[理工] [計組] Write Allocate觀念疑問
當使用write through + no write allocate
對某個block write miss時，書上說之後可能直接寫入，所以不用浪費時間寫回cache
我的疑問是，之後要寫同個block時 不就還會一直miss嗎?
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感謝樓上，會想問這個其實是因為看到 103清大12題(c) http://imgur.com/aLarlPv
網路上查到Write Back with No Write Allocate
Subsequent writes to the same block, if the block originally caused a miss,
will generate misses all the way and result in very inefficient execution.
所以只要搭配no write allocate都有此問題囉!?
※ 編輯: TSbank (61.230.151.155), 01/24/2016 22:53:44
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