]

This PR has been marked as stale because it has been open for 14 days with no activity. Please comment or remove the stale label if you wish to keep it active, otherwise it will be closed in 7 days

[codspeed-hq]

Merging this PR will improve performance by 32.59%

⚠️ 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.

⚡ 4 improved benchmarks
❌ 2 regressed benchmarks
✅ 1591 untouched benchmarks
⏩ 4 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	ArrowExportVTable_to_arrow_field	9.2 µs	10.9 µs	-15.24%
❌	Simulation	chunked_varbinview_into_canonical[(100, 100)]	272.2 µs	307.1 µs	-11.38%
⚡	Simulation	sum_i32_nullable_all_valid	177.7 µs	37.5 µs	×4.7
⚡	Simulation	chunked_varbinview_canonical_into[(1000, 10)]	191.4 µs	154.7 µs	+23.68%
⚡	Simulation	bitwise_not_vortex_buffer_mut[128]	273.6 ns	244.4 ns	+11.93%
⚡	Simulation	encode_varbin[(1000, 32)]	162.4 µs	147.4 µs	+10.17%

Tip

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

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_{Comparing claude/blissful-bohr-aynoba (61f8f14) with develop (ee2cd67)}

Footnotes

1. 4 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. ↩