Consider the cache memory and the mainmemory connected serially. If the word in notfound in cache memory, then it is found in themain memory. Let C1 and C2 be the cachememory in a two-level cache system. Theaccess time of C1 is 3 cycle, access time of C2is 15 cycle and the access time of main memoryis 50 cycle. The miss rate of is 10% and 20% ofC1 and C2 respectively. The average memoryaccess time of the system is cycle.

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nd the main the word in n t is found in t be the cache ystem. The

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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Concept explainers

Types of database architectures

A Database Architecture represents the Database Management System’s (DBMS) design (schema). The DBMS architecture makes it easy to understand the components involved in the database system and their relations. The DBMS architecture may vary based on the system on which it runs. Some systems contain both client and server machines whereas some run only on a server machine. Based on the architecture, the system can be classified as centralized, decentralized, or hierarchical.

Question

Consider the cache memory and the main
memory connected serially. If the word in not
found in cache memory, then it is found in the
main memory. Let C1 and C2 be the cache
memory in a two-level cache system. The
access time of C1 is 3 cycle, access time of C2
is 15 cycle and the access time of main memory
is 50 cycle. The miss rate of is 10% and 20% of
C1 and C2 respectively. The average memory
access time of the system is cycle.

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