Что (кто) такое light-weight process - определение
![Ancient Greek]] official bronze weights dating from around the 6th century BC, exhibited in the [[Ancient Agora Museum]] in Athens, housed in the [[Stoa of Attalus]].](https://commons.wikimedia.org/wiki/Special:FilePath/3199 - Athens - Stoà of Attalus Museum - Bronze weights - Photo by Giovanni Dall'Orto, Nov 9 2009.jpg?width=200 "Ancient Greek]] official bronze weights dating from around the 6th century BC, exhibited in the [[Ancient Agora Museum]] in Athens, housed in the [[Stoa of Attalus]].")
![0}} in 0.86 seconds. This is a horizontal acceleration of 5.3{{spaces}}g. Combined with the vertical g-force in the stationary case the [[Pythagorean theorem]] yields a g-force of 5.4{{spaces}}g. It is this g-force that causes the driver's weight if one uses the operational definition. If one uses the gravitational definition, the driver's weight is unchanged by the motion of the car.](https://commons.wikimedia.org/wiki/Special:FilePath/Nitrolympics TopFuel 2005.jpg?width=200 "0}} in 0.86 seconds. This is a horizontal acceleration of 5.3{{spaces}}g. Combined with the vertical g-force in the stationary case the [[Pythagorean theorem]] yields a g-force of 5.4{{spaces}}g. It is this g-force that causes the driver's weight if one uses the operational definition. If one uses the gravitational definition, the driver's weight is unchanged by the motion of the car.")
![A [[weighbridge]], used for weighing trucks](https://commons.wikimedia.org/wiki/Special:FilePath/Peso-Valdivia-dsc02545.jpg?width=200 "A [[weighbridge]], used for weighing trucks")
![moments]] acting on it sum to zero).](https://commons.wikimedia.org/wiki/Special:FilePath/WeightNormal.svg?width=200 "moments]] acting on it sum to zero).")
Википедия
In computer operating systems, a light-weight process (LWP) is a means of achieving multitasking. In the traditional meaning of the term, as used in Unix System V and Solaris, a LWP runs in user space on top of a single kernel thread and shares its address space and system resources with other LWPs within the same process. Multiple user-level threads, managed by a thread library, can be placed on top of one or many LWPs - allowing multitasking to be done at the user level, which can have some performance benefits.
In some operating systems, there is no separate LWP layer between kernel threads and user threads. This means that user threads are implemented directly on top of kernel threads. In those contexts, the term "light-weight process" typically refers to kernel threads and the term "threads" can refer to user threads. On Linux, user threads are implemented by allowing certain processes to share resources, which sometimes leads to these processes to be called "light weight processes". Similarly, in SunOS version 4 onwards (prior to Solaris) "light weight process" referred to user threads.
