Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Difference Between Internal and External fragmentation
In this post, we will understand the difference between internal and external fragmentation −
Internal Fragmentation
The difference between the memory allocated and the space required is known as internal fragmentation.
In this fragmentation, fixed-sized memory blocks are used to process data.
This process occurs when a method or process is larger than the required memory.
The method used in internal fragmentation is ‘best-fit’ block.
It occurs when the memory is divided into fixed sized partitions.
External Fragmentation
The unused spaces that is formed between fragments of non-contiguous memory, which are too small to help with a new process, is known as external fragmentation.
It uses variable-sized memory blocks to process data.
This type of fragmentation occurs when a method or process is removed.
It can be used with compaction, paging and segmentation.
External fragmentation occurs when memory is divided into variable sized partitions (that is based on size of process).
715 Views
