perf: remove an allocation from CachedPath::module_directory

[Boshen]

No description provided.

[graphite-app]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.40%. Comparing base (2492bd2) to head (f4b627e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #880      +/-   ##
==========================================
+ Coverage   94.39%   94.40%   +0.01%     
==========================================
  Files          17       17              
  Lines        3247     3255       +8     
==========================================
+ Hits         3065     3073       +8     
  Misses        182      182              

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[codspeed-hq]

CodSpeed Performance Report

Merging #880 will degrade performances by 3.31%

_{Comparing 11-27-perf_remove_an_allocation_from_module_directory_ (f4b627e) with main (2492bd2)}

Summary

❌ 1 regression
✅ 11 untouched
⏩ 5 skipped¹

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

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	small	11.2 µs	11.5 µs	-3.31%

Footnotes

1. 5 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. ↩