perf

Framework for Linux performance counter measurements. More information: https://perf.wiki.kernel.org.

• Display basic performance counter stats for a command:
  perf stat {{gcc hello.c}}
• Display system-wide real-time performance counter profile:
  sudo perf top
• Run a command and record its profile into perf.data:
  sudo perf record {{command}}
• Record the profile of an existing process into perf.data:
  sudo perf record -p {{pid}}
• Read perf.data (created by perf record) and display the profile:
  sudo perf report