babeltrace2-source.ctf.fs - Linux
Overview
babeltrace2-source.ctf.fs is a command-line tool for generating a CTF (Common Trace Format) trace source from a Linux ftrace trace directory. It is primarily used for analyzing kernel-level events and system behavior.
Syntax
babeltrace2-source.ctf.fs [options] <trace-directory> <ctf-file>
Options/Flags
-
-a, –annotate
Annotate the trace with extra information, including kernel text markers and user-provided annotations. -
-d, –debug
Enable debug log messages. -
-f, –filter
Use a filter expression to select specific events to include in the trace. -
-g, –group
Generate a CTF trace for each event group. -
-h, –help
Print the help message and exit. -
-l, –limit
Maximum number of events to include in the trace. -
-s, –split
Split the trace into multiple CTF files. -
-t, –timestamp
Timestamp format (default: "relative") -
-v, –verbose
Increase the verbosity level.
Examples
Example 1: Generate a simple CTF trace from a trace directory
babeltrace2-source.ctf.fs /sys/kernel/debug/tracing /tmp/trace.ctf
Example 2: Generate a CTF trace with annotations
babeltrace2-source.ctf.fs -a /sys/kernel/debug/tracing /tmp/annotated-trace.ctf
Example 3: Filter the trace by event group
babeltrace2-source.ctf.fs -g -f sched /sys/kernel/debug/tracing /tmp/sched-trace.ctf
Common Issues
-
Permission denied: Ensure that you have sufficient permissions to access the trace directory.
-
No events found: Check if the trace directory contains valid trace data.
-
CTF file is corrupted: Verify the integrity of the generated CTF file using a tool like
ctftool
.
Integration
babeltrace2-source.ctf.fs can be integrated with other tools for advanced analysis. For example:
- ctfload to load the trace into a database for querying and visualization.
- babeltrace to analyze and visualize the trace using a graphical interface.
Related Commands
- babeltrace – A command-line tool for analyzing kernel traces.
- trace-cmd – A command-line tool for recording and analyzing traces.
- ctftool – A command-line tool for manipulating CTF traces.
- Linux Trace Toolkit (LTTng) – A trace event framework for Linux.