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By doing so, neither the stack setup nor the function call are executed when instrumentation is not enabled. By identifying the branch executing stack setup and function call as unlikely (using the gcc built-in expect()), a hint is given to the compiler to position the tracing instructions away from cache lines involved in standard kernel ...
LTTng (Linux Trace Toolkit: next generation) is a system software package for correlated tracing of the Linux kernel, applications and libraries. The project was originated by Mathieu Desnoyers with an initial release in 2005. Its predecessor is the Linux Trace Toolkit.
eBPF – Linux kernel tracing backend providing a set of features similar to DTrace [30] since kernel version 4.9; ftrace – a tracing framework for the Linux kernel, capable of tracing scheduling events, interrupts, memory-mapped I/O, CPU power state transitions, etc. ktrace – a BSD Unix and macOS utility that traces kernel–program ...
The Linux Trace Toolkit (LTT) is a set of tools that is designed to log program execution details from a patched Linux kernel and then perform various analyses on them, using console-based and graphical tools. LTT has been mostly superseded by its successor LTTng (Linux Trace Toolkit Next Generation).
ftrace (Function Tracer) is a tracing framework for the Linux kernel.Although its original name, Function Tracer, came from ftrace's ability to record information related to various function calls performed while the kernel is running, ftrace's tracing capabilities cover a much broader range of kernel's internal operations.
Tracing ktrace is a utility included with certain versions of BSD Unix and Mac OS X that traces kernel interaction with a program and dumps it to disk for the purposes of debugging and analysis. Traced kernel operations include system calls , name translations, signal processing, and I/O .
strace is a diagnostic, debugging and instructional userspace utility for Linux.It is used to monitor and tamper with interactions between processes and the Linux kernel, which include system calls, signal deliveries, and changes of process state.
Linux is a Unix-like computer operating system assembled under the model of free and open-source software development and distribution. Most Linux distributions, as collections of software based around the Linux kernel and often around a package management system, provide complete LAMP setups through