2017-10-20 18:44:29 +01:00
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# perf
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2021-08-15 18:59:09 +01:00
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> Framework for Linux performance counter measurements.
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2021-10-26 12:19:43 +01:00
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> More information: <https://perf.wiki.kernel.org>.
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2017-10-20 18:44:29 +01:00
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2017-10-21 14:05:17 +01:00
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- Display basic performance counter stats for a command:
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2017-10-20 18:44:29 +01:00
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2017-10-21 14:05:17 +01:00
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`perf stat {{gcc hello.c}}`
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2017-10-20 18:44:29 +01:00
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2021-08-15 18:59:09 +01:00
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- Display system-wide real-time performance counter profile:
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2017-10-20 18:44:29 +01:00
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`sudo perf top`
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2021-01-31 17:05:18 +00:00
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- Run a command and record its profile into `perf.data`:
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2017-10-20 18:44:29 +01:00
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`sudo perf record {{command}}`
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2021-10-26 12:19:43 +01:00
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- Record the profile of an existing process into `perf.data`:
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`sudo perf record -p {{pid}}`
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2021-01-31 17:05:18 +00:00
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- Read `perf.data` (created by `perf record`) and display the profile:
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2017-10-20 18:44:29 +01:00
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`sudo perf report`
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