CPU with interrupt-driven I/O is busy servicing a disk request. While the CPU is midway through the disk service routine, another I/O interrupt occurs. Q.) Is it a problem?
Q: The average time necessary for the correct sector of a disk to arrive at the read write head is…
A: The amount of time between information requests and the time it takes the hard drive to move to the…
Q: Which bit in the PTE does the operating system use for approximating LRU replacement? Does a TLB…
A: 1) reference bit
Q: Define logical address and physical address. If a hard disk has an access time of 10 MB per second,…
A: Logical address: It is the address which is generated by CPU while running a program. It is also…
Q: A block is a contiguous sequence of sectors from a single track of one platter. Each request…
A: Introduction: The given statement is about the Disc Block Access. Explanation in the next step.
Q: Does disk caching have any benefits or drawbacks when it comes to writing to a disk?
A: It is the drive's built-in temporary data storage, often known as the "Disk Buffer" or "Cache…
Q: How do the following affect total disk access time? a) Disk latency b) Seek time c) Transfer…
A: The delay of the rotating disk to get the needed disk sector of the read/write head, and is…
Q: The answer to this question depends on your understanding of interrupt requests (IRQs) and whether…
A: Introduction: An Interrupt Request is a signal sent by a hardware device to the central processing…
Q: Disk write caching has which of the following advantages and disadvantages?
A: Introduction: Disk write cache: The procedure for storing files in a temporary storage area can be…
Q: A CPU with interrupt-driven I/O is busy servicing a disk request. While the CPU is midway through…
A: Interrupts: These are considered as signals that some external devices (mainly I/O devices) transfer…
Q: Why rotational latency is usually not considered in disk scheduling
A: The majority of disc scheduling algorithms ignore rotational frequency since the real physical…
Q: What exactly are the different disk-scheduling algorithms?
A: Introduction The question is about What exactly are the different disk-scheduling algorithms and…
Q: A file system with 300 GByte disk uses a file descriptor with 8 direct block addresses, I indirect…
A:
Q: Why rotational latency is not considered in disk scheduling?
A: Given: Why is rotational delay not taken into account in disc scheduling?
Q: There is a little danger while using SSTF disk scheduling.
A: In SSTF disk scheduling (or Shortest Seek Time First), the block which is nearest to the current…
Q: Name four disk-arm scheduling algorithms. Outline the basic algorithm for each
A: Disk preparation: It is performed by operating systems to coordinate the arrival of I O requests…
Q: Which bit in the PTE does the operating system use for approximating LRU replacement? Does a TLB…
A: NOTE: as per rules we are allowed to solve one problem at a time please upload the rest. Which bit…
Q: What are the disadvantages of disk caching.
A: To be determine: What are the disadvantages of disk caching
Q: Answer the following short questions to the point.…
A: Note: Since multiple Question asked solving first three questions. 1) reference bit
Q: the overall speedup of a system that spends 55% of throughput. Express the speed up as a percentage…
A: The above question is solved in step 2 :-
Q: a. How is the logical-to-physical address mapping accomplished in this system? (For the indexed…
A: Let Z be the beginning file address (block number). a. Contiguous. Divide the logical address by 512…
Q: Discuss with suitable illustration how memory mapped files can be used in memory management.
A: memory-mapped files can be used in memory management as explained in the steps below.
Q: Please help me in this question: 17/ To access a particular piece of data, the CPU first sends a…
A: To access a particular piece of data, the CPU first sends a request to its nearest memory, usually…
Q: Defintion of rotational lag and disk bandwidth is necessary.
A: The extra time spent waiting for the disc to spin the requested sector to the disc head is known as…
Q: The average time necessary for the correct sector of a disk to arrive at the read write head A…
A: The correct answer for the above question is:-
Q: The UNIX I-node contains 8-direct disk block addresses, a single indirect and a double indirect…
A: The Answer is
Q: On a system using a disk cache, the mean access time is dependent on the mean cache access time, the…
A: Introduction :Given, Cache memory,cache access time = 1 ms disk access time = 100 ms hit rate = 25…
Q: It is tried that concurrent parts of a file will be stored on subsequent devices in sequence. Is…
A: Start: Magnetic discs are quite important. An operating system's file system guarantees that each…
Q: I'm wondering what sort of file access pattern would be the most appropriate for chained file…
A: Introduction: A file access definition can limit access to data in specified tables and columns and…
Q: A CPU with interrupt-driven 1/O is busy servicing a disk request. While the CPU is midway through…
A: Part(a) Many CPUs have the ability to assign interrupt priority levels, therefore it depends. As a…
Q: In Disk management practical, we have observed that if we are creating a partition of 10 GB but in…
A: You can only use 9.96 GB when you created a partition of 10GB.
Q: (A Task): To access data in a hard disk, it requires time to move the head to the desired track…
A: Here, I have to provide a solution to the above question.
Q: Each inode in a file system has 5 direct pointers to disk blocks, 3 single-indirect pointers to disk…
A: Given:
Q: The disk controller can be told to replace each bad sector logically with one of the spare sectors…
A: Given: The disk controller can be told to replace each bad sector logically with one of the spare…
Q: technique of assigning a memory address to each I/O device in the computer system is called:…
A: Here have to determine about assigning a memory address to each I/O device in the computer system is…
Q: A CPU with interrupt-driven I/O is busy servicing a disk request. While the CPU is midway through…
A: CPU with interrupt driven I/O Interrupt driven I/O is used for controlling input/output activity.…
Q: When a disk stack is serviced by a comb-like access mechanism, there is one read/write head for each…
A: A surface test tool does exactly what it says: it scans the hard disc surface, checks for damaged…
Q: what is caching disk writes
A: Disk write caching is a feature that improves the performance of the machine by collecting written…
Q: Answer the following short questions to the point.…
A: (1) Page Table Entries: The page table has page table entries where a frame number and optional…
Q: A post calculation strategy for a factory indicates a disk with 200 blocks. Assuming, that the file…
A: There are mainly three file allocation methods are present, that are: Contiguous allocation Linked…
Q: Is there a reason why disk scheduling doesn't take into account rotational latency
A: Rotational latency is the time required by read/write head to move from one sector to other.
Q: Maximum partitioning that can be created on a computer basic disk is
A: Partition divides one complete disk into segments .
Q: A file system with 300 GByte uses a file descriptor with 8 direct block address. 1 indirect block…
A: Question. A file system with 300 GByte uses a file descriptor with 8 direct block address. 1…
Q: question(6).Consider a disk pack with 32 surfaces, 64 tracks and 512 sectors per pack. 256 bytes of…
A: Introduction :
CPU with interrupt-driven I/O is busy servicing a disk request. While the CPU is midway through the disk service routine, another I/O interrupt occurs. Q.) Is it a problem?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- A CPU with interrupt-driven I/O is busy servicing a disk request. While the CPU is midway through the disk-service routine, another I/O interrupt occurs.Q.) what can be done about it?A CPU with interrupt-driven I/O is busy servicing a disk request. While the CPU is midway through the disk-service routine, another I/O interrupt occurs.Q.) What happens next?Please let me know if these are true or false! In multiprocessors with a shared physical main memory, an access to a word of main memory always takes about the same amount of time no matter which word is being accessed and by which processor: T/F? When reading data from a magnetic disk, the rotational latency increases linearly with the size of the request: T/F? SSD is faster to access than magnetic disk, but slower than DRAM main memory: T/F? The primary purpose of RAID is for data backups: T/F? Typically, data parallelism offers greater opportunities for achieving highly-parallel execution than does functional parallelism: T/F? In MIPS systems, one way to implement locks is with the MIPS test-and-set machine language instruction: T/F?
- I/O interface: (a) Consider the following I/O scenarios on a single-user PC: i. A mouse used with a graphical user interface ii. A disk drive containing user files iii. A graphics card with direct memory bus connection, accessible via memory-mapped I/O For each of these I/O scenarios, would you use polled I/O or interrupt-driven I/O? Would you design the operating system to use buffering, spooling, caching, or a combination? (b) The operating system normally performs resource accounting in order to determine, for instance, the amount of CPU time that a process has already consumed for scheduling purposes. Discuss why interrupts and execution in kernel mode could complicate this process. (Question: Operating System)The control signal Ep or iEnableoutput allows the program counter to decrement its value. True False The control signal Ep or iEnableoutput sends the content of the program counter to the W bus. True False A tri-state buffer is needed for all data going to the W bus. True False In using 'assign' statement in Verilog, the left hand side must always be a register. True False In declaring a register in Verilog, the following format must be followed: reg [LSB:MSB] identifier; True FalseAnswer the following short questions to the point. Which bit in the PTE does the operating system use for approximating LRU replacement? Does a TLB miss always/sometimes/never result in a paging from disk? What are the two components of a virtual address used in segmented virtual memory? In what Nachos file was StartProcess implemented?
- In a main memory-disk virtual storage system, the page size is 1KByte and the FIFO algorithm is used for page replacements. A given program has been allocated three page frames in the main memory and it makes the following 16 memory references when it starts executing (the addresses are given in decimal):500, 2000, 2500, 800, 4000, 1000, 5500, 1500, 2800, 400, 5000, 700, 2100, 3500, 900, 2400 Fill in the contents of the three page frames after each memory reference in a table and calculate the hit ratio. Hint: denote by 'a' the page consisting of locations 0 through 1023 in memory. Similarly, b: 1024-2047, c: 2048-3071, d: 3072-4095, e: 4096-5119 and f: 5120-6143. Round to three decimal places.Select the WRONG statement relating to the properties of DRAM memories. (Select the WRONG statement; the statements not selected should be true) The bit line is kept at a voltage between high voltage and ground, during a WRITE operation. A DRAM row-read takes a long time, but once a row is read into a buffer, multiple back-to- back reads to the same row are much faster. Unlike SRAM reads, DRAM reads are "destructive". Memory locations not accessed for some time need to be refreshed periodically.To what extent does disk write caching benefit from the following?
- Answer the following short questions to the point. Which bit in the PTE does the operating system use for approximating LRU replacement? Does a TLB miss always/sometimes/never result in a paging from disk? What are the two components of a virtual address used in segmented virtual memory? In what Nachos file was StartProcess implemented? What kind of pages in a process’ virtual address space are usually protected as “Read Only”? Is it possible to implement a file system inside of a file stored in another file system?3. Polling Consider a system that uses polling to control to its 4 disk drives. Assume that a poll takes 100 nanoseconds to accomplish and that the requirement is that CPU reacts within 10 microseconds of the disk being ready. What percentage of the CPU is required to manage the disk drives?Interrupt latency and context switch time: what's the difference?