Time ค) I/O operation; processor waits I/O operation; processor waits 2a 2b 3b I/O operation concurrent with processor executing (b) With interrupts (a) Without interrupts Figure 3.10 Program Timing: Short I/O Wait Time I/O operation; processor waits I/O operation concurrent with processor executing I/O operation; processor waits ΘΘ Θ 3 I/O operation concurrent with processor executing; then processor waits I/O operation concurrent with processor executing; then processor waits (b) With interrupts (a) Without interrupts Figure 3.11 Program Timing: Long I/O Wait

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Can you explain what is happening in the diagrams 

Time
ค)
I/O operation;
processor waits
I/O operation;
processor waits
2a
2b
3b
I/O operation
concurrent with
processor executing
(b) With interrupts
(a) Without interrupts
Figure 3.10 Program Timing: Short I/O Wait
Time
I/O operation;
processor waits
I/O operation
concurrent with
processor executing
I/O operation;
processor waits
ΘΘ Θ
3
I/O operation
concurrent with
processor executing;
then processor
waits
I/O operation
concurrent with
processor executing;
then processor
waits
(b) With interrupts
(a) Without interrupts
Figure 3.11 Program Timing: Long I/O Wait
Transcribed Image Text:Time ค) I/O operation; processor waits I/O operation; processor waits 2a 2b 3b I/O operation concurrent with processor executing (b) With interrupts (a) Without interrupts Figure 3.10 Program Timing: Short I/O Wait Time I/O operation; processor waits I/O operation concurrent with processor executing I/O operation; processor waits ΘΘ Θ 3 I/O operation concurrent with processor executing; then processor waits I/O operation concurrent with processor executing; then processor waits (b) With interrupts (a) Without interrupts Figure 3.11 Program Timing: Long I/O Wait
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