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VarBinViewBuilder: support appending buffers directly into the builder storage - #9235

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VarBinViewBuilder: support appending buffers directly into the builder storage#9235
robert3005 wants to merge 2 commits into
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rk/varbinview-append-buffer

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a0bec35
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CodSpeed HQ / CodSpeed Performance Analysis failed Aug 6, 2026 in 0s

5 benchmarks 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

⚡ 11 improved benchmarks
❌ 5 regressed benchmarks
✅ 1952 untouched benchmarks
⏩ 8 skipped benchmarks1

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
Simulation decompress[u32, (10000, 1024)] 78.5 µs 95.2 µs -17.55%
Simulation fsst_decompress_string 7.2 ms 8.3 ms -12.77%
Simulation decompress_fsst[(10000, 4, 4)] 794.2 µs 901 µs -11.85%
Simulation decompress_fsst[(10000, 4, 8)] 815.5 µs 922.1 µs -11.56%
Simulation canonicalize_compare[(10000, 4, 4)] 955.9 µs 1,064.1 µs -10.17%
Simulation chunked_varbin_to_varbinview_builder[(10, 100)] 509.3 µs 329.1 µs +54.76%
Simulation chunked_varbin_opt_to_varbinview_builder[(10, 100)] 794.1 µs 554.8 µs +43.14%
Simulation chunked_varbin_to_varbinview_builder[(500, 2)] 164.5 µs 119.1 µs +38.13%
Simulation chunked_varbin_into_canonical[(10, 100)] 670.9 µs 488 µs +37.47%
Simulation chunked_varbin_into_canonical[(500, 2)] 175.4 µs 130.9 µs +33.94%
Simulation chunked_varbin_opt_to_varbinview_builder[(500, 2)] 162.4 µs 122.5 µs +32.57%
Simulation chunked_into_canonical[(1000, 50, 8, 4)] 17.9 ms 15.7 ms +14.22%
Simulation chunked_canonicalize_into[(1000, 50, 8, 4)] 15.1 ms 13.2 ms +13.66%
Simulation chunked_canonicalize_into[(1000, 50, 8, 16)] 16.2 ms 14.3 ms +12.98%
Simulation chunked_into_canonical[(1000, 50, 8, 16)] 19 ms 16.8 ms +12.83%
Simulation decompress[u64, (1000, 16)] 73 µs 65.2 µs +11.87%

Tip

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


Comparing rk/varbinview-append-buffer (a0bec35) with develop (a1057db)

Open in CodSpeed

Footnotes

  1. 8 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.