January 2018
Intermediate to advanced
456 pages
12h 49m
English
Content preview from Embedded Linux Development Using Yocto Project Cookbook - Second Edition
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How it works...
SystemTap scripts are written with its own C/awk-like language. They enable us to trace events by using the kernel code at different locations, such as:
- Beginning and end of SystemTap sessions
- Entry, return, or specific offset of kernel and user space functions
- Timer events
- Performance hardware counter events
They also enable us to extract data, such as:
- Thread, process, or user ID
- Current CPU
- Process name
- Time
- Local variables
- Kernel and user space backtraces
Additionally, SystemTap also offers the ability to analyze the gathered data, and allows different probes to work together. SystemTap includes a wide selection of example scripts and a framework for creating script libraries that can be shared. These tapsets are installed ...
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