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Utility to interact with the Ftrace Linux kernel internal tracer. This utility only runs as root. More information:

  • Display the status of tracing system:

trace-cmd stat

  • List available tracers:

trace-cmd list -t

  • Start tracing with a specific plugin:

trace-cmd start -p {{timerlat|osnoise|hwlat|blk|mmiotrace|function_graph|wakeup_dl|wakeup_rt|wakeup|function|nop}}

  • View the trace output:

trace-cmd show

  • Stop the tracing but retain the buffers:

trace-cmd stop

  • Clear the trace buffers:

trace-cmd clear

  • Clear the trace buffers and stop tracing:

trace-cmd reset