Consider a system with 3 I/O devices •Printer (priority of 2) •Disk (priority of 4) •Communication line (priority of 5) User program begins at t = 0 and the multiple interrupts occur at following time instances •At t = 10, disk interrupt occurs •At t = 15, printer interrupts occurs •At t = 20 communication interrupt occurs Show the time sequence of multiple interrupts, assuming that service routine for each interrupt takes 10 time units.
Q: 1. Consider two processes, P1 and P2, where p1 = 50, t1 = 25, p2 = 75, and t2 = 30. a. Can these…
A: CPU scheduling refers to the methods in which the task of CPU is performed. There are various types…
Q: In this problem, you will explore processor frequency in the context of the speed of light. Suppose…
A: INTRODUCTION: Calculate the required values:Frequency(f) = 8722.78 MHz = 8.723 * 109HzClock period…
Q: Suppose a byte-addressable memory with 4 frames of size 32 bytes each and a paged virtual memory…
A: I will explain it in details,
Q: The scheduling will work as following: P, P2 P3 P, P, P, P, P, 4 7 10 14 18 22 26 30 Therefore, P,…
A: import java.io.*;import java.util.*; class Process { int id; int executionTime;…
Q: |Consider the current allocation in the memory as shown before additional requests for P1=20k,…
A: Given size of the process requests, P1=20k, P2=35k, P3=10k, P4=30k, P5=10k Next fit says that…
Q: empty page is available or the replaced page is not modified, and 20 percent of the time. What is…
A: In this question, we are asked to find out maximum page fault rate with the given data Given: Time…
Q: Consider a system which employs an interrupt driven I/O for a particular device that transfer data…
A: Introduction Given , a system With interrupt driven I/O Transfer rate = 10 KBps Interrupt…
Q: A computer has four page frames. The time of loading, time of last access, and the Referenced (R)…
A:
Q: Suppose the processing load of a computing system consists of 50% disk activity, 25% CPU activity,…
A: Given data, Percentage of processing load on CPU = 25%Percentage of processing load on Disk =…
Q: Consider a system employing interrupt-driven I/O for a particular device that trans- fers data at an…
A: In this question we have to solve the given parts for the system employing interrupt driven I/O for…
Q: 6. Consider the following set of processes, with the length of the CPU-burst time given Burst Time…
A: Process Burst Time Priority P1 10 3 P2 1 1 P3 2 3 P4 1 4 P5 5 2 A. As the arrival time…
Q: (c) Given the following processes, burst times and process priorities. Priority High Process Number…
A: We need to find the better algorithm out of the given two, for the given scenario.
Q: Consider the following set of processes, with the length of the CPU burst time given in…
A:
Q: 6. Consider a three process system in which processes may request any of 12 drives. Suppose the…
A: In this question, we have 12 drives resource and 3 processes P0, P1 and P2. We have to check either…
Q: You have a byte-addressable virtual memory system with a two-entry TLB, a 2-way set-associative…
A: Finding the physical address: # of frames in main memory = 4 Frame number bits = log24 = 2 bit
Q: 23. Consider a process executing on an operatinng system that uses demand paging The average firtie…
A: The average time for a memory access in the system is = M units Memory page is available in memory,…
Q: 10. Consider the following set of processes, the length of the CPU burst time given in milliseconds:…
A: 10. Consider the following set of processes, the length of the CPU burst time given in milliseconds:…
Q: Solve. 1.Consider a system with 2 level cache. Access times of Level 1, Level 2 cache and main…
A: Note the question is multiple one. We are advised to do only first question. Kindly post other…
Q: Consider the following set of processes, with the length of the CPU burst time, Arrival Time and…
A: Solution: Given set of processes,
Q: Consider a two-tier memory system consisting of cache (SRAM) and main memory (DRAM). The cache…
A: The answer is
Q: Consider the following process arrival, CPU and I/O burst times. Assume that only one I/O device is…
A: Gantt chart CPU: P3 P1 P2 P3 P1 P2 P1 P3 1 4 4 11 11…
Q: Consider the following set of processes, with the length of the CPU burst and I/O burst given in…
A:
Q: You have a byte-addressable virtual memory system with a two-entry TLB, a 2-way set-associative…
A: Given: It is a 2-way set associative cachePage table Process, PSize of the cache block = 8 words…
Q: a) A system implements a paged virtual address space for a process using a one-level page table The…
A: 1. Number of bits required for page table entry =log(number of pages in logical address space) =…
Q: Il- Consider a virtual memory system with the following properties: • 42-bit virtual byte address •…
A:
Q: 3. An external event is sensed using polling with period P. It takes 100 cycles to process the…
A: According to the information given:- We have to follow the instruction in order to determine range…
Q: Consider the following processes with the given CPU and I/0 burst times. Assume that CPU is…
A: Solution First shorter rest time algorithm (SRTF) The precautionary version of the SJF programme is…
Q: onsider a system with 3 I/O devices Printer (priority of 2) Disk (priority of 4) Communication line…
A: Interrupt Interrupt is a signal raised by software or hardware to get immediate attention of…
Q: a) Assume, paging has been used as memory management technique and the page table is stored in…
A: Paging is a memory management technique that allows processes physical memory to be discontinuous…
Q: In this problem, you will explore processor frequency in the context of the speed of light. Suppose…
A: INTRODUCTION: Calculate the required values:Frequency(f) = 8722.78 MHz = 8.723 *…
Q: Consider a system employing interrupt-driven I/O for a particular device that trans- fers data at an…
A: I have mentioned answer in word based image format , please find in below a) :
Q: Consider the following four processes represented as process, Arrival time. Burst time) with the…
A: The Answer is in Below steps
Q: You have a byte-addressable virtual memory system with a two-entry TLB, a 2-way set-associative…
A: There are seven bits of the virtual address and six bits of the physical address. The given virtual…
Q: Consider a two level cache system. For 100 memory references, 20 misses in the first lyel cache and…
A: Introduction : given , 2 level cache system. Total memory reference = 100. 20 miss in level 1. 6…
Q: Given a computer using a byte-addressable virtual memory system with a two-entry TLB, a 2-way set…
A: We have , Page size = 16 Bytes No. of bits required to represent…
Q: Assume a computer has on-chip and off-chip caches, main memory and virtual memory. Assume the…
A: Virtual memory is a popular technique used in the operating systems (OS) of computers. Virtual…
Q: Consider the following set of processes, with the length of the CPU-burst time given in…
A: Given: Consider the following set of processes, with the length of the CPU-burst time given in…
Q: A system implements a paged virtual address space for each process using a one-level page table. The…
A: Page Size = 1024 Bytes = 1KBPhysical Memory = 2MBMaximum Virtual Address Space = 16MB
Q: 11. Suppose the time to service a page fault is on the average 10 milliseconds, while a memory…
A: Introduction
Q: Given separated memory holes of 210KB, 1070KB, 350KB, 1360KB, and 550KB (in order), how would each…
A:
Q: please solution with explain 3- Suppose that three processes in the following table arrived in this…
A: The CPU scheduler of the given process using preemptive SJF
Q: A system implements a paged virtual address space for each process using a one-level page table. The…
A: The maximum number of entries in a page table is computed as follows, Maximum number of entries in a…
Q: Operating System: Consider a demand-paging system with a paging disk. The average disk access time…
A: Operating System: Consider a demand-paging system with a paging disk. The average disk access…
Q: A system implements a paged virtual address space for each process using a one-level page table. The…
A: Note: - As per the guidelines we can only answer a maximum of three subparts. Please resubmit the…
Q: size is 1024 bytes and the maximum physical memory size of the machine is 2 megabytes. Assuming two…
A: 3. Number of bits in virtual address = log(virtual address size) = log(maximum size of process) =…
Q: In paging (given diagram), for CPU request there are two access time one for accessing page table…
A: In paging (given diagram), for CPU request there are two access time one for accessing page table…
Q: Q5) Consider the following set of processes, with length of the CPU-burst time given in…
A: FCFS The simplest scheduling algorithm is first in, first out (FIFO), also known as first come,…
Q: Consider the below interrupts and their priority settings of user and natural interrupt priorities.…
A:
Q: 25. A system implements a paged virtual address space for each process using a one-level page table.…
A: Given Data : Page size = 1024 bytes Physical address space = 2MB Virtual address space = 16MB
Q: Consider the following set of processes, with the length of the CPU burst time given in…
A:
Consider a system with 3 I/O devices
•Printer (priority of 2)
•Disk (priority of 4)
•Communication line (priority of 5)
User
•At t = 10, disk interrupt occurs
•At t = 15, printer interrupts occurs
•At t = 20 communication interrupt occurs
Show the time sequence of multiple interrupts, assuming that service routine for each interrupt takes 10 time units.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images
- If a microprocessor has a cycle time of 0.5 nanoseconds, what’s the processor clock rate? If the fetch cycle is 40% of the processor cycle time, what memory access speed is required to implement load operations with zero wait states and load operations with two wait states?Consider a system which employs an interrupt driven I/O for a particular device that transfer data at an average of 10 KBps on a continuous basis. Assume that interrupt processing takes about 100 µs (i.e. jump to the interrupt service routine (ISR); execute it and return to the main program). The fraction of processor time which is consumed by this I/O device when it is interrupted for every byte will be ?Consider a system with 3 I/O devices Printer (priority of 2) Disk (priority of 4) Communication line (priority of 5) Higher priority is indicated by high numerical value. User program begins at t = 0 and the multiple interrupts occur at following time instances At t = 10, Printer interrupt occurs At t = 15, Communication interrupts occurs At t = 25 Disk interrupt occurs Show the time sequence of multiple interrupts, assuming that service routine for Printer interrupt takes 30 time units, Disk interrupt takes 10 time units, and Communication interrupt takes 5 time units.
- Consider a system employing interrupt-driven I/O for a particular device that trans- fers data at an average of 8 KB/s on a continuous basis. a. Assume that interrupt processing takes about 100 µs (i.e., the time to jump to the interrupt service routine (ISR), execute it, and return to the main program). De- termine what fraction of processor time is consumed by this I/O device if it inter- rupts for every byte. b. Now assume that the device has two 16-byte buffers and interrupts the processor when one of the buffers is full. Naturally, interrupt processing takes longer, be- cause the ISR must transfer 16 bytes. While executing the ISR, the processor takes about 8 us for the transfer of each byte. Determine what fraction of processor time is consumed by this I/O device in this case. c. Now assume that the processor is equipped with a block transfer I/O instruction such as that found on the Z8000. This permits the associated ISR to transfer each byte of a block in only 2 µs. Determine…3. An external event is sensed using polling with period P. It takes 100 cycles to processthe event. Processor frequency is 48 MHz. Before starting a new period, the previouspolling task should have finished. The relative deadline for processing an event is 10μs.(a) Determine the range of feasible polling periods? (b) Suppose now that an unrelated interrupt may occur and the interrupt has higher priority than the code for processing the polling event. Including all overhead, it takes 40 cycles to process the interrupt. The minimum time between two subsequent interrupts is T. Suppose that T is larger than 140 cycles. Determine the range of feasible polling periods.Computer Science Suppose for a processor system it takes 35 cycles to push and pop registers onto the stack and change the PC value to the start of the interrupt service routine (ISR) or return from it. Suppose also that the ISR software takes additional 45 cycles to store the process state before the actual ISR body begins its work, and suppose it takes the same number of cycles to restore the process state when ISR is finished. If the ISR body takes 1000 cycles, what is the percent total overhead every time the ISR is executed? If the processor is running at a 2 GHz clock frequency, how long does it take before the ISR body begins execution in nanoseconds? This is usually called the ISR latency
- Assume that an interrupt mechanism uses the hardware stack to store PC and other registers of the interrupted computations. The interrupt mechanism recognizes 4 interrupt vectors IV [1], IV [2], IV [3], IV [4] initialized by addresses of their corresponding ISRI=1.4. The elements of the hardware stack are a record R, where each field stores a specific CPU register (R.PC is the field, which stores the program counter PC and so on). The Hardware stack is manipulated using the standard stack operation Pop, Push, EmptyStack. a) Explain how the CPU detects an interrupt signal I and what actions should be taken ? b) Write the initial and final sequences of instruction of a given ISR I. (Transparency). c) Write the ISR4 such that whatever number of interrupted computation (in the stack) it gives the control to the first one interrupted.A system implements a paged virtual address space for each process using a one-level page table. The maximum size of virtual address space is 4MB. The page table for the running process includes the following valid entries (the - notation indicates that a virtual page maps to the given page frame, that is, it is located in that frame): Virtual page 2→ page frame 4 Virtual page 4→ page frame 9 Virtual page 1 page frame 2 Virtual page 3-→ page frame 16 Virtual page 0- page frame 1 The page size is 1024 bytes and the maximum physical memory size of the machine is 1MB. a) How many bits are required for each virtual address? type your answer. b) How many bits are required for each physical address? type your answer. c) What is the maximum number of entries in a page table? type your answer. d) What is the number of physical frames? type your answer. e) To which physical address will the virtual address Ox1173 translate? type your answer. f) Which virtual address will translate to physical…A computer employs RAM chips of 512 x 16 and ROM chips of 1024 x 8. The computer system needs 4K bytes of RAM and 2K bytes of ROM along with interface unit of 128 registers each. A memory mapped I/O configuration is used. The two higher order bits are assigned for RAM, ROM and interface as 00, 01 and 10 respectively. •a. Compute total number of decoders are needed for the above system? •b. Design a memory-address map for the above system •C. Show the chip layout for the above design
- Polling for an I/O completion can waste a large number of CPU cycles if the processor iterates a busy-waiting loop many times before the I/O completes. But if the I/O device is ready for service, polling can be much more efficient than is catching and dispatching an interrupt. Describe a hybrid strategy that combines polling, sleeping and interrupts for I/O service. For each of these strategies (pure polling, pure interrupts, hybrid) describe a computing environment in which that strategy is more efficient than is either of the others.Consider the below interrupts and their priority settings of user and natural interrupt priorities. a. Ext_interrupt_1: User Priority = 1, Interrupt Vector = 30; b. Ext_interrupt_2: User Priority = 0, Interrupt Vector = 45; c. Ext_interrupt_3: User Priority = 1, Interrupt Vector = 90; d. Ext_interrupt_4: User Priority = 1, Interrupt Vector = 95; If the above interrupts occur at the same time, which one will be served first? a b.Assume that an interrupt mechanism uses the hardware stack to store PC and other registers of the interrupted computations. The interrupt mechanism recognizes 4 interrupt vectors IV [1], IV [2], IV [3], IV [4] initialized by addresses of their corresponding ISR I =1..4. The elements of the hardware stack are a record R, where each field stores a specific CPU register (R.PC is the field, which stores the program counter PC and so on). The Hardware stack is manipulated using the standard stack operation Pop, Push, EmptyStack.a) Explain how the CPU detects an interrupt signal I and what actions should be taken?b) Write the initial and final sequences of instruction of a given ISR I (Transparency).c) Write the ISR4 such that whatever number of interrupted computation (in the stack) it gives the control to the first one interrupted.