tldr/pages/linux/perf.md

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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