Improvements to worker startup latency

[jkrumbiegel]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 66.31579% with 32 lines in your changes missing coverage. Please review.
✅ Project coverage is 79.20%. Comparing base (d476318) to head (1046cf9).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...okWorker/src/PrecompileTools-post1.12/workloads.jl	0.00%	16 Missing ⚠️
src/startup.jl	46.15%	7 Missing ⚠️
...ookWorker/src/PrecompileTools-pre1.12/workloads.jl	86.84%	5 Missing ⚠️
...er/src/PrecompileTools-post1.12/PrecompileTools.jl	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #341      +/-   ##
==========================================
- Coverage   80.10%   79.20%   -0.90%     
==========================================
  Files          39       44       +5     
  Lines        2106     2193      +87     
==========================================
+ Hits         1687     1737      +50     
- Misses        419      456      +37     

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