Any recollection on how you arrived at the --yjit-exec-mem-size value? We've been running YJIT in production for some time, but haven't looked into tuning this at all.
Not parent poster and do not have production YJIT experience. =)
My guess is that you would monitor `RubyVM::YJIT.runtime_stats[:code_region_size]` and/or `RubyVM::YJIT.runtime_stats[:code_gc_count]` so that you can get a feel for a reasonable value for your application, as well as know whether or not the "code GC" is running frequently.