In a Virtual Address translation to Physical Address, the one main reason we use the Write Back scheme instead of Write Through in our caches is because: O Disk memory access time takes millions of cycles compared to a few cycles at cache level O The Write Through strategy needs buffers for speedup which makes it incompatible with a Virtual Memory Address translation O Write Through is very costly to implement compared to write back O The replacement of a translation in the TLB (in the event of a Page Fault) is incompatible with the Write Through strategy,

In a Virtual Address translation to Physical Address, the one main reason we use the Write Back scheme instead of Write Through in our caches is because: O Disk memory access time takes millions of cycles compared to a few cycles at cache level O The Write Through strategy needs buffers for speedup which makes it incompatible with a Virtual Memory Address translation O Write Through is very costly to implement compared to write back O The replacement of a translation in the TLB (in the event of a Page Fault) is incompatible with the Write Through strategy,

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

See similar textbooks

Similar questions

Table below shows the access time and accessed counter for each of the block inside a disk cache. Block Last Access Time Counter A 7/12/2021, 17:05:23 10 7/12/2021, 14:12:63 23 C 7/12/2021, 10:12:63 15 D 7/12/2021, 18:12:63 11 E 7/12/2021, 1:12:63 21 (a) Explain about Least Frequently Used (LFU) policy and state which block will be replaced if it is based on LFU. (b) Explain about Least Recently Used (LRU) policy and state which block will be replaced if it is based on LRU.
So, what should happen when a processor sends a request that fails to be fulfilled in the cache while a block is being sent back to main memory from the write buffer, exactly?
Whaqt are Issues with Writes in respect with cache memory ?
The write buffer will return a block to main memory while the CPU submits a cache-unmet request. What may happen next?
When a block is being sent back to main memory from the write buffer, what should happen if the processor sends a cache-unfulfilled request?
The principal advantage is a savings in physical memory space. This occurs for two reasons: (1) a user page table can be paged in to memory only when it is needed. (2) The operating system can allocate user page tables dynamically, creating one only when the process is created. Of course, there is a disadvantage: address translation requires extra work.
By sending a block from the write buffer to main memory, the processor initiates a cache request that is not completed. Next, do this.
Computer science question
7. Show the final data and tags of the direct-mapped cache shown below for the given memory contents and data access sequence. As shown, you have 8-bit addresses and 4 bytes of data in each block. You can assume write-through and write-allocate write strategies on write hits and misses respectively. Data Access Sequence Address Data 00 01 11 00 00 10 10 00 00 10 01 00 00 01 00 00 00 11 01 00 00 10 10 00 00 01 11 00 00 10 01 00 00 10 00 00 00 10 10 00 Op. lw lw SW lw SW lw lw SW lw lw hits = misses = 32 642 124 I 00 01 10 11 Direct-Mapped Cache V Tag Data hit rate = miss rate = Memory Address 00 00 10 00 00 00 11 00 00 01 00 00 00 01 01 00 00 01 10 00 00 01 11 00 00 10 00 00 00 10 01 00 00 10 10 00 00 10 11 00 00 11 00 00 00 11 01 00 Data 435 9 47 13 7586 86 43 48 673 4 972 1003
When a block is being returned to main memory from the write buffer, what should happen if a processor makes a cache-unfulfilled request?