tldr/pages/linux/perf.md

perf

Framework for linux performance counter measurements.

• 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}}

• Read "perf.data" (created by perf record) and display the profile:

sudo perf report