grouped aggregate microbenches

[onursatici]

Summary

Add a couple of grouped aggregation divan benchmarks

[codspeed-hq]

Merging this PR will improve performance by 11.94%

⚠️ 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.

⚡ 3 improved benchmarks
❌ 1 regressed benchmark
✅ 1509 untouched benchmarks
🆕 4 new benchmarks

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	encode_varbin[(1000, 2)]	143.1 µs	163.7 µs	-12.58%
⚡	Simulation	bitwise_not_vortex_buffer_mut[128]	275.3 ns	216.9 ns	+26.89%
⚡	Simulation	bitwise_not_vortex_buffer_mut[1024]	336.9 ns	278.6 ns	+20.94%
⚡	Simulation	bitwise_not_vortex_buffer_mut[2048]	400.6 ns	342.2 ns	+17.05%
🆕	Simulation	count_i32_clustered_nulls	N/A	685.2 µs	N/A
🆕	Simulation	count_varbinview	N/A	255.2 µs	N/A
🆕	Simulation	sum_i32_clustered_nulls	N/A	594.3 µs	N/A
🆕	Simulation	sum_i32_nullable_all_valid	N/A	351.7 µs	N/A

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 os/grouped-agg-bench (b2221df) with develop (1b19ac9)}

[joseph-isaacs]

All microbenchmarks must be less than 1ms

[robert3005]

These aren't very micro benches

[onursatici]

micro 🅱️enches