What is LTTng UST?
DESCRIPTION. LTTng-UST, the Linux Trace Toolkit Next Generation Userspace Tracer, is a port of the low-overhead tracing capabilities of the LTTng kernel tracer to user-space. The library “liblttng-ust” enables tracing of applications and libraries.
How does LTTng work?
LTTng is a set of software components which interact to instrument the Linux kernel and user applications, and to control tracing (start and stop recording, create recording event rules, and the rest).
What is Linux LTTng?
LTTng (Linux Trace Toolkit: next generation) is a system software package for correlated tracing of the Linux kernel, applications and libraries. LTTng uses the Tracepoint instrumentation of the Linux kernel, as well as various other information sources such as kprobes, and the Perf performance monitoring counters.
What is Linux tracing?
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.
What is trace compass?
Trace Compass is a Java tool for viewing and analyzing any type of logs or traces. Its goal is to provide views, graphs, metrics, etc. to help extract useful information from traces, in a way that is more user-friendly and informative than huge text dumps.
How do I trace a call in Linux?
Using Uprobes (since Linux 3.5)
- cd /usr/src/linux-`uname -r`/tools/perf.
- for i in `./perf probe -F -x ~/Desktop/datalog-2.2/datalog`; do sudo ./perf probe -x ~/Desktop/datalog-2.2/datalog $i; done.
How do I trace in Eclipse?
In the Debug Perspective,
- Select Window | Show View | Other | C-Spy Trace | C-Spy Trace (ETM)
- Press OK.
- Activate the Trace Output by clicking the Power On Symbol in the Trace Window.
- The Eclipse Session should look like as follows:
Why is DTrace used?
DTrace can be used to get a global overview of a running system, such as the amount of memory, CPU time, filesystem and network resources used by the active processes.
What is MTR Linux?
MTR is a simple, cross-platform command-line network diagnostic tool that combines the functionality of commonly used traceroute and ping programs into a single tool.
What is the documentation for the LTTng project?
The LTTng Documentation is divided into the following sections: Nuts and bolts explains the rudiments of software tracing and the rationale behind the LTTng project. You can skip this section if you’re familiar with software tracing and with the LTTng project.
Which is a component of the LTTng machinery?
Components of LTTng describes the various components of the LTTng machinery, like the daemons, the libraries, and the command-line interface. Instrumentation shows different ways to instrument user applications and the Linux kernel.
Do you need xmlto tool for LTTng documentation?
Thanks to this option, you don’t need the AsciiDoc and xmlto tools at build time, and a manual pager at run time, to get access to this documentation. New blocking mode: an LTTng-UST tracepoint can now block until sub-buffer space is available instead of discarding event records in discard mode .