Resource Allocation Techniques for Processes Last Updated : 14 May, 2023 Comments Improve Suggest changes Like Article Like Report The Operating System allocates resources when a program need them. When the program terminates, the resources are de-allocated, and allocated to other programs that need them. Now the question is, what strategy does the operating system use to allocate these resources to user programs? There are two Resource allocation techniques: 1. Resource partitioning approach - In this approach, the operating system decides beforehand, that what resources should be allocated to which user program. It divides the resources in the system to many resource partitions, where each partition may include various resources - for example, 1 MB memory, disk blocks, and a printer. Then, it allocates one resource partition to each user program before the program's initiation. A resource table records the resource partition and its current allocation status (Allocated or Free). Advantages: Easy to ImplementLess Overhead Disadvantages: Lacks flexibility - if a resource partition contains more resources than what a particular process requires, the additional resources are wasted.If a program needs more resources than a single resource partition, it cannot execute (Though free resources are present in other partitions). An Example Resource Table may look like this:- The above Resource Table is of the time of Booting. Resource Table is the core data structure that is used in the resource allocation techniques. Resource Table contains resource partitions as entries rather than single resources. 2. Pool based approach - In this approach, there is a common pool of resources. The operating System checks the allocation status in the resource table whenever a program makes a request for a resource. If the resource is free, it allocates the resource to the program. Advantages: Allocated resources are not wasted.Any resource requirement can be fulfilled if the resource is free (unlike Partitioning approach) Disadvantages: Overhead of allocating and de-allocating the resources on every request and release. Comment More infoAdvertise with us Next Article Resource Allocation Techniques for Processes T TanyaSethi Follow Improve Article Tags : Misc Operating Systems Practice Tags : Misc Similar Reads Resource Allocation To assign the available resources in an economic way is known as resource allocation. The planning of the activities and the resource required by these activities while taking into consideration both resources availability and project time is termed as resource allocation in project management. Ther 2 min read Reasons for Processes Termination A process in an operating system can be terminated when certain errors or default conditions occur. 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