Consider a disk drive specifications. with the following 16 surfaces, 512 tracks/surface, 512 sectors/ track, 1 KB/sector, rotation speed 3000 rpm. The disk is operated in cycle stealing mode whereby whenever one byte word is ready it is sent to memory; similarly, for writing, the disk interface reads a 4 byte word from the memory in each DMA cycle. Memory cycle time is 40 nsec. The maximum percentage of time that the CPU gets blocked during DMA operation?

Q: Consider a disk that rotates at 3600 rpm. The seek time to move the head between ad- jacent tracks…

A: According to the information given:- We have to follow the instruction in order to get how long will…

Q: Consider a computer with byte-addressable main memory of size 1 GB and page size of 4 KB. Assume a…

A:

Q: 01 Contider a disk pack with 16 srfaces, 12 tracks per surface and 256 soctors per track 312 bytes…

A: Given : Number of surfaces = 16 Tracks per surface  = 128 Sectors per track = 256  Storage of each…

Q: Consider a single-platter disk with the following parameters: rotation speed:7200 rpm; number of…

A:

Q: Let a disk pack has 32 surfaces having 1 track per surface, 16 sector per track and 512 bytes per…

A: Capacity of a disk- It is the maximum amount of data a disc, a disk, or drive is capable of…

Q: Consider a Disk I/O transfer, in which 1500 bytes are to be transferred, but number of bytes on a…

A: Given data: Transferred bytes (b)=1500 bytes  Rotation speed (r)=1500 Number of bytes on track…

Q: Consider a computer system that uses virtual memory with paging (no TLB). Suppose main access time…

A: Paging technique means dividing virtual memory into equal size partitions called pages and storing…

Q: Consider a disk with the following characteristics: block size 512 bytes, number of blocks per…

A: Given, Block size=512 bytes Number of blocks per track=20 Number of tracks per surface=400 Track…

Q: A file system with 300GB uses a file descriptor with 8 direct block address. 1 indirect block…

A: INTRODUCTION: In the index node of the Unix file system: Direct block pointer = 8 Single indirect…

Q: Suppose a processor sends 40 disk I/Os per second, these requests are exponentially distributed, and…

A: Answer is given below

Q: A computer has instructions that each require two bus cycles, one to fetch the instruc- tion and one…

A:

Q: Consider a disk that rotates at 3600 rpm. The seek time to move the head between ad- jacent tracks…

A: Given data,   Disk rotation speed: 3600rpm   Seek time: 2ms   Sectors per track: 32   Read/write…

Q: What is the highest percentage of the memory bus capacity that could be consumed by the disk’s DMA…

A: Think of a bus as a highway that different parts of the computer system use to send information to…

Q: Let's pretend for a moment that we have a byte-addressable computer with 16-bit main memory…

A: The hierarchy of virtual memory in current computer systems is a sophisticated network of caches and…

Q: Suppose you are asked to design a rotating disk where the number of bits per track is constant. You…

A: Consider the information given:

Q: Suppose the price of memory falls by half, and the speed of disk access (number of accesses per…

A: Answer: Below is the detailed answer:

Q: On a floppy disk (or a hard disk) the heads on all the surfaces will be in the same relative…

A: « Formerly, legacy systems consisted of a main circuit board known as the PC's motherboard. « The…

Q: Suppose the price of memory falls by half, and the speed of disk access (number of accesses per…

A: GIVEN: Suppose the price of memory falls by half, and the speed of disk access (number of…

Q: Consider a disk with a sector size of 512 bytes, 2000 tracks per surface, 50 sectors per track, five…

A: (1) Capacity of track = bytes/sector * sectors/track = 512 * 50 = 25K in bytes i.e. 25K Capacity of…

Q: onsider a disk with the following characteristics

A: The question is asking for the capacity of a track and the capacity of the disk based on given…

Q: Consider a program that performs the following steps repeatedly: Use the CPU for 4 milliseconds. By…

A: The program in question uses CPU, disk, and network resources to iteratively go through a series of…

Q: With drawing Compute the Average access time for memory system when the time for Main Memory is 2000…

A: A form of resource management, which is applied to computer memory is called memory management. In…

Q: A Magnetic surface has 64 tracks (To to T63), One track has 256 sectors (So to S255). One sector…

A:

Q: What is the point of using cache memory if we already have volatile RAM (Random Access Memory)?…

A: Introduction : Cache memory is a type of high-speed memory that is located directly on the processor…

Q: What is the maximum number of jobs that can be in progress at once? (1 point) b) Compute the maximum…

A: Answer is explained below in detail

Q: stealing mode whereby whenever one 4 byte for writing, the disk interface reads a 4 byte SO00 pem.…

A: Answer:-25%

Q: Consider a disk with following specifications: 20 surface, 1000 tracks/surface, 16 sectors/track,…

A: According to the information given:- We have to follow the instruction in order to get data transfer…

Q: Suppose that you are working with a CISC machine using a 1.6 GHz clock (i.e., the clock ticks 1.6…

A: A 1.6GHz processor has a cycle rate of 1,600,000,000 per second. In 2.8 milliseconds, the CPU may do…

Q: Let's say in a system, it takes 8 milliseconds to service a page fault if an empty page is available…

A: Introduction :Given , Page fault service time = 8 ms service time if page is modified = 20 ms memory…

Q: Consider a disk pack with a seek time of 4 milliseconds and rotational speed of 10000 rotations per…

A: Introduction  given ,  Disk pack, seek time = 4 ms  Rotational speed = 10000 rpm  Sectors per track…

Q: A file system with 300 GByte disk uses a file descriptor with 8 direct block addresses, I indirect…

A: The question is to find the maximum possible file size in this file system for thr given…

Q: In the table below, to have 8 memory addresses where each memory address holds one byte of data…

A: With n bits, we can identify 2n different memory locations. For example, 1 bit: 21 = 22 bits: 22 =…

Q: Consider a single-platter disk with the following parameters: rotation speed:7200 rpm; number of…

A: Given Data: Rotation Speed = 7200 rpm No. of tracks on one side of platter = 30000 No. of sectors…

Fundamentals of Input and Output Performance

The I/O subsystem is a component of computer system design that uses buses to assist communication between the Central Processing Unit, Computer Memory/Storage, and Input and Output Devices (that is known as peripheral devices). The I/O subsystem includes disc controllers, tape drives, discs, system buses, and other devices. The I/O database application reads and writes drives using the operating system windows I/O.