Try - catch bad for performance in Julia.

From the official Julia documentation, in the section on noteworthy differences between Julia and Python:

Exception handling in Julia is done using try — catch — finally, instead of try — except — finally. In contrast to Python, it is not recommended to use exception handling as part of the normal workflow in Julia (compared with Python, Julia is faster at ordinary control flow but slower at exception-catching).

Therefore, while it makes sense for SimPy to handle interruptions with try - except logic, doing so in ConcurrentSim hurts performance, and may not be the ideal solution.

Start with the linked Julia documentation, then locate ConcurrentSim's exception-handling paths; no file, test, or entry point is named. Compare the current interruption handling with Julia's performance guidance and define completion around an evidence-backed improvement that preserves interruption behavior.