Hi, I've tried looking for similar examples of this question but have gotten nowhere. When calling sleep syscall, I have noticed two cases which confuses me. # shortsleep 10usecs sleep 100usecs 50usecs exit # Case #1 Does the process "wake up" after 100 usecs in total? Meaning does the process start sleeping as sleep is being called and therefore only really sleeps for 90 usecs? Case #2 Does the process only sleep when the sleep is called. For example it takes 10usecs for sleep to be called and executed. Does the process wake up 100 usecs after that? Can I please know which case is the correct one. Apologies if you've answered to similar question, thank you for your time.