1. The sequence of states of an executing program. A process consists of the program code (which may be shared with other processes which are executing the same program), private data, and the state of the processor, particularly the values in its registers. It may have other associated resources such as a process identifier, open files, CPU time limits, shared memory, child processes, and signal handlers.One process may, on some platforms, consist of many threads. A multitasking operating system can run multiple processes concurrently or in parallel, and allows a process to spawn "child" processes.
Last updated: 2001-06-16
2. The sequence of activities, people, and systems involved in carrying out some business or achieving some desired result. E.g. software development process, project management process, configuration management process.
Last updated: 2001-06-16
Process and Experiment Automation Real-Time Language
Last updated: 2000-08-16
process datadata processing
Process Design Language 2
Last updated: 1995-08-13
process IDprocess identifier
Last updated: 1996-12-09
Performing some predefined sequence of operations on an input to produce an output or change of internal state; activity specifically involving the computer's CPU.The term is often qualified: "data processing" treats digital data, "signal processing" treats analog data (possibly in digital form), "word processing" takes in typed human language input and produces digital documents, image processing transforms digital images.
Last updated: 2003-10-23
processorcentral processing unit
Processor Direct Slot
Last updated: 1995-05-02
A parallel processor where tasks are distributed, or "farmed out", by one "farmer" processor to several "worker" processors, and results are sent back to the farmer. This arrangement is suitable for applications which can be partitioned into many separate, independent tasks, the canonical examples being ray tracing and the Mandelbrot set. In order to be efficient, the extra time spent on communications must be small compared to the time spent processing each task.
Last updated: 2001-05-28
Processor System Modeling Language
Last updated: 2009-05-11
The amount of time a process takes to run, given that it has exclusive and uninterrupted use of the CPU. Note that in a modern computer, this would be very unusual, and so the processor time calculation for most processes involves adding up all the small amounts of time the CPU actually spends on the process.Some systems break processor time down into user time and system time. Compare wall clock time.
Last updated: 1998-03-13
process tableprocess control blocks and contain the following information: process state - information needed so that the process can be loaded into memory and run, such as the program counter, the stack pointer, and the values of registers. memory state - details of the memory allocation such as pointers to the various memory areas used by the program resource state - information regarding the status of files being used by the process such as user ID. Accounting and scheduling information. An example of a UNIX process table is shown below.
SLOT ST PID PGRP UID PRI CPU EVENT NAME FLAGS 0 s 0 0 0 95 0 runout sched load sys 1 s 1 0 0 66 1 u init load 2 s 2 0 0 95 0 10bbdc vhand load sysSLOT is the entry number of the process. ST shows whether the process is paused or sleeping (s), ready to run (r), or running on a CPU (o). PID is the process ID. PGRP is the process Group. UID is the user ID. PRI is the priority of the process from 127 (highest) to 0 (lowest). EVENT is the event on which a process is paused or sleeping. NAME is the name of the process. FLAGS are the process flags. A process that has died but still has an entry in the process table is called a zombie process.
Last updated: 1998-04-24