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"In-order" processors only issue instructions in order. Completion is out-of-order even on most processors that are called "in-order". "in-order" just means: if the processor needs to stall the issuing of the next instruction because of a RAW, WAW, or WAR dependence, it can't issue any other instruction during the stall. In ...


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If I remember correctly, this is the formula: Hit time + (miss rate for cache 1 * (1 - miss rate for cache 2) * miss penalty for cache 1) + (miss rate for cache 1 * miss rate for cache 2 * miss penalty for cache 2) Essentially, we just split the case that cache 1 missed into the two cases: cache 2 hit, cache 2 missed. I believe that if you understand this, ...


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