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