no.
muje pta hota tho ish site par kya karti
It is SJF.
Shortest Job First (SJF) scheduling algorithm selects the process with the smallest burst time for execution next, which helps in reducing average waiting time. Shortest Remaining Time First (SRTF), on the other hand, preempts the currently running process if a new process with a smaller burst time arrives, resulting in even lower waiting times but with increased context switching.
yes in the preemptive sjf where every time the system recieve job shorter than the current it stop the current and start the new one
short job first (SJF) is a job scheduling algorithm where shorter jobs are favored for being serviced first. this increases the overall system's number of processed jobs but has the disadvantage that long jobs can face starvation in waiting state irrespective to their wait time..
Shortest Job First (SJF) scheduling and priority scheduling are both CPU scheduling algorithms used in operating systems to manage process execution. SJF selects processes based on the shortest estimated execution time, while priority scheduling selects processes based on their assigned priority levels. In some cases, SJF can be viewed as a specific type of priority scheduling where the priority is inversely related to the job length—the shorter the job, the higher its priority. Thus, both approaches aim to optimize CPU utilization but differ in the criteria they use for process selection.
find primitive sjf? with avg waiting time and TAW? P Bust TIme Arivel time p1 5 1 p2 3 0 p3 2 2 p4 4 3 p5 8 2
Yes, a scheduling algorithm can be designed to maximize throughput, which refers to the number of tasks completed in a given time period. Such algorithms prioritize task execution based on factors like resource availability, task priority, and execution time, aiming to minimize idle time and maximize resource utilization. Examples include Shortest Job First (SJF) and Round Robin scheduling. However, achieving maximum throughput may require trade-offs, such as increased waiting times for some tasks.
IN QUEueing theory,it is like how we serve people in waiting line --- 1.fcfs 2.round robin 3.sjf 4. siro 5.fifo
In that work system, the shortest job gets higher priority because more gets accomplished in any amount of time. If you have two hours to do 4 tasks and one task will take five minutes, one will take 30 minutes, one will take an hour and one will take an hour and a half, by using the shortest job first method, you will accomplish three tasks in those two hours and part of the fourth task. If you do the longest job first, you will accomplish the task that takes an hour and a half, then only part of the one hour task, but nothing on the 5 minute or 30 minute tasks. That means that by doing the shortest jobs first, you will accomplish three times as many tasks as you will by doing the longest jobs first.
Shortest Job First (SJF) scheduling prioritizes processes with the smallest execution time, leading to faster turnaround times for short jobs and improved overall system efficiency. However, it can lead to the "starvation" of longer jobs, as they may be perpetually preempted by shorter tasks. Additionally, accurately predicting job lengths can be challenging, potentially complicating the scheduling process. Overall, while SJF can optimize performance in some scenarios, it may not be suitable for all workloads.