[ComputerGuru]

It’s counter-intuitive (and you probably already know this but for the benefit of others) but depending on frequency and CPU availability, polling can have a lower latency than interrupts. You just have a much smaller window of time to execute your handling code (unless you don’t care).

It’s actually partially why (some?) hard real-time systems eschew interrupts altogether. They introduce a source of non-determinism into the mix as an interrupt handler can stall out non-interrupt performance-sensitive code (or starve it).