CERN lutorial Exercise 1 A common user experience:"My IO intensive application does not run fast enough -why?" Three important questions to answer what performance should we expect of our IO system? how can we measure limitations? how can we inspect the IO of our application? To answer this,we need a basic understanding of the IO system, some measurement and debugging tools CERN CSC 2018 Data Technology ExercisesCSC 2018 Data Technology Exercises Tutorial - Exercise 1 • A common user experience: “My IO intensive application does not run fast enough - why?” • Three important questions to answer • what performance should we expect of our IO system? • how can we measure limitations? • how can we inspect the IO of our application? • To answer this, we need a basic understanding of the IO system, some measurement and debugging tools