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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. 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 discontinuing OpenSolaris. As a community effort of some core Solaris engineers to create a truly open source Solaris, illumos operating system was announced vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mike Shapiro (programmer)
Michael W. Shapiro is an American computer programmer who worked in operating systems and storage at Sun Microsystems, Oracle, and EMC. While working at Sun Microsystems, Shapiro developed pgrep, the Modular Debugger (MDB), DTrace, fault management and diagnosis, and other software for Sun's Solaris operating system. The pgrep and pkill utilities Shapiro created are today found in every major Unix operating system, including Linux, BSD, and macOS, and are commonly used by system administrators and developers. Shapiro and the DTrace team received a Technology Innovation Award and Overall Gold Medal for Innovation for DTrace from the Wall Street Journal in 2006. DTrace was also recognized by USENIX with the Software Tools User Group (STUG) award in 2008. Over the next 10 years, DTrace was ported and incorporated into other major operating systems, including BSD and Apple's macOS. Starting in 2006, Shapiro led Sun's engineering effort to build a commercial storage product using ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adam Leventhal (programmer)
Adam Leventhal (born 1979 in the United States) is an American software engineer, and one of the three authors of DTrace, a dynamic tracing facility in Solaris 10 (Sun Microsystems' latest OS) which allows users to observe, debug and tune system behavior in real time. Available to the public since November 2003, DTrace has since been used to find opportunities for performance improvements in production environments. Adam joined the Solaris kernel development team after graduating cum laude from Brown University in 2001 with his B.Sc. in Math and Computer Science. In 2006, Adam and his DTrace colleagues were chosen Gold winners in The Wall Street Journal ''The Wall Street Journal'' is an American business-focused, international daily newspaper based in New York City, with international editions also available in Chinese and Japanese. The ''Journal'', along with its Asian editions, is published ...'s Technology Innovation Awards contest by a panel of judges representing indust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bryan Cantrill
Bryan M. Cantrill (born 1973) is an American software engineer who worked at Sun Microsystems and later at Oracle Corporation following its acquisition of Sun. He left Oracle on July 25, 2010 to become the Vice President of Engineering at Joyent, transitioning to Chief Technology Officer at Joyent in April 2014, until his departure on July 31 of 2019. He is now the CTO of Oxide Computer company. Professional life Cantrill was born in Vermont, later moving to Colorado, where he attained the rank of Eagle Scout. He studied computer science at Brown University, spending two summers at QNX Software Systems doing kernel development. Upon completing his B.Sc. in 1996, he immediately joined Sun Microsystems to work with Jeff Bonwick in the Solaris Performance Group. In 2005 Bryan Cantrill was named one of the 35 Top Young Innovators by ''Technology Review'', MIT's magazine. Cantrill was included in the TR35 list for his development of DTrace, a function of the OS Solaris 10 that pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Development And Distribution License
The Common Development and Distribution License (CDDL) is a free and open-source software license, produced by Sun Microsystems, based on the Mozilla Public License (MPL). Files licensed under the CDDL can be combined with files licensed under other licenses, whether open source or proprietary. In 2005 the Open Source Initiative approved the license. The Free Software Foundation (FSF) considers it a free software license, but one which is incompatible with the GNU General Public License (GPL). Terms Derived from the Mozilla Public License 1.1, the CDDL tries to address some of the problems of the MPL.CDDL Why Summary on sun.com (archived, 2005) Like the MPL, the CDDL is a weak |
Solaris (operating System)
Solaris is a proprietary Unix operating system originally developed by Sun Microsystems. After the Sun acquisition by Oracle in 2010, it was renamed Oracle Solaris. Solaris superseded the company's earlier SunOS in 1993, and became known for its scalability, especially on SPARC systems, and for originating many innovative features such as DTrace, ZFS and Time Slider. Solaris supports SPARC and x86-64 workstations and servers from Oracle and other vendors. Solaris was registered as compliant with the Single UNIX Specification until 29 April 2019. Historically, Solaris was developed as proprietary software. In June 2005, Sun Microsystems released most of the codebase under the CDDL license, and founded the OpenSolaris open-source project. With OpenSolaris, Sun wanted to build a developer and user community around the software. After the acquisition of Sun Microsystems in January 2010, Oracle decided to discontinue the OpenSolaris distribution and the development model. In Aug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OpenSolaris
OpenSolaris () is a discontinued open-source computer operating system based on Solaris and created by Sun Microsystems. It was also, perhaps confusingly, the name of a project initiated by Sun to build a developer and user community around the eponymous operating system software. OpenSolaris is a descendant of the UNIX System V Release 4 (SVR4) code base developed by Sun and AT&T in the late 1980s and is the only version of the System V variant of UNIX available as open source. OpenSolaris was developed as a combination of several software ''consolidations'' that were open sourced starting with Solaris 10. It includes a variety of free software, including popular desktop and server software. After Oracle’s acquisition of Sun Microsystems in 2010, Oracle discontinued development of OpenSolaris in house, pivoting to focus exclusively on the development of the proprietary Solaris Express (now Oracle Solaris). Prior to Oracle's close-sourcing Solaris, a group of former O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oracle Acquisition Of Sun
The acquisition of Sun Microsystems by Oracle Corporation was completed on January 27, 2010. After the acquisition was completed, Oracle, only a software vendor prior to the merger, owned Sun's hardware product lines, such as SPARC Enterprise, as well as Sun's software product lines, including the Java programming language. Concerns about Sun's position as a competitor to Oracle were raised by antitrust regulators, open source advocates, customers, and employees over the acquisition. The EU Commission delayed the acquisition for several months over questions about Oracle's plans for MySQL, Sun's competitor to Oracle Database. The commission finally approved the takeover, apparently pressured by the United States to do so, according to a WikiLeaks cable released in September 2011. History In late 2008, Sun was approached by IBM to discuss a possible merger. At about the same time, Sun also began discussions with another company, widely rumored but not confirmed to be Hewlett ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
D Programming Language (other)
D is the fourth letter of the Latin alphabet. D or d may also refer to: Places * D River, in Oregon, US * Detroit, US (nickname "D") People with the name * D, the bass player for Australian band Testeagles * "D!" or "Dee!", names of Detlef Soost, a German dancer and choreographer Arts, entertainment, and media Fictional entities * D, a character in a series of novels titled ''Vampire Hunter D'' by Hideyuki Kikuchi * D, a nickname given to Count Dracula in the novel ''Dracula'' written by Bram Stoker * D, one of the characters in '' Another Code: Two Memories'' (''Trace Memory'') * Count D, a character in the anime/manga series ''Pet Shop of Horrors'' * Substance D, a fictional recreational drug in the novel and film ''A Scanner Darkly'' Games * ''D'' (video game), a game released in 1995 for the PC, 3DO, PlayStation and Sega Saturn Music Groups and labels *D (band), a Japanese rock/metal band *D Records, a former record label in Houston, Texas, US *"d:" or "d:?", often used ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illumos
Illumos (stylized as illumos) is a partly free and open-source Unix operating system. It is based on OpenSolaris, which was based on System V Release 4 (SVR4) and the Berkeley Software Distribution (BSD). Illumos comprises a kernel, device drivers, system libraries, and utility software for system administration. This core is now the base for many different open-sourced illumos distributions, in a similar way in which the Linux kernel is used in different Linux distributions. The maintainers write ''illumos'' in lowercase since some computer fonts do not clearly distinguish a lowercase ''L'' from an uppercase ''i'': ''Il'' (see homoglyph). The project name is a combination of words ''illuminare'' from Latin for ''to light'' and ''OS'' for ''Operating System''. Overview Illumos was announced via webinar on Thursday, 3 August 2010, as a community effort of some core Solaris engineers to create a truly open source Solaris by swapping closed source bits of OpenSolaris wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FreeBSD
FreeBSD is a free and open-source Unix-like operating system descended from the Berkeley Software Distribution (BSD), which was based on Research Unix. The first version of FreeBSD was released in 1993. In 2005, FreeBSD was the most popular open-source BSD operating system, accounting for more than three-quarters of all installed and permissively licensed BSD systems. FreeBSD has similarities with Linux, with two major differences in scope and licensing: FreeBSD maintains a complete system, i.e. the project delivers a kernel, device drivers, userland utilities, and documentation, as opposed to Linux only delivering a kernel and drivers, and relying on third-parties for system software; FreeBSD source code is generally released under a permissive BSD license, as opposed to the copyleft GPL used by Linux. The FreeBSD project includes a security team overseeing all software shipped in the base distribution. A wide range of additional third-party applications may be installe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tracing (software)
In software engineering, tracing involves a specialized use of logging to record information about a program's execution. This information is typically used by programmers for debugging purposes, and additionally, depending on the type and detail of information contained in a trace log, by experienced system administrators or technical-support personnel and by software monitoring tools to diagnose common problems with software. Tracing is a cross-cutting concern. There is not always a clear distinction between ''tracing'' and other forms of ''logging'', except that the term ''tracing'' is almost never applied to logging that is a functional requirement of a program (therefore excluding logging of data from an external source, such as data acquisition in a high-energy physics experiment, and write-ahead logging). Logs that record program usage (such as a server log) or operating-system events primarily of interest to a system administrator (see for example ''Event Viewer'') fal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operating System
An operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources. For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it. Operating systems are found on many devices that contain a computer from cellular phones and video game consoles to web servers and supercomputers. The dominant general-purpose personal computer operating system is Microsoft Windows with a market share of around 74.99%. macOS by Apple Inc. is in second place (14.84%), and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
