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> 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}
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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