Oprofile Components

• Kernel hardware driver code:

  • Real-time clock (RTC)
  • Processor performance monitoring hardware

• Daemon:

  • Tracks executables running
  • Transfers samples from kernel space (kernel buffer) to user space (sample files)
  • Maps (event, PID, virtual address) ->(file, offset)

• User tools:

  • OProfile state and configuration (oprof_start, opcontrol, and op_dump)
  • Samples per executable, per function, per line (op_time, oprofpp, and op_to_source)

Notes: