Write through mechanism doubt

vamp_vaibhav asked Dec 15, 2017

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Anjan asked Nov 26, 2017

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Doubt on Write through
Consider the following specifications: Hit ratio for read = 0.8, Hit ratio for write = 0.9 Block size =2 words, cache of 10 ns is 10 times faster than main memory On any miss entire block is moved from main memory to cache memory 20% references are for write operations What is avg access time with write through using 1) Write allocate 2) No write allocate

Consider the following specifications:Hit ratio for read = 0.8,Hit ratio for write = 0.9Block size =2 words,cache of 10 ns is 10 times faster than main memory On any miss...

Anjan

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Anjan asked Nov 26, 2017

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sushmita asked Dec 12, 2018

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https://gateoverflow.in/14480/formula-write-back-write-through-access-time-parallel-serial
In this question can someone plz explain to me the write back part? Why are we taking write back time only for cache misses? Why not for hits? How to know when a block is going to be replaced and when to consider write back time.

In this question can someone plz explain to me the write back part? Why are we taking write back time only for cache misses? Why not for hits? How to know when a block i...

sushmita

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sushmita asked Dec 12, 2018

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Ajit J asked Dec 10, 2018

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Stallings (write through)
Consider a cache with a line size of 32 bytes and a main memory that requires 30 ns to transfer a 4-byte word. For any line that is written at least once before being swapped out of the cache, what is the average number of times that the line must be written before being swapped out for a write-back cache to be more efficient that a write-through cache?

Consider a cache with a line size of 32 bytes and a main memory that requires 30 ns to transfer a 4-byte word. For any line that is written at least once before being swa...

Ajit J

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Ajit J asked Dec 10, 2018

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Balaji Jegan asked Aug 25, 2018

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WRITE THROUGH
Consider a 2 level memory hierarchy. L1 (cache) has an accessing time of 15 ns and main memory has an accessing time of 20 ns. Writing or updating contents into their memory takes 30 ns for L1 and 25ns for main memory respectively. Assume L1 gives ... access is ______. The average READING time for system (in ns) if it uses WRITE-THROUGH technique for simultaneous access is ______.

Consider a 2 level memory hierarchy. L1 (cache) has an accessing time of 15 ns and main memory has an accessing time of 20 ns. Writing or updating contents into their mem...

Balaji Jegan

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Balaji Jegan asked Aug 25, 2018

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Write through mechanism doubt

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