Forums Assignment Help What is fragmentation? Different types of fragmentation?

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  • #1688
    Pitter John
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    What is fragmentation? Different types of fragmentation?

    #10252
    administrator
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    Fragmentation is a phenomenon in which storage space is used inefficiently, reducing storage capacity and in most cases reducing the performance.

    #10253
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    Fragmentation occurs in a dynamic memory allocation system when many of the free blocks are too small to satisfy any request. External Fragmentation: External Fragmentation happens when a dynamic memory allocation algorithm allocates some memory and a small piece is left over that cannot be effectively used. If too much external fragmentation occurs, the amount of usable memory is drastically reduced.

    #10256
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    Fragmentation occurs in a dynamic memory allocation system when many of the free blocks are too small to satisfy any request.

    #10258
    administrator
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    Fragmentation occurs in a dynamic memory allocation system when many of the free blocks are too small to satisfy any request.

    External Fragmentation: External Fragmentation happens when a dynamic memory allocation algorithm allocates some memory and a small piece is left over that cannot be effectively used. If too much external fragmentation occurs, the amount of usable memory is drastically reduced. Total memory space exists to satisfy a request, but it is not contiguous.

    Internal Fragmentation: Internal fragmentation is the space wasted inside of allocated memory blocks because of restriction on the allowed sizes of allocated blocks. Allocated memory may be slightly larger than requested memory; this size difference is memory internal to a partition, but not being used

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