26. A system has four processes and five allocatable resources. The current allocation and maximum needs are as follows: Available 00 x 1 1 Allocated Махітит Process A 10 211 11213 Process B 20110 22210 Process C Process D 11010 21310 1111 0 11221 What is the smallest value of x for which this is a safe state?

26. A system has four processes and five allocatable resources. The current allocation and maximum needs are as follows: Available 00 x 1 1 Allocated Махітит Process A 10 211 11213 Process B 20110 22210 Process C Process D 11010 21310 1111 0 11221 What is the smallest value of x for which this is a safe state?

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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An operating system uses a total of two units of the resource R for each of its three user processes. The operating system uses a total of 12 units of R. The absolute minimum number of R units that must be used to guarantee that there are no deadlocks is
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a. Three processes share four resource units that can be reserved and released only one at a time. Each process needs a maximum of two units. Show that a deadlock cannot occur. b. N processes share M resource units that can be reserved and released only one at a time. The maximum need of each process does not exceed M, and the sum of all maximum needs is less than M + N. Show that a deadlock cannot occur.
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operating system.
An operating system is comprised of three user processes, and each of these user processes uses a combined total of two units of the resource R. The operating system makes total utilization of twelve units of R in its operation. The very bare minimum number of R units that must be used in order to guarantee that there are no deadlocks is
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A system has four processes, viz. P1 to P4, and three resource types. The system is in a safe state with 011] Available [111], Max = 624 435 L121 granted? (a) Request = [1 0 1] from P3. (b) Request [101] from P2. and Allocation = [001] 423 333 10 2 1. Which of the following requests should be