In software engineering, busy waiting or spinning is a technique in which a process repeatedly checks to see if a condition is true, such as waiting for keyboard input or waiting for a lock to become available. It can also be used to delay execution for some amount of time; this was necessary on old computers that had no method of waiting a specific length of time other than by repeating a useless loop a specific number of times, but on modern computers with clocks and different processor speeds, this form of time delay is often inaccurate and a sign of a naïve attempt at programming. Spinning can be a valid strategy in certain special circumstances, most notably in the implementation of spinlocks within operating systems designed to run on SMP systems. In general, however, it is considered an anti-pattern and should be avoided, as the CPU time spent waiting could have been reassigned to another task.
http://en.wikipedia.org /wiki/Busy_spin

Answered by Nishu's , an ibibo Master, at 1:27 PM on October 24, 2008

In software engineering, busy waiting or spinning is a technique in which a process repeatedly checks to see if a condition is true, such as waiting for keyboard input or waiting for a lock to become available. It can also be used to delay execution for some amount of time; this was necessary on old computers that had no method of waiting a specific length of time other than by repeating a useless loop a specific number of times, but on modern computers with clocks and different processor speeds, this form of time delay is often inaccurate and a sign of a naïve attempt at programming. Spinning can be a valid strategy in certain special circumstances, most notably in the implementation of spinlocks within operating systems designed to run on SMP systems. In general, however, it is considered an anti-pattern and should be avoided, as the CPU time spent waiting could have been reassigned to another task.

Answered by Ashish Yadav , an ibibo Wizard, at 5:58 PM on October 22, 2008

In software engineering, busy waiting or spinning is a technique in which a process repeatedly checks to see if a condition is true, such as waiting for keyboard input or waiting for a lock to become available. It can also be used to delay execution for some amount of time; this was necessary on old computers that had no method of waiting a specific length of time other than by repeating a useless loop a specific number of times, but on modern computers with clocks and different processor speeds, this form of time delay is often inaccurate and a sign of a naïve attempt at programming. Spinning can be a valid strategy in certain special circumstances, most notably in the implementation of spinlocks within operating systems designed to run on SMP systems. In general, however, it is considered an anti-pattern and should be avoided, as the CPU time spent waiting could have been reassigned to another task.

Answered by Sandeep , an ibibo Citizen, at 3:57 PM on October 22, 2008

The repeated execution of a loop of code while waiting for an event to occur is called busy-waiting. The CPU is not engaged in any real productive activity during this period, and the process does not progress toward completion.

Answered by Hem@nt .... , an ibibo Master, at 2:57 PM on October 22, 2008

Well Shyamal! The repeated execution of a loop of code while waiting for an event to occur is called busy-waiting. The CPU is not engaged in any real productive activity during this period, and the process does not progress toward completion.

http://www.ittestpap ers.com/articles/511/2/-Frequently- Asked-Questions---Operating-System- Concepts/Page2.html

Answered by Kumaar , an ibibo Master, at 2:23 PM on October 22, 2008

In software engineering, busy waiting or spinning is a technique in which a process repeatedly checks to see if a condition is true, such as waiting for keyboard input or waiting for a lock to become available. It can also be used to delay execution for some amount of time; this was necessary on old computers that had no method of waiting a specific length of time other than by repeating a useless loop a specific number of times, but on modern computers with clocks and different processor speeds, this form of time delay is often inaccurate and a sign of a naïve attempt at programming. Spinning can be a valid strategy in certain special circumstances, most notably in the implementation of spinlocks within operating systems designed to run on SMP systems. In general, however, it is considered an anti-pattern and should be avoided, as the CPU time spent waiting could have been reassigned to another task

Answered by raj u , an ibibo Master, at 2:12 PM on October 22, 2008

well jatin ,
busy waiting or spinning is a technique in which a process repeatedly checks to see if a condition is true, such as waiting for keyboard input or waiting for a lock to become available. It can also be used to delay execution for some amount of time; this was necessary on old computers that had no method of waiting a specific length of time other than by repeating a useless loop a specific number of times, but on modern computers with clocks and different processor speeds, this form of time delay is often inaccurate and a sign of a naïve attempt at programming. Spinning can be a valid strategy in certain special circumstances, most notably in the implementation of spinlocks within operating systems designed to run on SMP systems. In general, however, it is considered an anti-pattern and should be avoided, as the CPU time spent waiting could have been reassigned to another task

Answered by Venkata , an ibibo Specialist, at 1:50 PM on October 22, 2008

The repeated execution of a loop of code while waiting for an event to occur is called busy-waiting. The CPU is not engaged in any real productive activity during this period, and the process does not progress toward completion.

Answered by M P , an ibibo Master, at 1:48 PM on October 22, 2008