Kernel Profiling

Using readprofile

• Compile your kernel with CONFIG_PROFILING=y

• boot your kernel with profile=2 on the palo command line

• as root:

  • readprofile -r # clears the profile counters

  • run your test

  • readprofile -m /path/to/System.map -d /path/to/vmlinux > /tmp/profile.txt

• you might want to sort the results using “sort -nr +2”

Using oprofile

• Compile your kernel with CONFIG_OPROFILE=y (or as a module)

• (to be written)