Revision as of 13:57, 5 February 2014

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)