perf — Framework for Linux performance counter measurements. More information: <https://perfwiki.github.io/

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]}} {{pid}}

Read `perf.data` (created by `perf record`) and display the profile

sudo perf report