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Cache available parallelism - #7620
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AdamGSforce-pushed
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079ce1fCompareSigned-off-by: Adam Gutglick <adam@spiraldb.com>
AdamGSforce-pushed
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Polar Signals Profiling ResultsLatest Run
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Benchmarks: PolarSignals ProfilingVortex (geomean): 0.961x ➖ datafusion / vortex-file-compressed (0.961x ➖, 1↑ 0↓)
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Contributor
File Sizes: PolarSignals ProfilingNo file size changes detected. |
Contributor
Benchmarks: FineWeb NVMeVerdict: No clear signal (low confidence) datafusion / vortex-file-compressed (0.998x ➖, 0↑ 1↓)
datafusion / vortex-compact (0.971x ➖, 1↑ 0↓)
datafusion / parquet (1.003x ➖, 0↑ 0↓)
duckdb / vortex-file-compressed (1.049x ➖, 0↑ 1↓)
duckdb / vortex-compact (0.967x ➖, 1↑ 0↓)
duckdb / parquet (1.009x ➖, 0↑ 0↓)
Full attributed analysis
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File Sizes: FineWeb NVMeNo file size changes detected. |
joseph-isaacs
approved these changes
Apr 24, 2026
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Benchmarks: TPC-H SF=1 on NVMEVerdict: No clear signal (low confidence) datafusion / vortex-file-compressed (0.986x ➖, 0↑ 0↓)
datafusion / vortex-compact (0.994x ➖, 0↑ 0↓)
datafusion / parquet (1.021x ➖, 0↑ 2↓)
datafusion / arrow (1.000x ➖, 0↑ 1↓)
duckdb / vortex-file-compressed (0.987x ➖, 0↑ 0↓)
duckdb / vortex-compact (0.996x ➖, 0↑ 0↓)
duckdb / parquet (1.005x ➖, 0↑ 1↓)
duckdb / duckdb (1.005x ➖, 0↑ 0↓)
Full attributed analysis
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File Sizes: TPC-H SF=1 on NVMENo file size changes detected. |
Contributor
Benchmarks: TPC-DS SF=1 on NVMEVerdict: No clear signal (low confidence) datafusion / vortex-file-compressed (0.958x ➖, 4↑ 0↓)
datafusion / vortex-compact (0.963x ➖, 3↑ 0↓)
datafusion / parquet (0.996x ➖, 2↑ 6↓)
duckdb / vortex-file-compressed (0.968x ➖, 8↑ 2↓)
duckdb / vortex-compact (0.973x ➖, 3↑ 1↓)
duckdb / parquet (0.982x ➖, 2↑ 1↓)
duckdb / duckdb (1.019x ➖, 3↑ 16↓)
Full attributed analysis
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Contributor
File Sizes: TPC-DS SF=1 on NVMENo file size changes detected. |
Contributor
Benchmarks: FineWeb S3Verdict: No clear signal (low confidence) datafusion / vortex-file-compressed (0.985x ➖, 0↑ 0↓)
datafusion / vortex-compact (0.838x ➖, 1↑ 0↓)
datafusion / parquet (0.948x ➖, 0↑ 0↓)
duckdb / vortex-file-compressed (0.965x ➖, 0↑ 0↓)
duckdb / vortex-compact (0.938x ➖, 0↑ 0↓)
duckdb / parquet (0.991x ➖, 0↑ 0↓)
Full attributed analysis
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Signed-off-by: Adam Gutglick <adam@spiraldb.com>
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Benchmarks: Random AccessVortex (geomean): 0.984x ➖ unknown / unknown (1.008x ➖, 1↑ 0↓)
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Contributor
Benchmarks: Statistical and Population GeneticsVerdict: No clear signal (low confidence) duckdb / vortex-file-compressed (0.992x ➖, 0↑ 0↓)
duckdb / vortex-compact (1.001x ➖, 0↑ 0↓)
duckdb / parquet (1.005x ➖, 0↑ 0↓)
Full attributed analysis
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Contributor
File Sizes: Statistical and Population GeneticsNo file size changes detected. |
Contributor
Benchmarks: TPC-H SF=10 on NVMEVerdict: No clear signal (low confidence) datafusion / vortex-file-compressed (1.034x ➖, 0↑ 0↓)
datafusion / vortex-compact (1.035x ➖, 0↑ 0↓)
datafusion / parquet (1.037x ➖, 0↑ 1↓)
datafusion / arrow (1.052x ➖, 0↑ 1↓)
duckdb / vortex-file-compressed (1.021x ➖, 0↑ 0↓)
duckdb / vortex-compact (1.016x ➖, 0↑ 0↓)
duckdb / parquet (1.010x ➖, 0↑ 0↓)
duckdb / duckdb (1.012x ➖, 0↑ 0↓)
Full attributed analysis
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Contributor
File Sizes: TPC-H SF=10 on NVMENo file size changes detected. |
Contributor
Benchmarks: TPC-H SF=1 on S3Verdict: No clear signal (low confidence) datafusion / vortex-file-compressed (0.887x ➖, 0↑ 0↓)
datafusion / vortex-compact (0.935x ➖, 2↑ 0↓)
datafusion / parquet (0.960x ➖, 0↑ 0↓)
duckdb / vortex-file-compressed (0.925x ➖, 0↑ 0↓)
duckdb / vortex-compact (0.959x ➖, 0↑ 0↓)
duckdb / parquet (0.966x ➖, 0↑ 0↓)
Full attributed analysis
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Contributor
Benchmarks: Clickbench on NVMEVerdict: No clear signal (low confidence) datafusion / vortex-file-compressed (1.002x ➖, 1↑ 1↓)
datafusion / parquet (1.007x ➖, 0↑ 0↓)
duckdb / vortex-file-compressed (0.921x ➖, 11↑ 1↓)
duckdb / parquet (0.961x ➖, 0↑ 0↓)
duckdb / duckdb (0.975x ➖, 5↑ 0↓)
Full attributed analysis
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Contributor
File Sizes: Clickbench on NVMEFile Size Changes (1 files changed, -0.0% overall, 0↑ 1↓)
Totals:
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Contributor
Benchmarks: CompressionVortex (geomean): 1.010x ➖ unknown / unknown (1.078x ➖, 1↑ 55↓)
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Contributor
Benchmarks: TPC-H SF=10 on S3Verdict: No clear signal (environment too noisy confidence) datafusion / vortex-file-compressed (0.909x ➖, 3↑ 0↓)
datafusion / vortex-compact (0.950x ➖, 0↑ 0↓)
datafusion / parquet (0.864x ➖, 2↑ 0↓)
duckdb / vortex-file-compressed (0.998x ➖, 0↑ 0↓)
duckdb / vortex-compact (0.995x ➖, 0↑ 0↓)
duckdb / parquet (0.941x ➖, 0↑ 0↓)
Full attributed analysis
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Summary
The idea is shamlessly taken from apache/datafusion#21084, which improved CI runtimes there significantly (and also makes a real difference in performance).
Fetching the available parallelism isn't free, both because it might generate a stack trace and because it might end up doing a bunch of work, its even called out in its docs.