in working memory, there are method stack frames and registers. Pc, is understandable, but why should some referenced main memory variables be copied to working memory? I don"t think it"s necessary at all, which leads to cache consistency problems. Or is there a big price to pay for reading and writing main memory that I don"t know? (isn"t the working memory and the main village all in the physical memory? the access speed is not much different in theory, is it because of the price of lock? Or the competition for the bus? )
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