Round Robin Turnaround Time

Status
This thread has been Locked and is not open to further replies. Please start a New Thread if you're having a similar issue. View our Welcome Guide to learn how to use this site.

llckll

Thread Starter
Joined
Apr 8, 2004
Messages
70
:confused: :confused: :confused:
i'm not sure if this is the right place to post up a question like this, but i'm trying to review and learn some stuff on my own. this is about round-robin scheduling .. and the question goes something like this.....

------------------------
suppose that we have a multiprogrammed computer in which each job has identical characteristics. In one computation period, T, for a job, 1/4 the time is spent in I/O and the other 3/4 in processor activity. Each job runs for a total of N periods. Assume that a simple round-robin scheduling is used, and that I/O operations can overlap with processor operation. Define the

following quantities:
-Turnaround Time (TAT) = actual time to complete a job
-Throughput = average number of jobs completed per time period T
-Processor utilization = percentage of time that the processor is active (not waiting)

Compute these quantities for three simultaneous jobs, assuming that the period T is distributed in such a way that I/O is for first 1/4 and processor is for next 3/4.
------------------------------

what i understand so far from doing research online is that....

Tq = total quantum
p = process
q = quantum
TAT = turnaround time

TAT = (n-1)Tq and Tq = p x q

and

Throughput = (sum of) time for jobs to complete / Number of completed jobs

i'm not really sure how to solve this problem.. any explanations will be great..

thank you very much....
:confused: :confused: :confused:
 
Status
This thread has been Locked and is not open to further replies. Please start a New Thread if you're having a similar issue. View our Welcome Guide to learn how to use this site.

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

As Seen On
As Seen On...

Welcome to Tech Support Guy!

Are you looking for the solution to your computer problem? Join our site today to ask your question. This site is completely free -- paid for by advertisers and donations.

If you're not already familiar with forums, watch our Welcome Guide to get started.

Join over 807,865 other people just like you!

Latest posts

Staff online

Members online

Top