| Cache | ||
| Modern software usually requires a large amount of memory
in a computer in order to operate.
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Most computers use a part of the hard disk as extra memory. Data stored in
memory which is not actually needed immediately is temporarily moved into
the disk cache and moved back into memory
when it is needed.
The computer will seem to have more memory than it really has. |
Access from disk is much slower than from RAM so the speed of operation will be reduced if disk cache is used. | |
| Exercise : Cache | ||
| Disk cache is an area of disk which is used as
extra
.
The speed of operation of the computer will be slightly when disk cache is used.
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| (Green indicates success) | ||