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feat(bench): add Darwin-specific fib variant for macOS flamegraph cov…

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chore: bump instrument-hooks #49

feat(bench): add Darwin-specific fib variant for macOS flamegraph cov…
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CodSpeed HQ / CodSpeed Performance Analysis failed May 22, 2026 in 0s

Performance Regression: -8.02%

⚠️ 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

⚡ 13 improved benchmarks
❌ 21 regressed benchmarks
✅ 426 untouched benchmarks
🆕 2 new benchmarks

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
WallTime BM_RLE_Decode[10000] 24.2 µs 21.9 µs +10.6%
🆕 WallTime BM_FibonacciRecursive_Darwin[35] N/A < 1 ns N/A
🆕 WallTime BM_FibonacciRecursive_Darwin[35] N/A < 1 ns N/A
Simulation DoubleTest[MyTemplatedFixture, double] 61.7 ns 90.8 ns -32.11%
Simulation FooTest[MyFixture] 61.7 ns 90.8 ns -32.11%
Simulation BM_custom_args[1000] 120 ns 90.8 ns +32.11%
Simulation BM_short_name 61.1 ns 90.3 ns -32.31%
Simulation BarTest[MyFixture] 61.7 ns 90.8 ns -32.11%
Simulation BM_custom_name_in_namespace 61.1 ns 90.3 ns -32.31%
Simulation BM_custom_multi[10/20] 121.1 ns 150.3 ns -19.41%
Simulation BM_with_multiple_args[100/200] 121.1 ns 150.3 ns -19.41%
Simulation BM_rand_vector 122.2 ns 151.4 ns -19.27%
Simulation BM_with_args[1000] 120 ns 90.8 ns +32.11%
Simulation IntTest[MyTemplatedFixture, int] 61.7 ns 90.8 ns -32.11%
Simulation TestA[MyTemplate1, int] 61.7 ns 90.8 ns -32.11%
Simulation TestB[MyTemplate2, int, double] 61.7 ns 90.8 ns -32.11%
Simulation BM_custom_args[100] 120 ns 90.8 ns +32.11%
Simulation BM_custom_multi[100/200] 121.1 ns 150.3 ns -19.41%
Simulation BM_with_multiple_args[10/20] 121.1 ns 150.3 ns -19.41%
Simulation BM_with_args[100] 120 ns 90.8 ns +32.11%
... ... ... ... ... ...

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.


Comparing cod-2637-bump-instrument-hooks-in-codspeed-cpp-to-support-macos (476e75c) with main (1c22e59)

Open in CodSpeed