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KProbe
Dprobes (Dynamic Probes) is a Linux kernel analysis framework built off of Kprobes, which features the ability to insert breakpoints and software probes dynamically into running code. It is licensed under the GNU GPLv2 licence. History The IBM Linux Technology Centre first announced Dprobes on 16 August 2000 and would later ship with SUSE Linux Enterprise Server (SLES) and continue to do so until SLES 9. With the release of Linux 2.6.9-rc2, Kprobes became a part of the mainline kernel on 2 November 2004, while Dprobes remained a separate patch. With several other tracing options being added to subsequent kernel version, such as SystemTap, some commercial Linux distributions moved away from using Dprobes. See also *DTrace *LTTng 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 ... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Linux Kernel
The Linux kernel is a Free and open-source software, free and open source Unix-like kernel (operating system), kernel that is used in many computer systems worldwide. The kernel was created by Linus Torvalds in 1991 and was soon adopted as the kernel for the GNU operating system (OS) which was created to be a free software, free replacement for Unix. Since the late 1990s, it has been included in many Linux distributions, operating system distributions, many of which are called Linux. One such Linux kernel operating system is Android (operating system), Android which is used in many mobile and embedded devices. Most of the kernel code is written in C (programming language), C as supported by the GNU compiler collection (GCC) which has extensions beyond standard C. The code also contains assembly language, assembly code for architecture-specific logic such as optimizing memory use and task execution. The kernel has a Modular programming, modular design such that modules can be inte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GPLv2
The GNU General Public Licenses (GNU GPL or simply GPL) are a series of widely used free software licenses, or copyleft, ''copyleft'' licenses, that guarantee end users the freedom to run, study, share, or modify the software. The GPL was the first copyleft license available for general use. It was originally written by Richard Stallman, the founder of the Free Software Foundation (FSF), for the GNU Project. The license grants the recipients of a computer program the rights of the Free Software Definition. The licenses in the GPL series are all copyleft licenses, which means that any derivative work must be distributed under the same or equivalent license terms. The GPL is more restrictive than the Lesser General Public License, GNU Lesser General Public License, and even more distinct from the more widely used permissive software licenses such as BSD licenses, BSD, MIT License, MIT, and Apache License, Apache. Historically, the GPL license family has been one of the most pop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SUSE Linux Enterprise Server
SUSE Linux Enterprise (SLE) is a Linux-based operating system developed by SUSE. It is available in two editions, suffixed with Server (SLES) for servers and mainframes, and Desktop (SLED) for workstations and desktop computers. Its major versions are released at an interval of three–four years, while minor versions (called "Service Packs") are released about every 12 months. SUSE Linux Enterprise products receive more intense testing than the upstream openSUSE community product, with the intention that only mature, stable versions of the included components will make it through to the released enterprise product. It is developed from a common code base with other SUSE Linux Enterprise products. IBM's Watson was built on IBM's POWER7 systems using SLES. Hewlett Packard Enterprise's Frontier, world's first and fastest exascale supercomputer runs on SUSE's SLES 15 (HPE Cray OS). SUSE Linux Enterprise Server SLES was developed based on SUSE Linux by a small team led by M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SystemTap
In computing, SystemTap () is a scripting language and tool for dynamically instrumenting running production Linux-based operating systems. System administrators can use SystemTap to extract, filter and summarize data in order to enable diagnosis of complex performance or functional problems. SystemTap consists of free and open-source software and includes contributions from Red Hat, IBM, Intel, Hitachi, Oracle, the University of Wisconsin-Madison and other community members. History SystemTap debuted in 2005 in Red Hat Enterprise Linux 4 Update 2 as a technology preview. After four years in development, SystemTap 1.0 was released in 2009. , SystemTap runs fully supported in all Linux distributions including RHEL / CentOS 5 since update 2, SLES 10, Fedora, Debian and Ubuntu. Tracepoints in the CPython VM and JVM were added in SystemTap 1.2 in 2009. In November 2019, SystemTap 4.2 included prometheus exporter. Usage SystemTap files are written in the SystemTap language (sav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DTrace
DTrace is a comprehensive dynamic tracing framework originally created by Sun Microsystems for troubleshooting kernel and application problems on production systems in real time. Originally developed for Solaris, it has since been released under the free Common Development and Distribution License (CDDL) in OpenSolaris and its descendant illumos, and has been ported to several other Unix-like systems. Windows Server systems froWindow Server 2025will have DTrace as part of the system. 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. It can also provide much more fine-grained information, such as a log of the arguments with which a specific function is being called, or a list of the processes accessing a specific file. In 2010, Oracle Corporation acquired Sun Microsystems and announced the discontinuation of OpenSolaris. As a community effort of some core S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LTTng
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. 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. Designed for minimal performance impact and having a near-zero impact when not tracing, it is useful for debugging a wide range of bugs that are otherwise extremely challenging. Features The challenging problems traceable with LTTng include, for example, performance problems on parallel systems and on real-time systems. Custom instrumentation is easy to add. Structure LTTng consists of kernel modules (for Linux kernel tracing) and dynamically linked libraries (for application and library tracing). It is controlled by a session daemon, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Debuggers
A debugger is a computer program used to software testing, test and debugging, debug other programs (the "target" programs). Common features of debuggers include the ability to run or halt the target program using breakpoints, stepping (debugging), step through code line by line, and display or modify the contents of memory, CPU registers, and stack frames. The code to be examined might alternatively be running on an ''instruction set simulator'' (ISS), a technique that allows great power in its ability to halt when specific conditions are encountered, but which will typically be somewhat slower than executing the code directly on the appropriate (or the same) processor. Some debuggers offer two modes of operation, full or partial simulation, to limit this impact. An exception occurs when the program cannot normally continue because of a software bug, programming bug or invalid data. For example, the program might have tried to use an instruction not available on the current ver ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
