Путеводитель по Руководству Linux

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   perf-stat    ( 1 )

запустите команду и соберите статистику счетчика производительности (Run a command and gather performance counter statistics)

TIMINGS

As displayed in the example above we can display 3 types of
       timings. We always display the time the counters were
       enabled/alive:

83.409183620 seconds time elapsed

For workload sessions we also display time the workloads spent in user/system lands:

74.684747000 seconds user 8.739217000 seconds sys

Those times are the very same as displayed by the time tool.