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Support i128 and i256 decimals in DecimalByteParts encoding - #9834

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Support i128 and i256 decimals in DecimalByteParts encoding #9834
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mk/dbp-v2-feature

Add wide decimal byte-part splitting and assembly logic (#9808)

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CodSpeed HQ / CodSpeed Performance Analysis failed Sep 10, 2026 in 0s

1 benchmark regressed

⚠️ 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.

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 3 improved benchmarks
❌ 1 regressed benchmark
✅ 2193 untouched benchmarks
🆕 18 new benchmarks
⏩ 218 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
❌ Simulation decompress[u64, (4000, 1024)] 70.8 µs 86.3 µs -18.01%
⚡ WallTime arrow_checked_add_u32_avx2[16384] 21.4 µs 17.7 µs +21.19%
⚡ WallTime filtered_owned_i64_avx512[OneNullInEight] 26.2 µs 22.4 µs +17.28%
⚡ WallTime mul_u32_nonnull_avx512 6.3 µs 5.6 µs +11.94%
🆕 Simulation dbp_assemble[(I128, 1024)] N/A 48 µs N/A
🆕 Simulation dbp_assemble[(I128, 8192)] N/A 266.9 µs N/A
🆕 Simulation dbp_assemble[(I256, 1024)] N/A 80.8 µs N/A
🆕 Simulation dbp_assemble[(I256, 8192)] N/A 530.4 µs N/A
🆕 Simulation dbp_assemble[(I64, 1024)] N/A 9.2 µs N/A
🆕 Simulation dbp_assemble[(I64, 8192)] N/A 7.3 µs N/A
🆕 Simulation dbp_split_all_valid[(I128, 1024)] N/A 51.9 µs N/A
🆕 Simulation dbp_split_all_valid[(I128, 8192)] N/A 288.3 µs N/A
🆕 Simulation dbp_split_all_valid[(I256, 1024)] N/A 89.5 µs N/A
🆕 Simulation dbp_split_all_valid[(I256, 8192)] N/A 550.2 µs N/A
🆕 Simulation dbp_split_all_valid[(I64, 1024)] N/A 7.5 µs N/A
🆕 Simulation dbp_split_all_valid[(I64, 8192)] N/A 7.5 µs N/A
🆕 Simulation dbp_split_mixed_null[(I128, 1024)] N/A 73.3 µs N/A
🆕 Simulation dbp_split_mixed_null[(I128, 8192)] N/A 318.4 µs N/A
🆕 Simulation dbp_split_mixed_null[(I256, 1024)] N/A 101.7 µs N/A
🆕 Simulation dbp_split_mixed_null[(I256, 8192)] N/A 587.3 µs N/A
... ... ... ... ... ...

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Comparing mk/dbp-v2-feature (4edb7aa) with develop (35cd01f)

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Footnotes

  1. 218 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. ↩

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