Suppose a system has 8Mb of memory. Illustrate the following sequence of memory requests by drawing the allocation table after each request. Use dynamic partitioning with a first-fit placement strategy. If a request cannot be satisfied immediately, it is delayed until it CAN be satisfied: Process P1 P2 23 21 P3 P4 Request Requests 2Mb Requests 4Mb Requests 2Mb Terminates and returns 2Mb to the operating system. Terminates and returns 2Mb to the operating system. Requests 2Mb

Suppose a system has 8Mb of memory. Illustrate the following sequence of memory requests by drawing the allocation table after each request. Use dynamic partitioning with a first-fit placement strategy. If a request cannot be satisfied immediately, it is delayed until it CAN be satisfied: Process P1 P2 23 21 P3 P4 Request Requests 2Mb Requests 4Mb Requests 2Mb Terminates and returns 2Mb to the operating system. Terminates and returns 2Mb to the operating system. Requests 2Mb

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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Consider a computer system with five memory partitions of 300 KB, 400 KB, 200 KB, 100 KB, and 500 KB (in order), and four processes of 212 KB, 417 KB, 112 KB, and 326 KB (in order). a. How would the "best-fit" algorithm allocate the processes into memory partitions? b. Calculate the total size of internal fragmentation (in KB). Show the steps of your solution.
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Given there are six free memory partitions of sizes 100KB, 30OKB, 500KB, 550KB, 250KB and 150KB, respectively in that order. These partitions need to be allocated to five processes of sizes 257KB, 310KB, 68KB, 119KB, 23KB in that order. Assume that the search for free partitions starts from the first memory partition. If the NEXT-FIT algorithm is used with DYNAMIC memory allocation approach, list the sizes of free partitions (holes) available after memory allocation to the five given processes.
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