Write the list layout when the enabled editions include it

[mhk197]

Summary

The default writer now writes the list layout whenever the session's enabled editions include vortex.list, so the editions are the only switch. with_list_layout() is removed, with no opt-out in its place. No default edition includes vortex.list, so default writes are unchanged.

Changes

• WriteStrategyBuilder::from_session turns the list layout on when the enabled editions include vortex.list.
• Removes WriteStrategyBuilder::with_list_layout().
• vortex-file's test session enables every registered layout, so its list tests now write the list layout; the flat/list switch in write_read_roundtrip_with_layout is removed.

API Changes

• Removed WriteStrategyBuilder::with_list_layout() (added in Make the list layout opt-in and edition-gated #10529, unreleased).

[codspeed]

Merging this PR will regress 7 benchmarks

⚠️ 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.

⚠️ 19 benchmarks spent significant time in system calls

System calls cannot be consistently instrumented, so they are not included in the measure, which understates the real cost. Please switch to the Walltime instrument to accurately measure system calls.

Measurement and system calls

• test_scan_filter[int_float]
• compress_fsst[(200, 64, 4)]
• test_scan_filter[int_str_float]
• test_scan_filter[int_str]
• test_scan[int_str]
• test_scan_read_all_to_arrow_array[int_str_float]
• test_scan[int_str_float]
• random_i128[0.01]
• pcodec_compress_f64
• decompress[u16, (4000, 256)]
• …and 9 more

ℹ️ 40 benchmarks have no flame graph

The flamegraph could not be generated because we failed to resolve the symbols in the profiling trace. This happens when we fail to harvest information about language frames.

• test_scan_filter_to_arrow_array[int_float]
• test_repeated_scan_filter[int_float]
• test_repeated_scan_filter[int]
• test_scan_filter_to_arrow_array[int]
• test_scan_filter[int]
• test_scan_filter[int_float]
• test_repeated_scan_scalar_at[int]
• test_repeated_scan_scalar_at[int_float]
• test_scan_filter_to_arrow_array[int_str]
• test_scan_filter[int_str_float]
• …and 30 more

⚠️ 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

⚡ 46 improved benchmarks
❌ 7 regressed benchmarks
✅ 2334 untouched benchmarks
⏩ 12 skipped benchmarks¹

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌ ℹ️	Simulation	test_scan_filter_to_arrow_array[int_float]	3.5 ms	4.1 ms	-13.51%
❌	WallTime	words_gather_dispatch_avx512[65536]	896 ns	1,021 ns	-12.24%
❌	WallTime	bitpack_blocked_compress_avx2	6.7 µs	7.6 µs	-12.19%
❌ ℹ️	Simulation	test_repeated_scan_filter[int_float]	3.4 ms	3.9 ms	-10.93%
❌ ℹ️	Simulation	test_repeated_scan_filter[int]	2.5 ms	2.7 ms	-10.35%
❌	WallTime	threshold_neon[8]	1.4 µs	1.5 µs	-10.05%
❌ ℹ️	Simulation	test_scan_filter_to_arrow_array[int]	2.5 ms	2.8 ms	-10.04%
⚡	Simulation	embedding_code_runs[4096]	1,940.1 µs	160 µs	×12
⚡	Simulation	embedding_code_runs[2048]	997.1 µs	108.2 µs	×9.2
⚡	Simulation	embedding_code_runs[1024]	534.9 µs	82.7 µs	×6.5
⚡	Simulation	embedding_code_runs[512]	306 µs	74.1 µs	×4.1
⚡	Simulation	isolated_runs[u8, (512, 0)]	304.7 µs	74.2 µs	×4.1
⚡	Simulation	embedding_runs[1536]	890.8 µs	236 µs	×3.8
⚡	Simulation	embedding_runs[1024]	605.3 µs	168.2 µs	×3.6
⚡	Simulation	fragmented_runs[1024]	605.2 µs	168.6 µs	×3.6
⚡	Simulation	isolated_runs[u16, (512, 0)]	322.1 µs	95 µs	×3.4
⚡	Simulation	embedding_runs[768]	498.2 µs	170.3 µs	×2.9
⚡	Simulation	isolated_runs[u8, (256, 0)]	190.5 µs	70.7 µs	×2.7
⚡	Simulation	isolated_runs[u8, (256, 1020)]	193.9 µs	73.3 µs	×2.6
⚡	Simulation	isolated_runs[u32, (512, 0)]	353.5 µs	135.8 µs	×2.6
...	...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

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 mk/list-layout-from-editions (2d1339f) with develop (06adefd)²}

Footnotes

1. 12 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. ↩

2. No successful run was found on develop (8a1f2cb) during the generation of this report, so 06adefd was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩