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perf

Framework for Linux performance counter measurements.

More information.

• 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

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