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Recent questions tagged process

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32
Galvin Edition 9 Exercise 3 Question 3 (Page No. 150)
Original versions of Apple’s mobile iOS operating system provided no means of concurrent processing. Discuss three major complications that concurrent processing adds to an operating system.
Original versions of Apple’s mobile iOS operating system provided no means of concurrent processing. Discuss three major complications that concurrent processing adds t...
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33
Galvin Edition 9 Exercise 3 Question 2 (Page No. 149-150)
Including the initial parent process, how many processes are created by the following program. #include <stdio.h> #include <unistd.h> int main() { fork(); fork(); fork(); return 0; }
Including the initial parent process, how many processes are created by the following program.#include <stdio.h>#include <unistd.h>int main(){fork(); fork(); ...
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37
synchronization
test and set is used to implement Lock / Unlock to avoid BUSSY WAITING. above statement is true or false?
test and set is used to implement Lock / Unlock to avoid BUSSY WAITING.above statement is true or false?
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38
doubt
is this preemptive or non-preemptive?
is this preemptive or non-preemptive?
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42
Process States-Doubt
when a process is in wait/blocked state it is in MM/disk/buffer?
when a process is in wait/blocked state it is in MM/disk/buffer?
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43
Process state
A printf or malloc takes the process to what state? Running Ready Suspended Terminated
A printf or malloc takes the process to what state?RunningReadySuspendedTerminated
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44
OS doubt
Explain how.. Context Switch overhead is less in thread based systems compared to process based systems.
Explain how..Context Switch overhead is less in thread based systems compared to process based systems.
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2 answers
45
Doubt on OS
If an Interrupt occurs during process executing in CPU then the process will move RUN to READY or RUN to WAIT/BLOCK ?
If an Interrupt occurs during process executing in CPU then the process will move RUN to READY or RUN to WAIT/BLOCK ?
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46
Operating System
What is the difference between a job,a process and a thread?
What is the difference between a job,a process and a thread?
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47
Process Doubt
How to decide which job is I/O bound or CPU bound?
How to decide which job is I/O bound or CPU bound?
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48
Operating System
Which data structure is used to implement the Process Control Block?
Which data structure is used to implement the Process Control Block?
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49
Operatin system Galvin
Why shortest job first is not practically implementable. There are two possible answers 1. Starvation 2. Burst time of processes cannot be known ahead. So i am not getting the meaning of 2nd answer.
Why shortest job first is not practically implementable. There are two possible answers1. Starvation2. Burst time of processes cannot be known ahead.So i am not getting t...
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51
Threads
According to me Answer is C, because Multithreading i.e. User application threads cannot use different processors because processor see all the thread of user process as part of one process so it wont execute on Different Processors. Am i right ? But answer given is (A)
According to me Answer is C, because Multithreading i.e. User application threads cannot use different processors because processor see all the thread of user process as ...
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54
Process (fork() and condition operators)
#include <stdio.h> #include <unistd.h> int main() { fork(); fork() && fork() || fork(); fork(); printf("forked\n"); return 0; } //How this works specially the level 2 fork() // with && ||
#include <stdio.h>#include <unistd.h>int main(){fork();fork() && fork() || fork();fork();printf("forked\n");return 0;} //How this works specially the level 2 fork() // wi...
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4 answers
56
Threads
The primary difference between process and thread ? (A) The number of I/O requests mode. (B) The amount of overhead associated with creation and context switching . (C) The amount of memory allocation (D) The average number of instructions executed
The primary difference between process and thread ?(A) The number of I/O requests mode.(B) The amount of overhead associated with creation and context switching .(C) The ...
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57
OS:- Threads
Why threads have less context than process? Context means various attributes that we store in the PCB,so the attributes like state,property,PC,etc.. should be there in both process and thread.So,how thread have less context than process?
Why threads have less context than process? Context means various attributes that we store in the PCB,so the attributes like state,property,PC,etc.. should be there in b...
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59
Self doubt
If inefficiency of scheduling algorithm is $\frac{Burst Time wasted}{Total Burst Time} X 100$ Why do we have to multiply with 100?
If inefficiency of scheduling algorithm is $\frac{Burst Time wasted}{Total Burst Time} X 100$Why do we have to multiply with 100?
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60
Question
On a system with N CPU, what is the maximum number of processes that can be in running state ? A) N process B)Depend on the processes in ready state C) Can't say
On a system with N CPU, what is the maximum number of processes that can be in running state ?A) N processB)Depend on the processes in ready stateC) Can't say
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