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Madeeasy Test Series: Operating System - Process Schedule
For the given question instead of the given order if we take one unit of P2 as its arrival time is 1 and then schedule P1 next we get the same answer,even in the hint they have given as the process which comes first ... and the solution given ends up giving the same answer,does this happen for all cases or just happening for this question?

sripo asked in Operating System Jan 1, 2019

by sripo

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#OS Cpu scheduling doubt about SRTF turning into FCFS.
Let's say we have four processes as (P1, P2, P3, P4) and have Arrival time as (0,1,2,3) respectively, but all of them has same CPU Burst time as (10ms) then does SRTF will simply be behaving like FCFS?

iarnav asked in Operating System Jul 17, 2018

by iarnav

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1 answer

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Na462 asked in Operating System Jul 12, 2018

by Na462

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#Galvin #CpuScheduling SJF VS SRTF Average waiting time doubt.
Let's say we have two CPU scheduling algorithm as SJF and SRTF and we have a arbitrary pool/set of processes with different ARRIVAL TIME and CPU BURST, then what CPU scheduling algorithm will result in minimum average ... of values or when arrival times are different than SRTF will ALWAYS have the less average waiting time over SJF?

iarnav asked in Operating System Jul 11, 2018

by iarnav

2.7k views

3 votes

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5

process Question
Facts about SJF Algorithm: Maximum Throughput Minimum Average TAT Maximum Response Time Maximum CPU Utilization

gulsanchouhan asked in Operating System May 28, 2018

by gulsanchouhan

978 views

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1 answer

6

UGC NET CSE | December 2008 | Part 2 | Question: 8
Four jobs J1, J2, J3 and J4 are waiting to be run. Their expected run times are 9, 6, 3 and 5 respectively. In order to minimize average response time, the jobs should be run in the order: (A) J1 J2 J3 J4 (B) J4 J3 J2 J1 (C) J3 J4 J1 J2 (D) J3 J4 J2 J1

rishu_darkshadow asked in Operating System Sep 25, 2017

by rishu_darkshadow

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2 answers

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Virtual Gate Test Series: Operating System - SJF (Exponential Averaging)
Calculate the Exponential averaging for the $\text{SJF}$ with $T_{1}=10,\alpha = 0.5$ and previous runs as $8,7,4,16$ $\text{(Give the answer correct to one decimal place).}$

Purple asked in Operating System Jan 13, 2017

by Purple

582 views

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SJF Next burst prediction
Please help me in understanding the followign formulae? Prediction of the Length of the Next CPU Burst Pn+1 = a tn +(1-a)Pn This formula defines an exponential average Pn stores the past history tn contents are most recent information the parameter a ... a = 1 then Pn +1 = tn Prediction is last cpu burst I dont want to learn this.Please provide some logical explanation

rahul sharma 5 asked in Operating System Dec 6, 2016

by rahul sharma 5

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Recent questions tagged sjf