Unsolved
This post is more than 5 years old
1 Message
0
2615
May 15th, 2011 18:00
ISM question on disk utilization
Can someone explain how these calculations are done ?
Consider a disk I/O system in which an I/O request arrives at a rate of 100 IOPS and the service time is 4 ms.
What is the utilization?
A. 40%
B. 10%
C. 80%
D. 4%
Answer:
A
No Events found!
Shawky1
16 Posts
0
May 18th, 2011 08:00
Rs: service time is 4ms = 4/1000 sec
a: arrive rate of 100 IOPS
U= a * Rs
=100 * (4/1000) = 0.4
So the Utilization percentage would be 40%