tldr/pages/linux/trace-cmd.md

trace-cmd

Utility to interact with the Ftrace Linux kernel internal tracer. This utility only runs as root. More information: https://manned.org/trace-cmd.

• 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