Fundamentals of Operating Systems Course https://oscourse.winIn this video I use strace a performance tool that measures how many system calls does a process makes. We compare a simple task of reading from a file, and we run the program in different runtimes, namely nodejs, buns , python and native C. We discuss the cost of kernel mode switches, system calls and pe0:00 Intro5:00 Code Explanation6:30 Python9:30 NodeJS12:30 BunJS13:12 C16:00 Summary