{"id":506,"date":"2023-11-30T14:53:24","date_gmt":"2023-11-30T06:53:24","guid":{"rendered":"http:\/\/mapleleaf666.vip\/?p=506"},"modified":"2023-11-30T14:53:25","modified_gmt":"2023-11-30T06:53:25","slug":"java%e6%80%bb%e7%bb%93%ef%bc%883%ef%bc%89-jvm","status":"publish","type":"post","link":"http:\/\/mapleleaf666.vip\/?p=506","title":{"rendered":"Java\u603b\u7ed3\uff083\uff09–JVM"},"content":{"rendered":"\n

\u5185\u5b58\u5206\u533a<\/h3>\n\n\n\n
\"\"<\/div><\/figure>\n\n\n\n

HotSpot\u521b\u5efa\u5bf9\u8c61\u8fc7\u7a0b<\/h3>\n\n\n\n
    \n
  1. \u7c7b\u52a0\u8f7d\u68c0\u67e5<\/li>\n\n\n\n
  2. \u5185\u5b58\u5206\u914d\uff1a\u7a7a\u95f2\u5217\u8868\u3001\u6307\u9488\u78b0\u649e<\/li>\n\n\n\n
  3. \u521d\u59cb\u5316\u96f6\u503c<\/li>\n\n\n\n
  4. \u8bbe\u7f6e\u5bf9\u8c61\u5934<\/li>\n\n\n\n
  5. \u6267\u884cinit<\/li>\n<\/ol>\n\n\n\n

    \u5185\u5b58\u5806\u7ed3\u6784<\/h3>\n\n\n\n
    \"\"<\/div><\/figure>\n\n\n\n

    \u5bf9\u8c61\u4f18\u5148\u5728Eden\u533a\u5206\u914d\u3002\u5f53 Eden \u533a\u6ca1\u6709\u8db3\u591f\u7a7a\u95f4\u8fdb\u884c\u5206\u914d\u65f6\uff0c\u865a\u62df\u673a\u5c06\u53d1\u8d77\u4e00\u6b21 Minor GC\u3002<\/p>\n\n\n\n

    \u5806\u5185\u5b58\u88ab\u901a\u5e38\u5206\u4e3a\u4e0b\u9762\u4e09\u90e8\u5206\uff1a<\/p>\n\n\n\n

      \n
    1. \u65b0\u751f\u4ee3\u5185\u5b58(Young Generation)\uff1aEden\u533a\u3001S0,S1<\/li>\n\n\n\n
    2. \u8001\u751f\u4ee3(Old Generation)\uff1aTenured<\/li>\n\n\n\n
    3. \u6c38\u4e45\u4ee3(Permanent Generation)\uff1aMetaSpace<\/li>\n<\/ol>\n\n\n\n

      \u5185\u5b58\u5206\u914d\u548c\u56de\u6536\u539f\u5219<\/h3>\n\n\n\n
        \n
      • \u5bf9\u8c61\u4f18\u5148\u5728Eden\u533a\u5206\u914d<\/li>\n\n\n\n
      • \u5f53Eden\u533a\u7a7a\u95f4\u4e0d\u8db3\uff0c\u901a\u8fc7\u5206\u914d\u62c5\u4fdd\u673a\u5236<\/strong> \u628a\u65b0\u751f\u4ee3\u7684\u5bf9\u8c61\u63d0\u524d\u8f6c\u79fb\u5230\u8001\u5e74\u4ee3\u4e2d\u53bb<\/li>\n\n\n\n
      • \u5927\u5bf9\u8c61\uff08\u6570\u7ec4\u3001\u5b57\u7b26\u4e32\uff09\u76f4\u63a5\u8fdb\u8001\u5e74\u4ee3<\/li>\n\n\n\n
      • \u5e74\u9f84\u8ba1\u7b97\uff1a\u6bcf\u7ecf\u8fc7\u4e00\u6b21Minor GC\uff0c\u5e74\u9f84\u589e\u52a01\uff1b\u5f53\u5b83\u7684\u5e74\u9f84\u589e\u52a0\u5230\u4e00\u5b9a\u7a0b\u5ea6\uff08\u9ed8\u8ba4\u4e3a 15 \u5c81\uff09\uff0c\u5c31\u4f1a\u88ab\u664b\u5347\u5230\u8001\u5e74\u4ee3\u4e2d<\/li>\n<\/ul>\n\n\n\n

        \u9488\u5bf9 HotSpot VM \u7684\u5b9e\u73b0\uff0c\u5b83\u91cc\u9762\u7684 GC \u5176\u5b9e\u51c6\u786e\u5206\u7c7b\u53ea\u6709\u4e24\u5927\u79cd\uff1a<\/p>\n\n\n\n

          \n
        • \u90e8\u5206\u6536\u96c6 (Partial GC)\uff1a\n
            \n
          • \u65b0\u751f\u4ee3\u6536\u96c6\uff08Minor GC \/ Young GC\uff09\uff1a\u53ea\u5bf9\u65b0\u751f\u4ee3\u8fdb\u884c\u5783\u573e\u6536\u96c6\uff1b<\/li>\n\n\n\n
          • \u8001\u5e74\u4ee3\u6536\u96c6\uff08Major GC \/ Old GC\uff09\uff1a\u53ea\u5bf9\u8001\u5e74\u4ee3\u8fdb\u884c\u5783\u573e\u6536\u96c6\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f Major GC \u5728\u6709\u7684\u8bed\u5883\u4e2d\u4e5f\u7528\u4e8e\u6307\u4ee3\u6574\u5806\u6536\u96c6\uff1b<\/li>\n\n\n\n
          • \u6df7\u5408\u6536\u96c6\uff08Mixed GC\uff09\uff1a\u5bf9\u6574\u4e2a\u65b0\u751f\u4ee3\u548c\u90e8\u5206\u8001\u5e74\u4ee3\u8fdb\u884c\u5783\u573e\u6536\u96c6\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • \u6574\u5806\u6536\u96c6 (Full GC)\uff1a\u6536\u96c6\u6574\u4e2a Java \u5806\u548c\u65b9\u6cd5\u533a\u3002<\/li>\n<\/ul>\n\n\n\n

            \u6b7b\u4ea1\u5bf9\u8c61\u5224\u65ad\u65b9\u6cd5<\/h3>\n\n\n\n

            \u5f15\u7528\u8ba1\u6570\u5668\u6cd5<\/h4>\n\n\n\n

            \u7ed9\u5bf9\u8c61\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u5f15\u7528\u8ba1\u6570\u5668\uff1a<\/p>\n\n\n\n

              \n
            • \u6bcf\u5f53\u6709\u4e00\u4e2a\u5730\u65b9\u5f15\u7528\u5b83\uff0c\u8ba1\u6570\u5668\u5c31\u52a0 1\uff1b<\/li>\n\n\n\n
            • \u5f53\u5f15\u7528\u5931\u6548\uff0c\u8ba1\u6570\u5668\u5c31\u51cf 1\uff1b<\/li>\n\n\n\n
            • \u4efb\u4f55\u65f6\u5019\u8ba1\u6570\u5668\u4e3a 0 \u7684\u5bf9\u8c61\u5c31\u662f\u4e0d\u53ef\u80fd\u518d\u88ab\u4f7f\u7528\u7684\u3002<\/li>\n<\/ul>\n\n\n\n

              \u5b9e\u73b0\u7b80\u5355\uff0c\u6548\u7387\u9ad8\uff0c\u4f46\u662f\u76ee\u524d\u4e3b\u6d41\u7684\u865a\u62df\u673a\u4e2d\u5e76\u6ca1\u6709\u9009\u62e9<\/strong>\u8fd9\u4e2a\u7b97\u6cd5\u6765\u7ba1\u7406\u5185\u5b58\uff0c\u5176\u6700\u4e3b\u8981\u7684\u539f\u56e0\u662f\u5b83\u5f88\u96be\u89e3\u51b3\u5bf9\u8c61\u4e4b\u95f4\u5faa\u73af\u5f15\u7528<\/strong>\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n

              \u53ef\u8fbe\u6027\u5206\u6790\u7b97\u6cd5<\/h4>\n\n\n\n

              \u901a\u8fc7\u4e00\u7cfb\u5217\u7684\u79f0\u4e3a \u201cGC Roots\u201d<\/strong> \u7684\u5bf9\u8c61\u4f5c\u4e3a\u8d77\u70b9\uff0c\u4ece\u8fd9\u4e9b\u8282\u70b9\u5f00\u59cb\u5411\u4e0b\u641c\u7d22\uff0c\u8282\u70b9\u6240\u8d70\u8fc7\u7684\u8def\u5f84\u79f0\u4e3a\u5f15\u7528\u94fe\uff0c\u5f53\u4e00\u4e2a\u5bf9\u8c61\u5230 GC Roots \u6ca1\u6709\u4efb\u4f55\u5f15\u7528\u94fe\u76f8\u8fde\u7684\u8bdd\uff0c\u5219\u8bc1\u660e\u6b64\u5bf9\u8c61\u662f\u4e0d\u53ef\u7528\u7684\uff0c\u9700\u8981\u88ab\u56de\u6536\u3002<\/p>\n\n\n\n

              \u53ef\u9009\u4e3aGC Roots\uff1a<\/p>\n\n\n\n

                \n
              • \u865a\u62df\u673a\u6808(\u6808\u5e27\u4e2d\u7684\u672c\u5730\u53d8\u91cf\u8868)\u4e2d\u5f15\u7528\u7684\u5bf9\u8c61<\/li>\n\n\n\n
              • \u672c\u5730\u65b9\u6cd5\u6808(Native \u65b9\u6cd5)\u4e2d\u5f15\u7528\u7684\u5bf9\u8c61<\/li>\n\n\n\n
              • \u65b9\u6cd5\u533a\u4e2d\u7c7b\u9759\u6001\u5c5e\u6027\u5f15\u7528\u7684\u5bf9\u8c61<\/li>\n\n\n\n
              • \u65b9\u6cd5\u533a\u4e2d\u5e38\u91cf\u5f15\u7528\u7684\u5bf9\u8c61<\/li>\n\n\n\n
              • \u6240\u6709\u88ab\u540c\u6b65\u9501\u6301\u6709\u7684\u5bf9\u8c61<\/li>\n<\/ul>\n\n\n\n

                \u5bf9\u8c61\u88ab\u6807\u8bb0\u4e24\u6b21\u624d\u56de\u6536\u3002<\/p>\n\n\n\n

                \u5f15\u7528\u7c7b\u578b<\/h4>\n\n\n\n
                  \n
                • \u5f3a\u5f15\u7528\uff1a\u4e00\u4e2a\u5bf9\u8c61\u5177\u6709\u5f3a\u5f15\u7528\uff0c\u90a3\u5c31\u7c7b\u4f3c\u4e8e\u5fc5\u4e0d\u53ef\u5c11\u7684\u751f\u6d3b\u7528\u54c1<\/strong>\uff0c\u5783\u573e\u56de\u6536\u5668\u7edd\u4e0d\u4f1a\u56de\u6536\u5b83\u3002\u5f53\u5185\u5b58\u7a7a\u95f4\u4e0d\u8db3\uff0cJava \u865a\u62df\u673a\u5b81\u613f\u629b\u51fa OutOfMemoryError \u9519\u8bef\uff0c\u4f7f\u7a0b\u5e8f\u5f02\u5e38\u7ec8\u6b62\uff0c\u4e5f\u4e0d\u4f1a\u9760\u968f\u610f\u56de\u6536\u5177\u6709\u5f3a\u5f15\u7528\u7684\u5bf9\u8c61\u6765\u89e3\u51b3\u5185\u5b58\u4e0d\u8db3\u95ee\u9898\u3002<\/li>\n\n\n\n
                • \u8f6f\u5f15\u7528\uff1a\u53ef\u6709\u53ef\u65e0\uff0c\u9700\u8981\u56de\u6536\u65f6\u5219\u4f1a\u56de\u6536<\/li>\n\n\n\n
                • \u5f31\u5f15\u7528\uff1a\u7c7b\u4f3c\u4e8e\u53ef\u6709\u53ef\u65e0\u7684\u751f\u6d3b\u7528\u54c1<\/strong>\u3002\u5f31\u5f15\u7528\u4e0e\u8f6f\u5f15\u7528\u7684\u533a\u522b\u5728\u4e8e\uff1a\u53ea\u5177\u6709\u5f31\u5f15\u7528\u7684\u5bf9\u8c61\u62e5\u6709\u66f4\u77ed\u6682\u7684\u751f\u547d\u5468\u671f\u3002\u4e00\u65e6\u88ab\u53d1\u73b0\uff0c\u65e0\u8bba\u5185\u5b58\u7a7a\u95f4\u662f\u5426\u8db3\u591f\uff0c\u90fd\u4f1a\u7acb\u9a6c\u88ab\u56de\u6536<\/li>\n\n\n\n
                • \u865a\u5f15\u7528\uff1a\u51e0\u4e4e\u76f8\u5f53\u4e8e\u6ca1\u6709\u5f15\u7528<\/li>\n<\/ul>\n\n\n\n

                  \u5224\u65ad\u65e0\u7528\u7c7b<\/h4>\n\n\n\n
                    \n
                  • \u8be5\u7c7b\u6240\u6709\u7684\u5b9e\u4f8b\u90fd\u5df2\u7ecf\u88ab\u56de\u6536\uff0c\u4e5f\u5c31\u662f Java \u5806\u4e2d\u4e0d\u5b58\u5728\u8be5\u7c7b\u7684\u4efb\u4f55\u5b9e\u4f8b\u3002<\/li>\n\n\n\n
                  • \u52a0\u8f7d\u8be5\u7c7b\u7684 ClassLoader<\/code> \u5df2\u7ecf\u88ab\u56de\u6536\u3002<\/li>\n\n\n\n
                  • \u8be5\u7c7b\u5bf9\u5e94\u7684 java.lang.Class<\/code> \u5bf9\u8c61\u6ca1\u6709\u5728\u4efb\u4f55\u5730\u65b9\u88ab\u5f15\u7528\uff0c\u65e0\u6cd5\u5728\u4efb\u4f55\u5730\u65b9\u901a\u8fc7\u53cd\u5c04\u8bbf\u95ee\u8be5\u7c7b\u7684\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n\n\n\n

                    \u5224\u65ad\u5e9f\u5f03\u5e38\u91cf<\/h4>\n\n\n\n

                    \u5982\u679c\u6ca1\u6709\u4efb\u4f55\u5bf9\u8c61\u5f15\u7528\uff0c\u5219\u89c6\u4f5c\u5e9f\u5f03<\/p>\n\n\n\n

                    \u5783\u573e\u6536\u96c6\u7b97\u6cd5<\/h3>\n\n\n\n

                    \u6807\u8bb0-\u6e05\u9664\u7b97\u6cd5<\/h4>\n\n\n\n

                    \u6807\u8bb0\u51fa\u6240\u6709\u4e0d\u9700\u8981\u56de\u6536\u7684\u5bf9\u8c61\uff0c\u5728\u6807\u8bb0\u5b8c\u6210\u540e\u7edf\u4e00\u56de\u6536\u6389\u6240\u6709\u6ca1\u6709\u88ab\u6807\u8bb0\u7684\u5bf9\u8c61\u3002<\/p>\n\n\n\n

                      \n
                    1. \u6548\u7387\u95ee\u9898<\/strong>\uff1a\u6807\u8bb0\u548c\u6e05\u9664\u4e24\u4e2a\u8fc7\u7a0b\u6548\u7387\u90fd\u4e0d\u9ad8\u3002<\/li>\n\n\n\n
                    2. \u7a7a\u95f4\u95ee\u9898<\/strong>\uff1a\u6807\u8bb0\u6e05\u9664\u540e\u4f1a\u4ea7\u751f\u5927\u91cf\u4e0d\u8fde\u7eed\u7684\u5185\u5b58\u788e\u7247\u3002<\/li>\n<\/ol>\n\n\n\n

                      \u590d\u5236\u7b97\u6cd5<\/h4>\n\n\n\n

                      \u89e3\u51b3\u6807\u8bb0-\u6e05\u9664\u7b97\u6cd5\u7684\u6548\u7387\u548c\u5185\u5b58\u788e\u7247\u95ee\u9898\u3002\u5c06\u5185\u5b58\u5206\u4e3a\u5927\u5c0f\u76f8\u540c\u7684\u4e24\u5757<\/strong>\uff0c\u6bcf\u6b21\u4f7f\u7528\u5176\u4e2d\u7684\u4e00\u5757<\/strong>\u3002\u5f53\u8fd9\u4e00\u5757\u7684\u5185\u5b58\u4f7f\u7528\u5b8c\u540e\uff0c\u5c31\u5c06\u8fd8\u5b58\u6d3b\u7684\u5bf9\u8c61\u590d\u5236\u5230\u53e6\u4e00\u5757\u53bb\uff0c\u7136\u540e\u518d\u628a\u4f7f\u7528\u7684\u7a7a\u95f4\u4e00\u6b21\u6e05\u7406\u6389\u3002\u8fd9\u6837\u5c31\u4f7f\u6bcf\u6b21\u7684\u5185\u5b58\u56de\u6536\u90fd\u662f\u5bf9\u5185\u5b58\u533a\u95f4\u7684\u4e00\u534a\u8fdb\u884c\u56de\u6536\u3002<\/p>\n\n\n\n

                        \n
                      • \u53ef\u7528\u5185\u5b58\u53d8\u5c0f<\/strong>\uff1a\u53ef\u7528\u5185\u5b58\u7f29\u5c0f\u4e3a\u539f\u6765\u7684\u4e00\u534a\u3002<\/li>\n\n\n\n
                      • \u4e0d\u9002\u5408\u8001\u5e74\u4ee3<\/strong>\uff1a\u5982\u679c\u5b58\u6d3b\u5bf9\u8c61\u6570\u91cf\u6bd4\u8f83\u5927\uff0c\u590d\u5236\u6027\u80fd\u4f1a\u53d8\u5f97\u5f88\u5dee\u3002<\/li>\n<\/ul>\n\n\n\n

                        \u6807\u8bb0-\u6574\u7406\u7b97\u6cd5<\/h4>\n\n\n\n

                        \u6807\u8bb0\u8fc7\u7a0b\u4ecd\u7136\u4e0e\u201c\u6807\u8bb0-\u6e05\u9664\u201d\u7b97\u6cd5\u4e00\u6837\uff0c\u4f46\u540e\u7eed\u6b65\u9aa4\u4e0d\u662f\u76f4\u63a5\u5bf9\u53ef\u56de\u6536\u5bf9\u8c61\u56de\u6536\uff0c\u800c\u662f\u8ba9\u6240\u6709\u5b58\u6d3b\u7684\u5bf9\u8c61\u5411\u4e00\u7aef\u79fb\u52a8\uff0c\u7136\u540e\u76f4\u63a5\u6e05\u7406\u6389\u7aef\u8fb9\u754c\u4ee5\u5916\u7684\u5185\u5b58\u3002<\/p>\n\n\n\n

                        \u591a\u4e86\u6574\u7406\u6b65\u9aa4\uff0c\u6548\u7387\u4e0d\u9ad8<\/p>\n\n\n\n

                        \u5206\u4ee3\u6536\u96c6\u7b97\u6cd5<\/h4>\n\n\n\n

                        \u6839\u636e\u5bf9\u8c61\u5b58\u6d3b\u5468\u671f\u7684\u4e0d\u540c\u5c06\u5185\u5b58\u5206\u4e3a\u51e0\u5757\u3002\u4e00\u822c\u5c06 Java \u5806\u5206\u4e3a\u65b0\u751f\u4ee3\u548c\u8001\u5e74\u4ee3\uff0c\u8fd9\u6837\u6211\u4eec\u5c31\u53ef\u4ee5\u6839\u636e\u5404\u4e2a\u5e74\u4ee3\u7684\u7279\u70b9\u9009\u62e9\u5408\u9002\u7684\u5783\u573e\u6536\u96c6\u7b97\u6cd5\u3002<\/p>\n\n\n\n

                          \n
                        • \u65b0\u751f\u4ee3\u4e2d\uff0c\u6bcf\u6b21\u6536\u96c6\u90fd\u4f1a\u6709\u5927\u91cf\u5bf9\u8c61\u6b7b\u53bb\uff0c\u6240\u4ee5\u53ef\u4ee5\u9009\u62e9\u201d\u6807\u8bb0-\u590d\u5236\u201c\u7b97\u6cd5\uff1b<\/li>\n\n\n\n
                        • \u8001\u5e74\u4ee3\u5bf9\u8c61\u5b58\u6d3b\u7387\u9ad8\uff0c\u4e14\u6ca1\u6709\u989d\u5916\u7a7a\u95f4\u505a\u5206\u914d\u62c5\u4fdd\uff0c\u5e38\u9009\u201c\u6807\u8bb0-\u6e05\u9664\u201d\u6216\u201c\u6807\u8bb0-\u6574\u7406\u201d\u7b97\u6cd5<\/li>\n<\/ul>\n\n\n\n

                          \u5783\u573e\u6536\u96c6\u5668<\/h3>\n\n\n\n

                          Serial \u6536\u96c6\u5668<\/h4>\n\n\n\n

                          \u6700\u57fa\u672c\u3001\u5386\u53f2\u6700\u60a0\u4e45\u7684\u5783\u573e\u6536\u96c6\u5668\uff0c\u5355\u7ebf\u7a0b\u3002\u65b0\u751f\u4ee3\u91c7\u7528\u6807\u8bb0-\u590d\u5236\u7b97\u6cd5\uff0c\u8001\u5e74\u4ee3\u91c7\u7528\u6807\u8bb0-\u6574\u7406\u7b97\u6cd5\u3002\u5b83\u5728\u8fdb\u884c\u5783\u573e\u6536\u96c6\u5de5\u4f5c\u7684\u65f6\u5019\u5fc5\u987b\u6682\u505c\u5176\u4ed6\u6240\u6709\u7684\u5de5\u4f5c\u7ebf\u7a0b\uff0c\u4f53\u9a8c\u5dee\u3002\u4f46\u7b80\u5355\u800c\u9ad8\u6548\uff08\u4e0e\u5176\u4ed6\u6536\u96c6\u5668\u7684\u5355\u7ebf\u7a0b\u76f8\u6bd4\uff09<\/strong><\/p>\n\n\n\n

                          ParNew \u6536\u96c6\u5668<\/h4>\n\n\n\n

                          \u4e0a\u9762\u7684\u591a\u7ebf\u7a0b\u7248\u672c\uff0c\u8bb8\u591a\u8fd0\u884c\u5728 Server \u6a21\u5f0f\u4e0b\u7684\u865a\u62df\u673a\u7684\u9996\u8981\u9009\u62e9<\/p>\n\n\n\n

                          Parallel Scavenge \u6536\u96c6\u5668<\/h4>\n\n\n\n

                          \u4f7f\u7528\u6807\u8bb0-\u590d\u5236\u7b97\u6cd5\u7684\u591a\u7ebf\u7a0b\u6536\u96c6\u5668\uff0c\u5173\u6ce8\u70b9\u662f\u541e\u5410\u91cf\uff08\u9ad8\u6548\u7387\u7684\u5229\u7528 CPU\uff09<\/p>\n\n\n\n

                          \u65b0\u751f\u4ee3\u91c7\u7528\u6807\u8bb0-\u590d\u5236\u7b97\u6cd5\uff0c\u8001\u5e74\u4ee3\u91c7\u7528\u6807\u8bb0-\u6574\u7406\u7b97\u6cd5\u3002<\/p>\n\n\n\n

                          CMS \u6536\u96c6\u5668<\/h4>\n\n\n\n

                          \u4e00\u79cd\u4ee5\u83b7\u53d6\u6700\u77ed\u56de\u6536\u505c\u987f\u65f6\u95f4\u4e3a\u76ee\u6807\u7684\u6536\u96c6\u5668\u3002\u5b83\u975e\u5e38\u7b26\u5408\u5728\u6ce8\u91cd\u7528\u6237\u4f53\u9a8c\u7684\u5e94\u7528\u4e0a\u4f7f\u7528\u3002\u662f HotSpot \u865a\u62df\u673a\u7b2c\u4e00\u6b3e\u771f\u6b63\u610f\u4e49\u4e0a\u7684\u5e76\u53d1\u6536\u96c6\u5668\uff0c\u5b83\u7b2c\u4e00\u6b21\u5b9e\u73b0\u4e86\u8ba9\u5783\u573e\u6536\u96c6\u7ebf\u7a0b\u4e0e\u7528\u6237\u7ebf\u7a0b\uff08\u57fa\u672c\u4e0a\uff09\u540c\u65f6\u5de5\u4f5c\u3002<\/p>\n\n\n\n

                          \u4e3b\u8981\u4f18\u70b9\uff1a\u5e76\u53d1\u6536\u96c6\u3001\u4f4e\u505c\u987f<\/strong>\u3002\u4f46\u662f\u5b83\u6709\u4e0b\u9762\u4e09\u4e2a\u660e\u663e\u7684\u7f3a\u70b9\uff1a<\/p>\n\n\n\n

                            \n
                          • \u5bf9 CPU \u8d44\u6e90\u654f\u611f\uff1b<\/strong><\/li>\n\n\n\n
                          • \u65e0\u6cd5\u5904\u7406\u6d6e\u52a8\u5783\u573e\uff1b<\/strong><\/li>\n\n\n\n
                          • \u5b83\u4f7f\u7528\u7684\u56de\u6536\u7b97\u6cd5-\u201c\u6807\u8bb0-\u6e05\u9664\u201d\u7b97\u6cd5\u4f1a\u5bfc\u81f4\u6536\u96c6\u7ed3\u675f\u65f6\u4f1a\u6709\u5927\u91cf\u7a7a\u95f4\u788e\u7247\u4ea7\u751f\u3002<\/strong><\/li>\n<\/ul>\n\n\n\n

                            \u7c7b\u52a0\u8f7d\u5668<\/h3>\n\n\n\n

                            JVM \u4e2d\u5185\u7f6e\u4e86\u4e09\u4e2a\u91cd\u8981\u7684 ClassLoader<\/code>\uff1a<\/p>\n\n\n\n

                              \n
                            1. BootstrapClassLoader<\/code>(\u542f\u52a8\u7c7b\u52a0\u8f7d\u5668)<\/strong>\uff1a\u6700\u9876\u5c42\u7684\u52a0\u8f7d\u7c7b\uff0c\u7531 C++\u5b9e\u73b0\uff0c\u901a\u5e38\u8868\u793a\u4e3a null\uff0c\u5e76\u4e14\u6ca1\u6709\u7236\u7ea7\uff0c\u4e3b\u8981\u7528\u6765\u52a0\u8f7d JDK \u5185\u90e8\u7684\u6838\u5fc3\u7c7b\u5e93\uff08 %JAVA_HOME%\/lib<\/code>\u76ee\u5f55\u4e0b\u7684 rt.jar<\/code>\u3001resources.jar<\/code>\u3001charsets.jar<\/code>\u7b49 jar \u5305\u548c\u7c7b\uff09\u4ee5\u53ca\u88ab -Xbootclasspath<\/code>\u53c2\u6570\u6307\u5b9a\u7684\u8def\u5f84\u4e0b\u7684\u6240\u6709\u7c7b\u3002<\/li>\n\n\n\n
                            2. ExtensionClassLoader<\/code>(\u6269\u5c55\u7c7b\u52a0\u8f7d\u5668)<\/strong>\uff1a\u4e3b\u8981\u8d1f\u8d23\u52a0\u8f7d %JRE_HOME%\/lib\/ext<\/code> \u76ee\u5f55\u4e0b\u7684 jar \u5305\u548c\u7c7b\u4ee5\u53ca\u88ab java.ext.dirs<\/code> \u7cfb\u7edf\u53d8\u91cf\u6240\u6307\u5b9a\u7684\u8def\u5f84\u4e0b\u7684\u6240\u6709\u7c7b\u3002<\/li>\n\n\n\n
                            3. AppClassLoader<\/code>(\u5e94\u7528\u7a0b\u5e8f\u7c7b\u52a0\u8f7d\u5668)<\/strong>\uff1a\u9762\u5411\u6211\u4eec\u7528\u6237\u7684\u52a0\u8f7d\u5668\uff0c\u8d1f\u8d23\u52a0\u8f7d\u5f53\u524d\u5e94\u7528 classpath \u4e0b\u7684\u6240\u6709 jar \u5305\u548c\u7c7b\u3002<\/li>\n<\/ol>\n\n\n\n
                              \"\"<\/div><\/figure>\n\n\n\n

                              \u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b<\/h3>\n\n\n\n

                              \u5f85\u8865\u5145\u3002\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

                              \u5185\u5b58\u5206\u533a HotSpot\u521b\u5efa\u5bf9\u8c61\u8fc7\u7a0b \u5185\u5b58\u5806\u7ed3\u6784 \u5bf9\u8c61\u4f18\u5148\u5728Eden\u533a\u5206\u914d\u3002\u5f53 Eden \u533a\u6ca1\u6709\u8db3\u591f\u7a7a\u95f4\u8fdb\u884c\u5206 […]<\/p>\n","protected":false},"author":1,"featured_media":510,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[33],"class_list":["post-506","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-note","tag-java"],"_links":{"self":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts\/506","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=506"}],"version-history":[{"count":1,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts\/506\/revisions"}],"predecessor-version":[{"id":511,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/posts\/506\/revisions\/511"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=\/wp\/v2\/media\/510"}],"wp:attachment":[{"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=506"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/mapleleaf666.vip\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}