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| The 'perf' command line tool is the interface which can be used by users to utilize the new performance counter subsystem in recent Linux kernels (version > 2.6.30). The new performance counter subsystem of Linux allows for using provides rich abstractions over the PMU hardware capabilities of modern CPUs. It provides per task, per CPU and per-workload counters, counter groups, and it provides sampling capabilities on top of those. It also provides abstraction for 'software events' - such as minor/major page faults, task migrations, task context-switches and tracepoints. The 'perf' tool can be used to optimize, validate and measure applications, workloads or the full system. |
Contents
Overview
The 'perf' command line tool is the interface which can be used by users to utilize the new performance counter subsystem in recent Linux kernels (version > 2.6.30). The new performance counter subsystem of Linux allows for using provides rich abstractions over the PMU hardware capabilities of modern CPUs. It provides per task, per CPU and per-workload counters, counter groups, and it provides sampling capabilities on top of those. It also provides abstraction for 'software events' - such as minor/major page faults, task migrations, task context-switches and tracepoints. The 'perf' tool can be used to optimize, validate and measure applications, workloads or the full system.
perf commands
perf list
perf stat
perf report
perf help
Running applications under perf surveilance
HEPSPEC