Found 2065 Articles for Operating System

Segmentation in Operating System

Pranavnath
Updated on 18-Jul-2023 17:02:25

4K+ Views

In the Operating System, Segmentation is mainly useful to maintain the modular structure of a program. The purpose of using segmentation is to achieve the user's view of memory allocation similarly when paging does not bother where programs start and end and it simply divides the program into pages. The non-adjacent memory allocation technique can be divided into two types namely paging and segmentation. In segmentation, the program is not divided randomly or with a variable size but with a fixed page. Segmentation in OS The segmentation technology is used in operating systems and the process is divided into many ... Read More

Segment Descriptor

Pranavnath
Updated on 18-Jul-2023 17:01:31

903 Views

In an operating system, segmentation is termed a memory management technique where the memory is divided into segments that can be allocated to a process. These segments may not be in fixed length and not stored in a contagious manner. This approach has been developed after the paging process which takes multiple pages for a process to get loaded into main memory, whereas segmentation divided the code into segments as its relative code can be merged to form a single block. The segment table holds all the details relating to the segments and the processes. Generating a logical address which ... Read More

Seek Time vs Transfer Time in Disk Scheduling

Pranavnath
Updated on 18-Jul-2023 16:56:18

173 Views

Within the domain of computer frameworks and capacity gadgets, the execution of disk planning plays an essential part in optimizing information get to and recovery. Two basic components that altogether affect disk execution are seek time and transfer time. Seek time speaks to the length it takes for the disk arm to move to the specified track, whereas transfer time signifies the time required to examined or type in information once the required track is situated. This article points to investigate and explain the elemental contrasts between seek time and transfer time, shedding light on their person importance in disk ... Read More

SCAN vs FCFS in Disk Scheduling Algorithm

Pranavnath
Updated on 18-Jul-2023 16:54:46

183 Views

Disk scheduling algorithms play a pivotal part in optimizing the execution of disk frameworks by proficiently getting to information. Among the different calculations, Scan (moreover known as the elevator algorithm) and FCFS (First-Come-First-Serve) are two commonly utilized approaches with particular procedures. Check moves the disk arm over the platter in a specific design, adjusting demands because it clears in one course, which minimizes the look for time and improves productivity. On the other hand, FCFS follows a straightforward guideline of servicing the demands within the arrangement they arrive at, without any thought for the area of information on the disk. ... Read More

Scheduling in Real time Systems

Pranavnath
Updated on 18-Jul-2023 16:52:28

3K+ Views

A real-time system comprises real tasks or applications which need to get processed without any delay. In this system, a time-bound approach is followed for fixed time constraints and the tasks have to be processed within the time constraints. This timing constraint is termed the deadline for real-time tasks. The requirements specified for real-time systems are given by timelines and predictability, where timelines denote how near/close the task to the deadline given is and predictability defines the amount of deviation that occurs in the timelines that are delivered. Real-time Systems Traditional scheduling algorithms like priority-based ones, give priority to some ... Read More

Scheduling without Deadline

Pranavnath
Updated on 18-Jul-2023 16:49:42

143 Views

In the field of computer science, scheduling tasks and processes proficiently is a significant perspective of optimizing resource utilization and moving forward by and large framework execution. Traditional scheduling problems regularly include relegating tasks with particular deadlines to resources, pointing to meet those deadlines whereas minimizing costs or maximizing throughput. Be that as it may, in certain scenarios, scheduling without deadlines gets to be a significant and curious issue to address. This article investigates the concept of scheduling without deadlines and its noteworthiness in computer science. Understanding Scheduling without Deadlines Scheduling without deadlines refers to the allocation of tasks ... Read More

Scheduling with Deadline

Pranavnath
Updated on 18-Jul-2023 16:47:56

310 Views

Within the field of computer science, productive task scheduling plays a pivotal part in optimizing resource allocation and assembly time constraints. Scheduling with deadlines is a principal concept that spins around allocating tasks or processes to resources while considering time limitations or deadlines. The objective is to ensure that tasks are completed within their assigned time limits, minimizing lateness, and ensuring timely execution. This article explores the concept of scheduling with deadlines in computer science, its significance in different spaces, and the approaches and procedures utilized to meet time constraints. It dives into the challenges related to scheduling tasks within ... Read More

SetUID, SetGID, and Sticky Bits in Linux File Permissions

Pranavnath
Updated on 18-Jul-2023 16:31:00

709 Views

File permission in a Linux environment provides privileges to the owner or administrators to execute programs or applications. Permissions are set for the files or directories using chmod and chown commands with read, write and execute notations. Special permissions such as setuid, setgid, and sticky bits are initiated for executable files or directories; the user needs to pay more attention when these special permissions are set because they may impose security risks to all other users. Each file present in the directories has userId termed as uid and groupId as gid specified by the owner of the file, to execute ... Read More

Segmented Paging

Pranavnath
Updated on 18-Jul-2023 16:29:49

1K+ Views

In the operating system, segmented paging provides better performance and utilization of the CPU as it combines the process of segmentation and paging. Segmentation is termed a memory management technique where the memory is divided into segments that can be allocated to a process. These segments may not be in fixed length and not stored in a contagious manner. The segment table holds all the details relating to the segments and the processes. Generating a logical address which is converted to a physical address by the CPU by refereeing to the segment table. This table contains two fields about the ... Read More

Selfish Round Robin CPU Scheduling

Pranavnath
Updated on 18-Jul-2023 16:27:40

395 Views

Scheduling algorithms in the operating system execute the processes based on their arrival time or by their priority. Each algorithm chooses the processes that are in waiting to ready queue by preemption or non-preemption methods. Preemptive algorithms provide access to the CPU to the process which has higher priority and preempt any other process which is already running with lower priority. But in the case of non-preemptive scheduling, when processes start their execution, it cannot be preemptive even when higher priority processes are in the ready state. The traditional round-robin scheduling algorithm is a preemptive one where each process gets ... Read More

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