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[ty] Top materialization issues (take 394) #24736

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[ty] Top materialization issues (take 394) #24736

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CodSpeed HQ / CodSpeed Performance Analysis failed Apr 20, 2026 in 0s

Performance Regression: -19.11%

⚠️ 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 regressed benchmarks
✅ 37 untouched benchmarks
⏩ 69 skipped benchmarks1

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
❌ Simulation ty_check_file[incremental] 8.1 ms 8.7 ms -7.04%
❌ Simulation ty_micro[pandas_tdd] 250.3 ms 309.4 ms -19.11%
❌ Memory ty_check_file[incremental] 170.3 KB 177.7 KB -4.17%

Comparing alex-brent/default-specializations (194d01b) with main (11c2703)

Open in CodSpeed

Footnotes

  1. 69 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. ↩

View more details on CodSpeed HQ