CPU缓存结构详解：L1、L2、L3缓存的作用与原理

CPU\u7684\u7f13\u5b58\u7ed3\u6784\u662f\u7531\u591a\u7ea7\u7f13\u5b58\u7ec4\u6210\u7684\u3002\u5e38\u89c1\u5305\u62ecL1\u7f13\u5b58\u3001L2\u7f13\u5b58\u548cL3\u7f13\u5b58\u3002\n\nL1\u7f13\u5b58\u662f\u6700\u8fd1\u76f8\u51c6\u5904\u7406\u6838\u5fc3\u7684\u7f13\u5b58\uff0c\u5206\u4e3a\u6307\u4ee4\u7f13\u5b58\uff08L1i\u7f13\u5b58\uff09\u548c\u6570\u636e\u7f13\u5b58\uff08L1d\u7f13\u5b58\uff09\u3002L1i\u7f13\u5b58\u7528\u4e8e\u5b58\u50a8\u6307\u4ee4\uff0c\u63d0\u4f9b\u5feb\u901f\u7684\u6307\u4ee4\u8bbf\u95ee\u80fd\u529b\uff1bL1d\u7f13\u5b58\u7528\u4e8e\u5b58\u50a8\u6570\u636e\uff0c\u63d0\u4f9b\u5feb\u901f\u7684\u6570\u636e\u8bfb\u5199\u80fd\u529b\u3002L1\u7f13\u5b58\u5e38\u5e38\u4f4d\u4e8e\u76f8\u51c6\u5904\u7406\u6838\u5fc3\u5185\u90e8\uff0c\u5bb9\u91cf\u8f83\u5c0f\u4f46\u901f\u5ea6\u975e\u5e38\u5feb\u901f\u3002\n\nL2\u7f13\u5b58\u4f4d\u4e8eL1\u7f13\u5b58\u548c\u4e3b\u5185\u5b58\u4e4b\u95f4\uff0c\u5e38\u5e38\u4f4d\u4e8e\u76f8\u51c6\u5904\u7406\u6838\u5fc3\u5916\u90e8\uff0c\u5bb9\u91cf\u6bd4L1\u7f13\u5b58\u5927\u4f46\u901f\u5ea6\u76f8\u5bf9\u8f83\u6162\u3002L2\u7f13\u5b58\u53ef\u4ee5\u88ab\u591a\u4e2a\u76f8\u51c6\u5904\u7406\u6838\u5fc3\u5171\u4eab\uff0c\u7528\u4e8e\u63d0\u9ad8\u76f8\u51c6\u5904\u7406\u6838\u5fc3\u4e4b\u95f4\u7684\u6570\u636e\u5171\u4eab\u6548\u7387\u3002\n\nL3\u7f13\u5b58\u662f\u4e00\u79cd\u66f4\u5927\u5bb9\u91cf\u3001\u76f8\u5bf9\u8f83\u6162\u7684\u7f13\u5b58\uff0c\u5e38\u5e38\u4f4d\u4e8e\u591a\u4e2a\u76f8\u51c6\u5904\u7406\u6838\u5fc3\u4e4b\u95f4\u6216\u4e0e\u4e3b\u5185\u5b58\u4e4b\u95f4\u3002L3\u7f13\u5b58\u53ef\u4ee5\u88ab\u591a\u4e2a\u76f8\u51c6\u5904\u7406\u5171\u4eab\uff0c\u7528\u4e8e\u63d0\u9ad8\u591a\u4e2a\u76f8\u51c6\u5904\u7406\u6838\u5fc3\u4e4b\u95f4\u7684\u6570\u636e\u5171\u4eab\u6548\u7387\u3002\n\n\u8fd9\u4e9b\u7f13\u5b58\u5c42\u7ea7\u7684\u8bbe\u8ba1\u662f\u4e3a\u4e86\u5c11\u91cf\u51cf\u5c11CPU\u5bf9\u4e3b\u5185\u5b58\u7684\u8bbf\u95ee\u6b21\u6570\uff0c\u4ee5\u63d0\u9ad8\u6570\u636e\u8bbf\u95ee\u901f\u5ea6\u3002\u7531\u4e8e\u7f13\u5b58\u7684\u901f\u5ea6\u8fdc\u9ad8\u4e8e\u4e3b\u5185\u5b58\uff0c\u7f13\u5b58\u80fd\u529b\u5feb\u901fCPU\u5bf9\u6570\u636e\u7684\u8bfb\u53d6\u548c\u5199\u5165\u64cd\u4f5c\uff0c\u63d0\u9ad8\u6574\u4f53\u7684\u6027\u80fd\u3002