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⚡ Bolt: Hoist os.Executable out of loop in generateCronContent#103

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bolt-perf-hoist-executable-3043058321349769621
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⚡ Bolt: Hoist os.Executable out of loop in generateCronContent#103
minibota wants to merge 1 commit intomainfrom
bolt-perf-hoist-executable-3043058321349769621

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@minibota minibota commented Feb 4, 2026

💡 What: Hoisted os.Executable() call outside the loop in generateCronContent.
🎯 Why: os.Executable() performs a system call (readlink on Linux) which is expensive and unnecessary to repeat for every job since the executable path is constant.
📊 Impact:

  • Speed: ~10.6x faster for 1000 jobs (3.5ms -> 0.33ms).
  • Allocations: Reduced from ~3000 to ~5 allocs/op for 1000 jobs.
    🔬 Measurement: Verified with a temporary benchmark BenchmarkGenerateCronContent in cmd/benchmark_daemon_test.go.

PR created automatically by Jules for task 3043058321349769621 started by @minibota

Hoists the `os.Executable()` call outside the loop in `generateCronContent`
to avoid repeated system calls (readlink) when processing multiple jobs.

Benchmarks show a 10.6x speedup (3.5ms -> 0.33ms) and a 99.8% reduction
in allocations (3002 -> 5) for 1000 jobs.

Co-authored-by: minibota <1483356+minibota@users.noreply.github.com>
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