babeltrace2-intro - Linux
Overview
babeltrace2-intro
is a tool for analyzing and visualizing performance data. It provides an interface to interact with the babeltrace2 system for performance tracing, recording, and playback.
Syntax
babeltrace2-intro [options] [filter_expr] <input_file>...
Options/Flags
--trace-dir=<dir>
: Set the trace directory--help (-h)
: Display help and usage information--version (-v)
: Display version information--loop
: Continuously loop through the input files--validate
: Validate the trace files before processing
Examples
Simple Example:
babeltrace2-intro trace.bt2
Complex Example:
babeltrace2-intro -trace-dir=/tmp/trace -loop event:sched:* -event-color-map=sched:swapper=red,sched:jiffies=green
Common Issues
- Error: Failed to open trace file: Ensure that the input file(s) are accessible and have valid permissions.
- Error: Invalid trace format: Check if the input files are valid babeltrace2 trace files.
- Slow performance: The analysis process can be resource-intensive. Increase system resources or try using filters to narrow down the data.
Integration
babeltrace2-intro
can be integrated with other commands for advanced analysis:
- Parse traces:
babeltrace2-intro trace.bt2 | jq
- Visualize data:
babeltrace2-intro trace.bt2 | bt2graphviz -o graph.svg