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trace-cmd

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

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