[1] : The Free On-line Dictionary of Computing (27 SEP 03)

multitasking
     
         or "multi-tasking", "multi-processing",
        "multiprogramming", "concurrency", "process scheduling" a
        technique used in an operating system for sharing a single
        processor between several independent jobs.  the first
        multitasking operating systems were designed in the early
        1960s.
     
        under "cooperative multitasking" the running task decides
        when to give up the cpu and under "pre-emptive multitasking"
        probably more common a system process called the
        "scheduler" suspends the currently running task after it has
        run for a fixed period known as a "time-slice".  in both
        cases the scheduler is responsible for selecting the next task
        to run and restarting it.
     
        the running task may relinquish control voluntarily even in a
        pre-emptive system if it is waiting for some external event.
        in either system a task may be suspended prematurely if a
        hardware interrupt occurs, especially if a higher priority
        task was waiting for this event and has therefore become
        runnable.
     
        the scheduling algorithm used by the scheduler determines
        which task will run next.  some common examples are
        round-robin scheduling, priority scheduling, shortest job
        first and guaranteed scheduling.
     
        multitasking introduces overheads because the processor
        spends some time in choosing the next job to run and in saving
        and restoring tasks' state, but it reduces the worst-case time
        from job submission to completion compared with a simple
        batch system where each job must finish before the next one
        starts.  multitasking also means that while one task is
        waiting for some external event, the cpu to do useful work
        on other tasks.
     
        a multitasking operating system should provide some degree of
        protection of one task from another to prevent tasks from
        interacting in unexpected ways such as accidentally modifying
        the contents of each other's memory areas.
     
        the jobs in a multitasking system may belong to one or many
        users.  this is distinct from parallel processing where one
        user runs several tasks on several processors.  time-sharing
        is almost synonymous but implies that there is more than one
        user.
     
        multithreading is a kind of multitasking with low
        overheads and no protection of tasks from each other, all
        threads share the same memory.
     
        1998-04-24
     
     
see also:
operating system cooperative multitasking pre-emptive multitasking scheduler time-slice event 
interrupt algorithm round-robin priority scheduling shortest job first 
guaranteed scheduling overheads batch cpu parallel processing 
time-sharing multithreading 

Multitasking >> M Words
Multitasking, definition of term: Multitasking
multitasking_pag1.html

CNN.com - Study: Multitasking is counterproductive - August 5, 2001
...Multitasking is a managerial buzz-concept these days, a post-layoff ... "And in certain cases" of multitasking, Rubenstein says, "you could be ... ..
http://www.cnn.com/2001/CAREER/trends/08/05/multitasking.focus/index.html, score=100, date indexed=February 1, 2006, 11:30 pm

iX - Magazin für professionelle Informationstechnik
... ..
http://www.ix.de/ix/, score=82, date indexed=December 29, 2005, 7:20 pm

Is Multitasking More Efficient?
...... when multitasking. The insight may also weigh against multitasking. ... Thus, multitasking may seem more efficient on the surface, but may ... ..
http://www.apa.org/releases/multitasking.html, score=75, date indexed=January 19, 2006, 11:37 pm

Context Fall 1998 Issue -- Inner Game Of Work: Multitasking Madness
...Another sign of Multitasking Madness is the feeling that your memory ... Yet if you look around you you'll see people multitasking everywhere, ... ..
http://www.contextmag.com/archives/199809/InnerGameOfWork.asp, score=64, date indexed=January 20, 2006, 9:59 am

CNN.com - Study: Multitasking is counterproductive - August 7, 2001
...has some commentary about multitasking and the newly released study ... Multitasking is a managerial buzz-concept these days, a post-layoff ... ..
http://www.cnn.com/2001/CAREER/trends/08/05/multitasking.study/index.html, score=60, date indexed=February 2, 2006, 1:12 am

Multitasking - Wikipedia, the free encyclopedia
...Multitasking may refer to:. *Computer multitasking - the apparent ... Derived from the first sense, multitasking is the colloquial term for ... ..
http://en.wikipedia.org/wiki/Multitasking, score=49, date indexed=December 21, 2005, 4:00 pm

Johannes Auer: Multitasking als Avantgarde
...Lass uns von Multitasking sprechen, sagt Lev. Multitasking ist Collage ... ist nicht Avantgarde als Montage/Collage. Multitasking ist ein Fenster ... ..
http://www.netzliteratur.net/multitasking_dt.htm, score=48, date indexed=January 15, 2006, 1:51 am

CNN.com - Dr. Sanjay Gupta on deceptions in multitasking - August 7, 2001
...... is. We all have many tasks at work, but is multitasking the act of ... I will say that the term multitasking has become synonymous with ... ..
http://www.cnn.com/2001/US/08/07/gupta.debrief.otsc/index.html, score=46, date indexed=December 20, 2005, 4:53 pm

MultiTasking Services (fordítás, fordítóiroda, tolmácsolás, idegenvezetés)
...MultiTasking Services. (fordítás, tolmácsolás, tréning, idegenvezetés) ... ..
http://www.multitasking.hu/, score=45, date indexed=December 30, 2005, 12:01 am

Page 1 2 Next