[maschwenk]

codspeed's walltime number came from one compilation per project, so no stdev, no p-value, and a 10% runner swing reads as a change (#669 is docs only and got "improved by 9.7%")

in walltime mode the bench now runs itself ten more times as child processes and reports those. still one compilation per process, memory and simulation modes untouched

local run with the runner env faked, Compiler-Unions: 10 rounds, mean 75.2 ms, stdev 1.4 ms. about 15 s more per project on the macro runner

• lint: inventory every unsafe site with a class and a verdict #669

[github-actions]

Performance change vs main

Workflow run · main 357d1d3ec231 → PR merge 55071077b4b8 (head 9a93d973c0dd)

Clef gate: Running benchmarks because the decision was unavailable (ValueError).

The main and PR release binaries are byte-for-byte identical. No compiler performance difference to measure.

[codspeed]

Merging this PR will improve performance by 10.02%

1 warning

⚠️ 4 benchmarks are dominated by system calls

System calls cannot be simulated consistently and are left out of the measure. The reported value understates the real cost. Switch to the Walltime instrument to measure them.

Learn more about system calls

See affected benchmarks

⚡ 3 improved benchmarks
✅ 9 untouched benchmarks
⏩ 4 skipped benchmarks¹

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
⚡	Walltime	drizzle-orm	1.3 s	1.2 s	+15.46%
⚡	Walltime	webpack	1,019.2 ms	912.2 ms	+11.73%
⚡	Walltime	Compiler-Unions	647.6 ms	627.3 ms	+3.23%

Tip

Curious why performance improved? Comment @codspeedbot explain why performance improved on this PR, or directly use the CodSpeed MCP with your agent.

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_{Comparing max/codspeed-walltime-samples (9a93d97) with main (357d1d3)}

Footnotes

1. 4 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. ↩

[maschwenk]

oops didn’t mean to merge this without approval. let me know if we need to roll back