{"id":101389,"date":"2026-09-06T18:49:21","date_gmt":"2026-09-06T10:49:21","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/101389.html"},"modified":"2026-09-06T18:49:21","modified_gmt":"2026-09-06T10:49:21","slug":"relinux-%e7%b3%bb%e7%bb%9f%e7%af%87%ef%bc%88%e5%8d%81%e4%ba%94%ef%bc%89%ef%bc%9a%e8%bf%9b%e7%a8%8b%e7%af%87%ef%bc%88%e5%9b%9b%ef%bc%89%ef%bc%9a%e8%bf%9b%e7%a8%8b%e5%88%87%e6%8d%a2%e6%b7%b1%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/101389.html","title":{"rendered":"Re:Linux \u7cfb\u7edf\u7bc7\uff08\u5341\u4e94\uff09\uff1a\u8fdb\u7a0b\u7bc7\uff08\u56db\uff09\uff1a\u8fdb\u7a0b\u5207\u6362\u6df1\u5ea6\u89e3\u6790 \u2014\u2014 CPU \u5bc4\u5b58\u5668\u3001\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u4e0e\u5207\u6362\u5168\u6d41\u7a0b\u4e07\u5b57\u8be6\u89e3"},"content":{"rendered":"

\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n

\u89c2\u4f17\u8001\u7237\u4eec\u5927\u5bb6\u597d \u8fd9\u91cc\u662f\u90aa\u4feeKING\u7684\u72ec\u5bb6\u9891\u9053<\/b> <\/p>\n

\u672c\u6587\u5c5e\u4e8e\u7cfb\u5217Linux\u7cfb\u7edf\u7bc7 \u2014\u2014\u64cd\u4f5c\u6307\u4ee4<\/b> <\/p>\n

\u4e00\u8d77\u5b66Linux\u7684\u5c0f\u4f19\u4f34\u53ef\u8ba2\u9605\u4e13\u680f： Linux\u7cfb\u7edf\u7bc7 <\/b>
\n > \u4e0a\u4e00\u7bc7\u6211\u4eec\u8bb2\u5b8c\u4e86\u50f5\u5c38\u4e0e\u5b64\u513f\u8fdb\u7a0b，\u628a\u8fdb\u7a0b\u4ece\u521b\u5efa\u5230\u9000\u51fa\u7684\u751f\u547d\u5468\u671f\u8865\u5168\u4e86\u3002\u5f88\u591a\u4eba\u90fd\u77e5\u9053 Linux \u662f\u591a\u4efb\u52a1\u7cfb\u7edf，\u201c\u540c\u65f6\u201d \u8dd1\u51e0\u767e\u4e2a\u8fdb\u7a0b，\u4f46\u5f88\u5c11\u6709\u4eba\u60f3\u900f\u4e00\u4ef6\u4e8b： > > > CPU \u5c31\u90a3\u4e48\u51e0\u4e2a\u6838\u5fc3，\u4e00\u4e2a\u8fdb\u7a0b\u8dd1\u7740\u8dd1\u7740\u88ab\u5207\u8d70，\u8fc7\u4f1a\u513f\u53c8\u5207\u56de\u6765，\u4e3a\u4ec0\u4e48\u80fd\u7cbe\u51c6\u4ece\u4e0a\u6b21\u505c\u4e0b\u7684\u5730\u65b9\u7ee7\u7eed\u6267\u884c？\u4e2d\u95f4\u7684\u4e34\u65f6\u6570\u636e\u3001\u8fd0\u7b97\u7ed3\u679c\u4e0d\u4f1a\u4e22\u5417？ > > > \u7b54\u6848\u5c31\u662f**\u8fdb\u7a0b\u4e0a\u4e0b\u6587**\u3002\u672c\u7bc7\u6211\u4eec\u4ece CPU \u5bc4\u5b58\u5668\u8bb2\u8d77，\u4e00\u6b65\u6b65\u62c6\u89e3\u4e0a\u4e0b\u6587\u7684\u7ec4\u6210\u3001\u5207\u6362\u7684\u5b8c\u6574\u6d41\u7a0b\u3001\u786c\u4ef6\u4e0e\u8f6f\u4ef6\u7684\u914d\u5408，\u5f7b\u5e95\u641e\u61c2\u591a\u4efb\u52a1\u5207\u6362\u7684\u5e95\u5c42\u539f\u7406\u3002 <\/p>\n

\n

\u4e00\u3001\u6b7b\u5faa\u73af\u8fdb\u7a0b\u5982\u4f55\u8fd0\u884c？\u6df1\u5165\u7406\u89e3\u65f6\u95f4\u7247<\/h3>\n

1.1 \u73b0\u4ee3\u64cd\u4f5c\u7cfb\u7edf\u7684\u516c\u5e73\u8c03\u5ea6<\/h4>\n

\u5355\u6838 CPU \u540c\u4e00\u65f6\u523b\u53ea\u80fd\u6267\u884c\u4e00\u4e2a\u8fdb\u7a0b，\u4f46\u6211\u4eec\u611f\u89c9\u6d4f\u89c8\u5668\u3001\u7f16\u8f91\u5668\u3001\u7ec8\u7aef\u80fd \u201c\u540c\u65f6\u201d \u8fd0\u884c，\u9760\u7684\u5c31\u662f\u65f6\u95f4\u7247\u8f6e\u8f6c\u3002 \u64cd\u4f5c\u7cfb\u7edf\u628a CPU \u65f6\u95f4\u5207\u6210\u5f88\u5c0f\u7684\u65f6\u95f4\u7247（\u6bd4\u5982\u51e0\u6beb\u79d2），\u6bcf\u4e2a\u8fdb\u7a0b\u8dd1\u4e00\u4e2a\u65f6\u95f4\u7247，\u65f6\u95f4\u5230\u4e86\u5c31\u5f3a\u5236\u5207\u8d70，\u6362\u4e0b\u4e00\u4e2a\u8fdb\u7a0b\u3002 \u56e0\u4e3a\u5207\u6362\u901f\u5ea6\u6781\u5feb，\u4eba\u773c\u611f\u77e5\u4e0d\u5230，\u5b8f\u89c2\u4e0a\u5c31\u50cf\u6240\u6709\u8fdb\u7a0b\u5728\u540c\u65f6\u8fd0\u884c\u3002<\/p>\n

1.2 \u559d\u5496\u5561\u7684\u7c7b\u6bd4<\/h4>\n

\u4f60\u65e9\u4e0a\u540c\u65f6\u505a\u4e09\u4ef6\u4e8b：\u5199\u4ee3\u7801\u3001\u6ce1\u5496\u5561\u3001\u56de\u6d88\u606f\u3002<\/p>\n

    \n
  • \u5199\u4ee3\u7801\u5199 30 \u79d2，\u505c\u624b<\/li>\n
  • \u53bb\u6405\u4e24\u4e0b\u5496\u5561，\u505c\u624b<\/li>\n
  • \u56de\u4e00\u6761\u6d88\u606f，\u505c\u624b<\/li>\n
  • \u56de\u6765\u63a5\u7740\u5199\u4ee3\u7801<\/li>\n<\/ul>\n

    \u6bcf\u4ef6\u4e8b\u90fd\u4e0d\u662f\u4e00\u53e3\u6c14\u505a\u5b8c\u7684，\u800c\u662f\u788e\u7247\u5316\u4ea4\u66ff\u6267\u884c\u3002\u56e0\u4e3a\u5207\u6362\u5f88\u5feb，\u4f60\u611f\u89c9\u4e09\u4ef6\u4e8b\u90fd\u5728\u63a8\u8fdb\u3002 \u8fdb\u7a0b\u8c03\u5ea6\u5c31\u662f\u540c\u6837\u7684\u903b\u8f91：CPU \u5728\u51e0\u5341\u4e2a\u8fdb\u7a0b\u95f4\u5feb\u901f\u5207\u6362，\u6bcf\u4e2a\u8fdb\u7a0b\u8dd1\u4e00\u5c0f\u6bb5，\u5b8f\u89c2\u5e76\u884c，\u5fae\u89c2\u4e32\u884c\u3002<\/p>\n

    1.3 \u65f6\u95f4\u7247\u8f6e\u8f6c\u673a\u5236\u7684\u597d\u5904<\/h4>\n
  • \u516c\u5e73：\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u80fd\u5206\u5230 CPU \u65f6\u95f4，\u4e0d\u4f1a\u4e00\u4e2a\u8fdb\u7a0b\u5361\u6b7b\u9738\u5360 CPU，\u5176\u4ed6\u8fdb\u7a0b\u997f\u6b7b<\/li>\n
  • \u54cd\u5e94\u5feb：\u4ea4\u4e92\u8fdb\u7a0b（\u6bd4\u5982\u70b9\u51fb\u9f20\u6807）\u4e0d\u7528\u7b49\u524d\u9762\u5927\u8fdb\u7a0b\u8dd1\u5b8c，\u5f88\u5feb\u5c31\u80fd\u8f6e\u5230<\/li>\n
  • \u541e\u5410\u9ad8：CPU \u5c3d\u91cf\u4e0d\u95f2\u7740，\u6574\u4f53\u6548\u7387\u9ad8<\/li>\n

    💡 \u65f6\u95f4\u7247\u4e0d\u662f\u8d8a\u5c0f\u8d8a\u597d \u5207\u6362\u662f\u6709\u5f00\u9500\u7684\u3002\u65f6\u95f4\u7247\u592a\u5c0f，\u5207\u6362\u592a\u9891\u7e41，\u5927\u90e8\u5206\u65f6\u95f4\u90fd\u82b1\u5728\u5207\u6362\u4e0a，\u771f\u6b63\u5e72\u6d3b\u7684\u65f6\u95f4\u5c11，\u6574\u4f53\u6548\u7387\u53cd\u800c\u4f4e\u3002 \u65f6\u95f4\u7247\u592a\u5927，\u5927\u8fdb\u7a0b\u5360 CPU \u592a\u4e45，\u4ea4\u4e92\u54cd\u5e94\u6162\u3002Linux \u684c\u9762\u7248\u9ed8\u8ba4\u65f6\u95f4\u7247\u4e00\u822c\u662f\u51e0\u6beb\u79d2\u5230\u51e0\u5341\u6beb\u79d2，\u662f\u54cd\u5e94\u548c\u541e\u5410\u7684\u5e73\u8861\u3002<\/p>\n

    \n

    \u4e8c\u3001CPU \u5bc4\u5b58\u5668\u4e0e\u4e34\u65f6\u6570\u636e<\/h3>\n

    2.1 \u5bc4\u5b58\u5668\u7684\u8bde\u751f\u80cc\u666f\u4e0e\u6838\u5fc3\u4f5c\u7528<\/h4>\n

    CPU \u662f\u8fd0\u7b97\u5668，\u4f46\u8fd0\u7b97\u4e0d\u80fd\u6ca1\u6709\u5730\u65b9\u653e\u4e2d\u95f4\u7ed3\u679c\u3002 \u5185\u5b58\u592a\u6162\u4e86，CPU \u8fd0\u7b97\u901f\u5ea6\u662f\u5185\u5b58\u7684\u4e0a\u767e\u500d，\u5982\u679c\u6bcf\u6b21\u53d6\u6570\u5b58\u6570\u90fd\u8dd1\u5185\u5b58，CPU \u5927\u90e8\u5206\u65f6\u95f4\u90fd\u5728\u7b49，\u6027\u80fd\u6d6a\u8d39\u4e25\u91cd\u3002<\/p>\n

    \u4e8e\u662f CPU \u5185\u90e8\u96c6\u6210\u4e86\u5bc4\u5b58\u5668：<\/p>\n

      \n
    • \u5bb9\u91cf\u6781\u5c0f，\u901f\u5ea6\u6781\u5feb，\u548c CPU \u540c\u901f<\/li>\n
    • \u7528\u6765\u5b58\u653e\u5f53\u524d\u6b63\u5728\u8fd0\u7b97\u7684\u4e34\u65f6\u6570\u636e\u3001\u6307\u4ee4\u5730\u5740\u3001\u6808\u6307\u9488\u7b49<\/li>\n
    • \u7a0b\u5e8f\u8fd0\u884c\u65f6，\u5f53\u524d\u7528\u5230\u7684\u53d8\u91cf\u3001\u4e2d\u95f4\u7ed3\u679c\u3001\u4e0b\u4e00\u6b65\u6267\u884c\u54ea\u6761\u6307\u4ee4，\u90fd\u5b58\u5728\u5bc4\u5b58\u5668\u91cc<\/li>\n<\/ul>\n

      2.2 \u5e38\u89c1\u7684\u6838\u5fc3\u5bc4\u5b58\u5668\u5206\u7c7b<\/h4>\n

      \u4ee5 x86 \u67b6\u6784\u4e3a\u4f8b，\u6838\u5fc3\u5bc4\u5b58\u5668\u5206\u51e0\u7c7b：<\/p>\n

      \u8868\u683c<\/p>\n\n\u5bc4\u5b58\u5668\u7c7b\u578b\u4ee3\u8868\u4f5c\u7528<\/tr>\n\n\n\n\n\n
      \u7a0b\u5e8f\u8ba1\u6570\u5668<\/td>\nPC \/ EIP<\/td>\n\u5b58\u653e\u4e0b\u4e00\u6761\u8981\u6267\u884c\u7684\u6307\u4ee4\u7684\u5185\u5b58\u5730\u5740\u3002CPU \u7167\u7740\u5b83\u53d6\u6307\u4ee4\u6267\u884c，\u662f\u7a0b\u5e8f\u7684 \u201c\u5bfc\u822a\u6307\u9488\u201d<\/td>\n<\/tr>\n
      \u6808\u6307\u9488\u5bc4\u5b58\u5668<\/td>\nSP \/ ESP<\/td>\n\u6307\u5411\u5f53\u524d\u8fdb\u7a0b\u7684\u5185\u6838\u6808 \/ \u7528\u6237\u6808\u6808\u9876\u3002\u51fd\u6570\u8c03\u7528\u3001\u5c40\u90e8\u53d8\u91cf\u3001\u8fd4\u56de\u5730\u5740\u90fd\u9760\u6808\u6307\u9488\u5b9a\u4f4d<\/td>\n<\/tr>\n
      \u901a\u7528\u5bc4\u5b58\u5668<\/td>\neax\/ebx\/ecx\/edx \u7b49<\/td>\n\u5b58\u653e\u8fd0\u7b97\u7684\u4e2d\u95f4\u503c\u3001\u53c2\u6570\u3001\u8fd4\u56de\u503c\u3002\u52a0\u51cf\u4e58\u9664\u3001\u903b\u8f91\u8fd0\u7b97\u90fd\u7528\u5b83\u4eec<\/td>\n<\/tr>\n
      \u72b6\u6001\u5bc4\u5b58\u5668<\/td>\nEFLAGS<\/td>\n\u5b58\u653e\u8fd0\u7b97\u6807\u5fd7\u4f4d（\u8fdb\u4f4d\u3001\u96f6\u3001\u7b26\u53f7\u7b49）\u3001\u4e2d\u65ad\u5f00\u5173\u7b49\u72b6\u6001<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      2.3 \u6838\u5fc3\u7ed3\u8bba：\u533a\u5206 \u201c\u7a7a\u95f4\u201d \u4e0e \u201c\u5185\u5bb9\u201d<\/h4>\n

      \u8fd9\u662f\u7406\u89e3\u4e0a\u4e0b\u6587\u5207\u6362\u6700\u5173\u952e\u7684\u4e00\u70b9：<\/p>\n

        \n
      • \u5bc4\u5b58\u5668\u662f \u201c\u76d2\u5b50 \/ \u7a7a\u95f4\u201d：CPU \u91cc\u5c31\u8fd9\u4e48\u51e0\u5341\u4e2a\u5bc4\u5b58\u5668，\u786c\u4ef6\u4e0a\u662f\u56fa\u5b9a\u7684，\u6240\u6709\u8fdb\u7a0b\u5171\u7528\u8fd9\u4e00\u5957\u5bc4\u5b58\u5668<\/li>\n
      • \u5bc4\u5b58\u5668\u91cc\u7684\u6570\u636e\u662f \u201c\u5185\u5bb9\u201d：\u6bcf\u4e2a\u8fdb\u7a0b\u8fd0\u884c\u65f6，\u5f80\u5bc4\u5b58\u5668\u91cc\u653e\u81ea\u5df1\u7684\u6570\u636e<\/li>\n<\/ul>\n

        \u76d2\u5b50\u53ea\u6709\u4e00\u5957，\u4f46\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u81ea\u5df1\u7684 \u201c\u884c\u674e\u201d\u3002\u5207\u6362\u8fdb\u7a0b\u7684\u65f6\u5019，\u4e0d\u80fd\u628a\u4e0a\u4e00\u4e2a\u8fdb\u7a0b\u7684\u6570\u636e\u76f4\u63a5\u6254\u4e86，\u5f97\u5148\u5b58\u8d77\u6765，\u518d\u653e\u4e0b\u4e00\u4e2a\u8fdb\u7a0b\u7684\u3002<\/p>\n

        \n

        \u4e09\u3001\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u4e0e\u5207\u6362\u673a\u5236<\/h3>\n

        3.1 \u4ec0\u4e48\u662f\u8fdb\u7a0b\u4e0a\u4e0b\u6587（Process Context）？<\/h4>\n

        \u8fdb\u7a0b\u8fd0\u884c\u65f6，CPU \u6240\u6709\u5bc4\u5b58\u5668\u7684\u503c + PCB \u91cc\u7684\u8fdb\u7a0b\u72b6\u6001\u3001\u5185\u5b58\u6620\u5c04\u3001\u6253\u5f00\u6587\u4ef6\u7b49\u4fe1\u606f，\u5408\u8d77\u6765\u5c31\u662f\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u3002 \u901a\u4fd7\u8bf4\u5c31\u662f\u8fdb\u7a0b\u7684\u300c\u8fd0\u884c\u73b0\u573a\u5feb\u7167\u300d：\u8bb0\u5f55\u4e86\u8fdb\u7a0b\u8dd1\u5230\u54ea\u4e86\u3001\u4e2d\u95f4\u7ed3\u679c\u662f\u4ec0\u4e48\u3001\u6808\u5728\u54ea\u3001\u6253\u5f00\u4e86\u54ea\u4e9b\u6587\u4ef6\u3002<\/p>\n

        \u4e0a\u4e0b\u6587\u5206\u4e24\u7c7b：<\/p>\n

          \n
        • \u786c\u4ef6\u4e0a\u4e0b\u6587：CPU \u5bc4\u5b58\u5668\u7684\u503c，\u662f\u5207\u6362\u7684\u6838\u5fc3<\/li>\n
        • \u8f6f\u4ef6\u4e0a\u4e0b\u6587：PCB \u91cc\u7684\u8fdb\u7a0b\u72b6\u6001\u3001\u5185\u5b58\u4fe1\u606f\u3001\u4fe1\u53f7\u72b6\u6001\u7b49<\/li>\n<\/ul>\n

          3.2 \u5207\u6362\u7684 \u201c\u5f53\u5175\u7559\u7c4d\u201d \u6545\u4e8b<\/h4>\n

          \u7528\u519b\u8425\u8bad\u7ec3\u7c7b\u6bd4，\u4e00\u79d2\u61c2\u5207\u6362\u903b\u8f91：<\/p>\n

            \n
          • \u8bad\u7ec3\u573a = CPU<\/li>\n
          • \u6bcf\u4e2a\u58eb\u5175 = \u4e00\u4e2a\u8fdb\u7a0b<\/li>\n
          • \u58eb\u5175\u7684\u4e2a\u4eba\u88c5\u5907\u3001\u6b66\u5668 = \u8fdb\u7a0b\u4e0a\u4e0b\u6587<\/li>\n
          • \u50a8\u7269\u67dc = PCB<\/li>\n<\/ul>\n

            \u8bad\u7ec3\u89c4\u5219：\u6bcf\u4e2a\u4eba\u8bad\u7ec3 10 \u5206\u949f，\u65f6\u95f4\u5230\u7acb\u523b\u6362\u4eba\u3002<\/p>\n

          • \u58eb\u5175 A \u65f6\u95f4\u5230，\u628a\u81ea\u5df1\u7684\u88c5\u5907\u5168\u90e8\u6536\u8fdb\u81ea\u5df1\u7684\u50a8\u7269\u67dc，\u653e\u597d<\/li>\n
          • \u58eb\u5175 B \u8fc7\u6765，\u6253\u5f00\u81ea\u5df1\u7684\u50a8\u7269\u67dc，\u628a\u88c5\u5907\u62ff\u51fa\u6765\u7a7f\u6234\u597d<\/li>\n
          • \u58eb\u5175 B \u5f00\u59cb\u8bad\u7ec3，\u4ece\u4ed6\u4e0a\u6b21\u505c\u4e0b\u7684\u79d1\u76ee\u7ee7\u7eed<\/li>\n

            \u6574\u4e2a\u8fc7\u7a0b，A \u7684\u88c5\u5907\u4e0d\u4f1a\u4e22，B \u63a5\u7740\u81ea\u5df1\u4e0a\u6b21\u7684\u8fdb\u5ea6\u3002 \u8fdb\u7a0b\u5207\u6362\u5c31\u662f\u5b8c\u5168\u4e00\u6837\u7684\u903b\u8f91：<\/p>\n

              \n
            • \u65f6\u95f4\u7247\u5230，\u8fdb\u7a0b A \u628a\u5bc4\u5b58\u5668\u91cc\u7684\u6240\u6709\u6570\u636e，\u5b58\u56de\u81ea\u5df1\u7684 PCB（\u50a8\u7269\u67dc）<\/li>\n
            • \u8c03\u5ea6\u5668\u9009\u8fdb\u7a0b B，\u628a B \u7684 PCB \u91cc\u5b58\u7684\u4e0a\u4e0b\u6587，\u6062\u590d\u5230 CPU \u5bc4\u5b58\u5668\u91cc<\/li>\n
            • CPU \u4ece B \u7684\u7a0b\u5e8f\u8ba1\u6570\u5668\u6307\u5411\u7684\u4f4d\u7f6e，\u7ee7\u7eed\u6267\u884c<\/li>\n<\/ul>\n

              3.3 \u4e00\u6b21\u5b8c\u6574\u7684\u5207\u6362\u6d41\u7a0b<\/h4>\n

              \u4e00\u6b21\u5b8c\u6574\u7684\u8fdb\u7a0b\u5207\u6362，\u5206\u56db\u6b65：<\/p>\n

              \u7b2c\u4e00\u6b65：\u89e6\u53d1\u8c03\u5ea6<\/h5>\n

              \u65f6\u949f\u4e2d\u65ad\u89e6\u53d1，\u5185\u6838\u53d1\u73b0\u5f53\u524d\u8fdb\u7a0b\u65f6\u95f4\u7247\u7528\u5b8c\u4e86\u3002 \u6216\u8005\u8fdb\u7a0b\u4e3b\u52a8\u7b49\u5f85 IO（\u6bd4\u5982\u8bfb\u78c1\u76d8），\u4e3b\u52a8\u8ba9\u51fa CPU\u3002<\/p>\n

              \u7b2c\u4e8c\u6b65：\u4fdd\u5b58\u5f53\u524d\u8fdb\u7a0b\u4e0a\u4e0b\u6587<\/h5>\n

              \u5185\u6838\u628a\u5f53\u524d CPU \u6240\u6709\u5bc4\u5b58\u5668\u7684\u503c，\u5168\u90e8\u4fdd\u5b58\u5230\u5f53\u524d\u8fdb\u7a0b\u7684 task_struct \u7684\u4e0a\u4e0b\u6587\u5b57\u6bb5\u91cc\u3002 \u5305\u62ec\u7a0b\u5e8f\u8ba1\u6570\u5668 PC\u3001\u6808\u6307\u9488 SP\u3001\u6240\u6709\u901a\u7528\u5bc4\u5b58\u5668\u3001\u72b6\u6001\u5bc4\u5b58\u5668，\u4e00\u4e2a\u90fd\u4e0d\u80fd\u5c11\u3002 \u4fdd\u5b58\u5b8c，\u8fd9\u4e2a\u8fdb\u7a0b\u7684\u73b0\u573a\u5c31\u5b8c\u6574\u5c01\u5b58\u4e86\u3002<\/p>\n

              \u7b2c\u4e09\u6b65：\u8c03\u5ea6\u5668\u9009\u62e9\u4e0b\u4e00\u4e2a\u8fdb\u7a0b<\/h5>\n

              \u8c03\u5ea6\u7b97\u6cd5\u4ece\u8fd0\u884c\u961f\u5217\u91cc，\u9009\u51fa\u4e0b\u4e00\u4e2a\u8be5\u8fd0\u884c\u7684\u8fdb\u7a0b\u3002<\/p>\n

              \u7b2c\u56db\u6b65：\u6062\u590d\u65b0\u8fdb\u7a0b\u4e0a\u4e0b\u6587<\/h5>\n

              \u628a\u9009\u4e2d\u8fdb\u7a0b\u7684 PCB \u91cc\u5b58\u7684\u4e0a\u4e0b\u6587，\u5168\u90e8\u52a0\u8f7d\u5230 CPU \u5bc4\u5b58\u5668\u91cc\u3002 \u7a0b\u5e8f\u8ba1\u6570\u5668 PC \u53d8\u6210\u65b0\u8fdb\u7a0b\u7684\u6307\u4ee4\u5730\u5740，\u6808\u6307\u9488\u53d8\u6210\u65b0\u8fdb\u7a0b\u7684\u6808，\u901a\u7528\u5bc4\u5b58\u5668\u91cc\u662f\u65b0\u8fdb\u7a0b\u7684\u4e2d\u95f4\u6570\u636e\u3002<\/p>\n

              \u52a0\u8f7d\u5b8c\u6210\u90a3\u4e00\u523b，CPU \u5c31\u5f00\u59cb\u6267\u884c\u65b0\u8fdb\u7a0b\u7684\u6307\u4ee4，\u5c31\u50cf\u5b83\u4ece\u6ca1\u88ab\u6253\u65ad\u8fc7\u4e00\u6837\u3002<\/p>\n

              3.4 \u786c\u4ef6\u4e0a\u4e0b\u6587\u7684\u5177\u4f53\u4fdd\u5b58\u4e0e\u6062\u590d\u5b9e\u73b0<\/h4>\n

              \u4e0a\u4e0b\u6587\u5207\u6362\u4e0d\u662f\u7eaf\u8f6f\u4ef6\u505a\u7684，\u662f\u786c\u4ef6 + \u8f6f\u4ef6\u914d\u5408：<\/p>\n

            • \u4e2d\u65ad\u786c\u4ef6\u81ea\u52a8\u4fdd\u5b58：\u65f6\u949f\u4e2d\u65ad\u53d1\u751f\u65f6，CPU \u786c\u4ef6\u4f1a\u81ea\u52a8\u628a\u5f53\u524d\u7684 PC\u3001\u72b6\u6001\u5bc4\u5b58\u5668\u7b49\u5173\u952e\u5bc4\u5b58\u5668，\u538b\u5165\u5f53\u524d\u8fdb\u7a0b\u7684\u5185\u6838\u6808\u3002\u8fd9\u4e00\u6b65\u662f\u786c\u4ef6\u81ea\u52a8\u5b8c\u6210\u7684，\u4e0d\u7528\u5185\u6838\u4ee3\u7801\u5199\u3002<\/li>\n
            • \u5185\u6838\u8f6f\u4ef6\u8865\u5145\u4fdd\u5b58：\u5185\u6838\u63a5\u7740\u628a\u5269\u4e0b\u7684\u901a\u7528\u5bc4\u5b58\u5668\u3001\u6d6e\u70b9\u5bc4\u5b58\u5668\u7b49，\u4fdd\u5b58\u5230 PCB \u7684 thread_struct \u91cc\u3002<\/li>\n

              \u6062\u590d\u7684\u65f6\u5019\u53cd\u8fc7\u6765：<\/p>\n

                \n
              • \u5185\u6838\u5148\u4ece PCB \u6062\u590d\u901a\u7528\u5bc4\u5b58\u5668<\/li>\n
              • \u4e2d\u65ad\u8fd4\u56de\u65f6，\u786c\u4ef6\u81ea\u52a8\u4ece\u6808\u91cc\u6062\u590d PC\u3001\u72b6\u6001\u5bc4\u5b58\u5668，\u8df3\u8f6c\u5230\u65b0\u8fdb\u7a0b\u7ee7\u7eed\u6267\u884c<\/li>\n<\/ul>\n

                💡 \u4e3a\u4ec0\u4e48\u8981\u786c\u4ef6\u8f6f\u4ef6\u914d\u5408？ \u786c\u4ef6\u81ea\u52a8\u505a\u6700\u5173\u952e\u7684\u73b0\u573a\u4fdd\u62a4，\u4fdd\u8bc1\u4e2d\u65ad\u77ac\u95f4\u4e0d\u4f1a\u4e71；\u8f6f\u4ef6\u505a\u5269\u4e0b\u7684，\u7075\u6d3b\u9002\u914d\u4e0d\u540c\u67b6\u6784\u3002<\/p>\n

                \n

                \u56db\u3001\u5185\u6838\u6e90\u7801\u89c6\u89d2：\u4e0a\u4e0b\u6587\u5b58\u5728\u54ea\u91cc？<\/h3>\n

                4.1 \u4efb\u52a1\u72b6\u6001\u6bb5\u4e0e task_struct<\/h4>\n

                x86 \u67b6\u6784\u6709 TSS（Task State Segment，\u4efb\u52a1\u72b6\u6001\u6bb5）\u7684\u673a\u5236，\u7528\u6765\u5b58\u4efb\u52a1\u72b6\u6001\u3002 Linux \u6ca1\u6709\u7528\u786c\u4ef6\u7684\u591a\u4efb\u52a1 TSS \u5207\u6362，\u800c\u662f\u6bcf\u4e2a CPU \u53ea\u6709\u4e00\u4e2a TSS，\u5185\u6838\u81ea\u5df1\u628a\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u5b58\u5728 task_struct \u91cc\u7684 thread_struct \u5b57\u6bb5\u4e2d\u3002<\/p>\n

                struct task_struct {
                \n \/\/ … pid\u3001\u72b6\u6001\u3001\u5185\u5b58\u7b49\u4fe1\u606f
                \n struct thread_struct thread; \/\/ \u5b58\u653e\u786c\u4ef6\u4e0a\u4e0b\u6587
                \n \/\/ …
                \n};<\/p>\n

                thread_struct \u91cc\u5c31\u662f\u5b8c\u6574\u7684\u5bc4\u5b58\u5668\u5feb\u7167，\u5207\u6362\u7684\u65f6\u5019\u76f4\u63a5\u548c CPU \u5bc4\u5b58\u5668\u4ea4\u4e92\u3002<\/p>\n

                4.2 \u5185\u6838\u4e2d\u7684 current \u6307\u9488<\/h4>\n

                \u5185\u6838\u91cc\u6709\u4e00\u4e2a\u5168\u5c40\u6307\u9488 current，\u6c38\u8fdc\u6307\u5411\u5f53\u524d\u6b63\u5728 CPU \u4e0a\u8fd0\u884c\u7684\u8fdb\u7a0b\u7684 task_struct\u3002 \u5185\u6838\u968f\u65f6\u77e5\u9053 \u201c\u73b0\u5728\u662f\u8c01\u5728\u8dd1\u201d，\u4fdd\u5b58\u4e0a\u4e0b\u6587\u7684\u65f6\u5019，\u76f4\u63a5\u5f80 current \u6307\u5411\u7684 PCB \u91cc\u5b58\u5c31\u884c\u3002 \u5207\u6362\u5b8c\u6210\u540e，current \u6307\u9488\u4e5f\u8ddf\u7740\u6307\u5411\u65b0\u7684\u8fdb\u7a0b\u3002<\/p>\n

                \n

                \u4e94\u3001\u884d\u751f\u601d\u8003<\/h3>\n

                5.1 \u5168\u65b0\u8fdb\u7a0b vs \u5df2\u8c03\u5ea6\u8fc7\u7684\u8fdb\u7a0b<\/h4>\n

                \u540c\u6837\u662f\u4e0a CPU \u8fd0\u884c，\u4e24\u79cd\u8fdb\u7a0b\u7684\u4e0a\u4e0b\u6587\u4e0d\u4e00\u6837：<\/p>\n

                  \n
                • \u5168\u65b0\u8fdb\u7a0b：\u7b2c\u4e00\u6b21\u4e0a CPU，\u4e0a\u4e0b\u6587\u662f\u521d\u59cb\u5316\u7684\u503c\u3002PC \u6307\u5411\u7a0b\u5e8f\u5165\u53e3\u5730\u5740，\u6808\u6307\u9488\u6307\u5411\u6808\u9876，\u901a\u7528\u5bc4\u5b58\u5668\u90fd\u662f\u521d\u59cb\u503c\u3002\u76f8\u5f53\u4e8e\u65b0\u5175\u7b2c\u4e00\u6b21\u4e0a\u8bad\u7ec3\u573a，\u88c5\u5907\u90fd\u662f\u65b0\u7684\u3002<\/li>\n
                • \u5df2\u8c03\u5ea6\u8fc7\u7684\u8fdb\u7a0b：\u4e0a\u4e0b\u6587\u662f\u4e0a\u6b21\u88ab\u5207\u8d70\u65f6\u4fdd\u5b58\u7684\u73b0\u573a\u3002PC \u6307\u5411\u4e0a\u6b21\u6267\u884c\u5230\u7684\u90a3\u6761\u6307\u4ee4，\u5bc4\u5b58\u5668\u91cc\u662f\u4e0a\u6b21\u7684\u4e2d\u95f4\u7ed3\u679c\u3002\u6062\u590d\u540e\u63a5\u7740\u8dd1，\u5c31\u50cf\u6ca1\u88ab\u6253\u65ad\u8fc7\u3002<\/li>\n<\/ul>\n

                  5.2 \u5206\u65f6\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf<\/h4>\n

                  \u8868\u683c<\/p>\n\n\u7c7b\u578b\u8c03\u5ea6\u65b9\u5f0f\u7279\u70b9\u9002\u7528\u573a\u666f<\/tr>\n\n\n\n
                  \u5206\u65f6\u64cd\u4f5c\u7cfb\u7edf<\/td>\n\u65f6\u95f4\u7247\u8f6e\u8f6c，\u516c\u5e73\u4f18\u5148<\/td>\n\u54cd\u5e94\u5feb，\u591a\u4efb\u52a1\u4f53\u9a8c\u597d；\u4f46\u4e0d\u4fdd\u8bc1\u9ad8\u4f18\u5148\u7ea7\u4efb\u52a1\u7edd\u5bf9\u4f18\u5148<\/td>\n\u684c\u9762\u3001\u670d\u52a1\u5668，Linux \u5c5e\u4e8e\u8fd9\u4e00\u7c7b<\/td>\n<\/tr>\n
                  \u5b9e\u65f6\u64cd\u4f5c\u7cfb\u7edf<\/td>\n\u4f18\u5148\u7ea7\u62a2\u5360，\u9ad8\u4f18\u5148\u7ea7\u4efb\u52a1\u7acb\u523b\u62a2\u5360 CPU<\/td>\n\u5ef6\u8fdf\u6781\u4f4e，\u786e\u5b9a\u6027\u5f3a；\u4f46\u53ef\u80fd\u997f\u6b7b\u4f4e\u4f18\u5148\u7ea7\u4efb\u52a1<\/td>\n\u5de5\u4e1a\u63a7\u5236\u3001\u822a\u5929\u3001\u6c7d\u8f66\u7535\u5b50<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

                  Linux \u662f\u5178\u578b\u7684\u5206\u65f6\u7cfb\u7edf，\u517c\u987e\u516c\u5e73\u548c\u54cd\u5e94，\u9002\u5408\u670d\u52a1\u5668\u548c\u684c\u9762\u573a\u666f\u3002<\/p>\n

                  \n

                  \u516d\u3001\u4e0a\u4e0b\u6587\u5207\u6362\u7684\u5f00\u9500<\/h3>\n

                  \u5f88\u591a\u4eba\u4ee5\u4e3a\u5207\u6362\u662f\u514d\u8d39\u7684，\u5176\u5b9e\u5207\u6362\u5f00\u9500\u4e0d\u5c0f，\u8fd9\u4e5f\u662f\u4e3a\u4ec0\u4e48\u4e0d\u662f\u8fdb\u7a0b\u8d8a\u591a\u8d8a\u597d\u3002 \u5f00\u9500\u4e3b\u8981\u6765\u81ea\u4e24\u65b9\u9762：<\/p>\n

                • \u76f4\u63a5\u5f00\u9500：\u4fdd\u5b58\u6062\u590d\u5bc4\u5b58\u5668\u3001\u6267\u884c\u8c03\u5ea6\u4ee3\u7801，\u5360\u7528 CPU \u65f6\u95f4<\/li>\n
                • \u95f4\u63a5\u5f00\u9500：CPU \u7f13\u5b58（Cache）\u5931\u6548\u3002\u4e0a\u4e00\u4e2a\u8fdb\u7a0b\u7684\u6570\u636e\u8fd8\u5728\u7f13\u5b58\u91cc，\u65b0\u8fdb\u7a0b\u8fc7\u6765\u7f13\u5b58\u90fd\u662f\u65e7\u7684，\u8981\u91cd\u65b0\u4ece\u5185\u5b58\u8bfb\u6570\u636e，\u901f\u5ea6\u6162\u5f88\u591a\u3002\u8fdb\u7a0b\u8d8a\u5207\u6362，\u7f13\u5b58\u547d\u4e2d\u7387\u8d8a\u4f4e，\u6027\u80fd\u4e0b\u964d\u8d8a\u660e\u663e\u3002<\/li>\n

                  \u6240\u4ee5\u65f6\u95f4\u7247\u4e0d\u80fd\u592a\u5c0f，\u5207\u6362\u4e0d\u80fd\u592a\u9891\u7e41，\u5426\u5219\u5927\u90e8\u5206\u65f6\u95f4\u90fd\u8017\u5728\u5207\u6362\u548c\u7f13\u5b58\u5931\u6548\u4e0a，\u771f\u6b63\u5e72\u6d3b\u7684\u65f6\u95f4\u5c11\u3002<\/p>\n

                  \n

                  \u5168\u6587\u603b\u7ed3<\/h3>\n
                • \u65f6\u95f4\u7247\u8f6e\u8f6c：\u591a\u4efb\u52a1\u7684\u57fa\u7840，CPU \u5206\u6210\u65f6\u95f4\u7247，\u8fdb\u7a0b\u8f6e\u6d41\u4f7f\u7528，\u5b8f\u89c2\u5e76\u884c\u5fae\u89c2\u4e32\u884c\u3002<\/li>\n
                • \u5bc4\u5b58\u5668：CPU \u5185\u90e8\u9ad8\u901f\u5b58\u50a8\u5355\u5143，\u5b58\u653e\u5f53\u524d\u8fd0\u884c\u7684\u4e34\u65f6\u6570\u636e，\u6240\u6709\u8fdb\u7a0b\u5171\u4eab\u4e00\u5957\u786c\u4ef6\u5bc4\u5b58\u5668\u3002<\/li>\n
                • \u8fdb\u7a0b\u4e0a\u4e0b\u6587：\u8fdb\u7a0b\u8fd0\u884c\u7684\u5b8c\u6574\u73b0\u573a，\u6838\u5fc3\u662f CPU \u5bc4\u5b58\u5668\u7684\u503c，\u5b58\u5728 PCB \u7684 thread_struct \u91cc\u3002<\/li>\n
                • \u5207\u6362\u6d41\u7a0b：\u89e6\u53d1\u4e2d\u65ad \u2192 \u4fdd\u5b58\u5f53\u524d\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u5230 PCB \u2192 \u8c03\u5ea6\u9009\u65b0\u8fdb\u7a0b \u2192 \u6062\u590d\u65b0\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u5230 CPU \u2192 \u7ee7\u7eed\u6267\u884c\u3002<\/li>\n
                • \u8f6f\u786c\u914d\u5408：\u786c\u4ef6\u81ea\u52a8\u4fdd\u5b58\u5173\u952e\u5bc4\u5b58\u5668，\u5185\u6838\u8f6f\u4ef6\u8865\u5145\u4fdd\u5b58，\u534f\u540c\u5b8c\u6210\u4e0a\u4e0b\u6587\u5207\u6362\u3002<\/li>\n
                • \u5207\u6362\u5f00\u9500：\u4e0d\u4ec5\u6709\u76f4\u63a5\u7684\u4fdd\u5b58\u6062\u590d\u65f6\u95f4，\u8fd8\u6709\u7f13\u5b58\u5931\u6548\u7684\u95f4\u63a5\u5f00\u9500，\u5207\u6362\u9891\u7387\u8981\u5e73\u8861\u3002<\/li>\n

                  \u4e0b\u7bc7\u9884\u544a： \u8c03\u5ea6\u5668\u600e\u4e48\u4ece\u51e0\u767e\u4e2a\u8fdb\u7a0b\u91cc\u5feb\u901f\u9009\u51fa\u4e0b\u4e00\u4e2a？\u65e9\u671f O (n) \u8c03\u5ea6\u6709\u4ec0\u4e48\u95ee\u9898？Linux \u7ecf\u5178\u7684 O (1) \u8c03\u5ea6\u7b97\u6cd5\u662f\u600e\u4e48\u505a\u5230\u65e0\u8bba\u591a\u5c11\u8fdb\u7a0b，\u9009\u4e0b\u4e00\u4e2a\u90fd\u662f\u56fa\u5b9a\u65f6\u95f4？\u4e0b\u4e00\u7bc7\u6211\u4eec\u6df1\u5165\u8c03\u5ea6\u7b97\u6cd5，\u62c6\u89e3\u6d3b\u8dc3\u961f\u5217\u3001\u8fc7\u671f\u961f\u5217\u3001\u4f4d\u56fe\u4f18\u5316\u7684\u8bbe\u8ba1\u7cbe\u9ad3\u3002 \"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\"<\/p>\n","protected":false},"excerpt":{"rendered":"

                  \u89c2\u4f17\u8001\u7237\u4eec\u5927\u5bb6\u597d \u8fd9\u91cc\u662f\u90aa\u4feeKING\u7684\u72ec\u5bb6\u9891\u9053 \u672c\u6587\u5c5e\u4e8e\u7cfb\u5217Linux\u7cfb\u7edf\u7bc7 \u2014\u2014\u64cd\u4f5c\u6307\u4ee4 \u4e00\u8d77\u5b66Linux\u7684\u5c0f\u4f19\u4f34\u53ef\u8ba2\u9605\u4e13\u680f： Linux\u7cfb\u7edf\u7bc7 > \u4e0a\u4e00\u7bc7\u6211\u4eec\u8bb2\u5b8c\u4e86\u50f5\u5c38\u4e0e\u5b64\u513f\u8fdb\u7a0b，\u628a\u8fdb\u7a0b\u4ece\u521b\u5efa\u5230\u9000\u51fa\u7684\u751f\u547d\u5468\u671f\u8865\u5168\u4e86\u3002\u5f88\u591a\u4eba\u90fd\u77e5\u9053 Linux \u662f\u591a\u4efb\u52a1\u7cfb\u7edf，\u201c\u540c\u65f6\u201d \u8dd1\u51e0\u767e\u4e2a\u8fdb\u7a0b，\u4f46\u5f88\u5c11\u6709\u4eba\u60f3\u900f\u4e00\u4ef6\u4e8b： > > > CPU \u5c31\u90a3\u4e48\u51e0\u4e2a\u6838\u5fc3，\u4e00\u4e2a\u8fdb\u7a0b\u8dd1\u7740\u8dd1\u7740\u88ab\u5207\u8d70，\u8fc7\u4f1a\u513f\u53c8\u5207\u56de<\/p>\n","protected":false},"author":2,"featured_media":101387,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,43,44],"topic":[],"class_list":["post-101389","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-server","tag-linux","tag-43","tag-44"],"yoast_head":"\nRe:Linux \u7cfb\u7edf\u7bc7\uff08\u5341\u4e94\uff09\uff1a\u8fdb\u7a0b\u7bc7\uff08\u56db\uff09\uff1a\u8fdb\u7a0b\u5207\u6362\u6df1\u5ea6\u89e3\u6790 \u2014\u2014 CPU \u5bc4\u5b58\u5668\u3001\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u4e0e\u5207\u6362\u5168\u6d41\u7a0b\u4e07\u5b57\u8be6\u89e3 - 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