1 votes 1 votes Suppose the time taken to write in cache is tc and time to write in main memory is tm. If write back policy is used, only the main memory is written and time taken is tm. But if write through is used, are the main memory and cache updated simultaneously (time taken would be tm) or serially (time taken would be tc + tm)? CO and Architecture co-and-architecture effective-memory-access cache-memory + – Sumaiya23 asked Jan 18, 2018 Sumaiya23 703 views answer comment Share Follow See 1 comment See all 1 1 comment reply Sahin commented Sep 29, 2019 reply Follow Share Main memory and cache updated simultaneously 0 votes 0 votes Please log in or register to add a comment.
0 votes 0 votes In write-through updation, both the main memory and the cache happen simultaneously. Because of that, we take the maximum of these two. Whichever is greater; We'll consider that. yadavg123 answered Dec 19, 2019 yadavg123 comment Share Follow See all 0 reply Please log in or register to add a comment.