trace-cmd

Display tracing status

$ sudo trace-cmd stat

$ sudo trace-cmd list -t

$ sudo trace-cmd start -p [function|function_graph|irqsoff|wakeup]

$ sudo trace-cmd show

$ sudo trace-cmd stop

$ sudo trace-cmd clear

$ sudo trace-cmd record

$ sudo trace-cmd report

trace-cmd COMMAND [OPTIONS]

trace-cmd is a utility for interacting with the Linux kernel's Ftrace tracing framework. It provides a user-friendly interface for configuring and capturing kernel traces, analyzing function calls, timing, and system events.
The tool supports various tracer plugins including function tracing, function call graphs, and latency tracers for debugging and performance analysis.

-p PLUGIN

Specify tracer plugin

stat

Display tracing system status

Start the kernel tracer

Stop the kernel tracer

View current trace output

Clear trace buffers

Record a trace to file

Display recorded trace

List available tracers, events, and functions

Requires root privileges. Tracing can impact system performance. Large traces consume significant memory and storage. Some features depend on kernel configuration.

trace-cmd was created by Steven Rostedt as a front-end for the Linux kernel's Ftrace framework, simplifying the process of kernel tracing and analysis.

trace-cmd-list(1), trace-cmd-record(1), trace-cmd-report(1), perf(1)