There are two ways by which Input/output subsystems can improve the performance and efficiency of the computer by using a memory space in the main memory or on the disk and these two are spooling and buffering.
Spooling stands for Simultaneous peripheral operation online. A spool is similar to buffer as it holds the jobs for a device until the device is ready to accept the job. It considers disk as a huge buffer that can store as many jobs for the device till the output devices are ready to accept them.
The main memory has an area called buffer that is used to store or hold the data temporarily that is being transmitted either between two devices or between a device or an application. Buffering is an act of storing data temporarily in the buffer. It helps in matching the speed of the data stream between the sender and the receiver. If the speed of the sender’s transmission is slower than the receiver, then a buffer is created in the main memory of the receiver, and it accumulates the bytes received from the sender and vice versa.
The basic difference between Spooling and Buffering is that Spooling overlaps the input/output of one job with the execution of another job while the buffering overlaps the input/output of one job with the execution of the same job.
Differences between Spooling and Buffering –
- The key difference between spooling and buffering is that Spooling can handle the input/output of one job along with the computation of another job at the same time while buffering handles input/output of one job along with its computation.
- Spooling stands for Simultaneous Peripheral Operation online. Whereas buffering is not an acronym.
- Spooling is more efficient than buffering, as spooling can overlap processing two jobs at a time.
- Buffering uses limited area in main memory while Spooling uses the disk as a huge buffer.
Comparison chart –
|Basic Difference||It overlap the input/output of one job with the execution of another job.||It overlaps the input/output of one job with the execution of the same job.|
|Full form (stands for)||Simultaneous peripheral operation online||No full form|
|Efficiency||Spooling is more efficient than buffering.||Buffering is less efficient than spooling.|
|Consider Size||It considers disk as a huge spool or buffer.||Buffer is a limited area in main memory.|
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