8.3.1.1. gprof

Try these first

1. 1.

   What does gprof do?

   Hint

   Think about how we analyze performance in applications.

2. 2.

   What command do you use to compile a program for profiling with gprof?

   Hint

   Remember the compilation flag for profiling!

3. 3.

   What is the main purpose of gprof?

   • To compile code
   • To profile user-space applications
   • To generate core dumps

   Hint

   Think about tools that analyze application performance.

4. 4.

   True or False: gprof can be used to profile both user-space and kernel-space applications.

   • True
   • False

   Hint

   Consider the scope of gprof's functionality.

5. 5.

   You have an application that runs slower than expected. Explain how you would use gprof to diagnose and resolve the performance issues.

   Hint

   Consider the steps you learned regarding gprof usage.

6. 6.

   Discuss how you could use the metrics from gprof output to decide which functions to optimize and provide a strategy for optimizing them.

   Hint

   Think about why you analyze call frequency and execution time.