原文如下： The abundance of transistors is leading to a problem: what to do with all of them? We saw one approach above: superscalar architectures, with multiple func- tional units. But as the number of transistors increases, even more is possible. One obvious thing to do is put bigger caches on the CPU chip. That is definitely hap- pening, but eventually the point of diminishing returns will be reached.
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billlee Feb 18, 2017  1
晶体管数量的激增带来了一个问题：如何使用这些晶体管？上文提到了一种方案：包含了多个执行模块的 superscaler 架构。实际上，增加的晶体管还可以用来实现更多的特性。比较显而易见的是，可以在 CPU 芯片上放置更大的缓存。毫无疑问，大家已经在这样做了。但是最终，增加缓存的边际收益会递减。
这真是讲操作系统的书？不是讲计算机结构的？ |
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billlee Feb 18, 2017
就是缓存增大到一定程度后，再增加缓存带来的性能提升就非常小了
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