{"id":203337,"date":"2024-05-10T04:07:22","date_gmt":"2024-05-09T20:07:22","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/203337.html"},"modified":"2024-05-10T04:07:27","modified_gmt":"2024-05-09T20:07:27","slug":"java%e8%99%9a%e6%8b%9f%e6%9c%ba%e7%9a%84%e5%a4%9a%e7%ba%bf%e7%a8%8b%e8%b0%83%e5%ba%a6%e7%ae%97%e6%b3%95%e6%98%af%e6%80%8e%e4%b9%88%e6%a0%b7%e7%9a%84","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/203337.html","title":{"rendered":"JAVA\u865a\u62df\u673a\u7684\u591a\u7ebf\u7a0b\u8c03\u5ea6\u7b97\u6cd5\u662f\u600e\u4e48\u6837\u7684"},"content":{"rendered":"

\"JAVA\u865a\u62df\u673a\u7684\u591a\u7ebf\u7a0b\u8c03\u5ea6\u7b97\u6cd5\u662f\u600e\u4e48\u6837\u7684\"<\/p>\n

Java\u865a\u62df\u673a\uff08JVM\uff09\u7684\u591a\u7ebf\u7a0b\u8c03\u5ea6\u7b97\u6cd5\u4e3b\u8981\u4f9d\u8d56\u4e8e\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\u7684\u7ebf\u7a0b\u8c03\u5ea6\u7b56\u7565\u4ee5\u53caJVM\u672c\u8eab\u7684\u5b9e\u73b0\u7ec6\u8282\u3002\u8fd9\u4e9b\u7b97\u6cd5\u4e3b\u8981\u5305\u62ec\u65f6\u95f4\u7247\u8f6e\u8f6c\uff08Round-Robin\uff09\u7b97\u6cd5\u3001\u4f18\u5148\u7ea7\uff08Priority-based\uff09\u8c03\u5ea6\u4ee5\u53ca\u516c\u5e73\uff08FAI<\/a>r\uff09\u8c03\u5ea6<\/strong>\u3002\u5176\u4e2d\uff0c\u4f18\u5148\u7ea7\u8c03\u5ea6<\/strong>\u662f\u6700\u4e3a\u5173\u952e\u548c\u5e38\u7528\u7684\u4e00\u4e2a\u65b9\u9762\u3002\u5728\u4f18\u5148\u7ea7\u8c03\u5ea6\u4e2d\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u4f1a\u88ab\u5206\u914d\u4e00\u4e2a\u4f18\u5148\u7ea7\u3002JVM\u6216\u64cd\u4f5c\u7cfb\u7edf\u6839\u636e\u8fd9\u4e9b\u4f18\u5148\u7ea7\u6765\u51b3\u5b9a\u54ea\u4e9b\u7ebf\u7a0b\u5c06\u83b7\u5f97CPU\u6267\u884c\u65f6\u95f4\u3002\u9ad8\u4f18\u5148\u7ea7\u7684\u7ebf\u7a0b\u6bd4\u4f4e\u4f18\u5148\u7ea7\u7684\u7ebf\u7a0b\u6709\u66f4\u9ad8\u7684\u673a\u4f1a\u88ab\u9009\u4e2d\u6267\u884c\u3002\u8fd9\u79cd\u65b9\u5f0f\u4f7f\u5f97\u7d27\u6025\u548c\u91cd\u8981\u7684\u4efb\u52a1\u53ef\u4ee5\u88ab\u66f4\u5feb\u5730\u6267\u884c\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u65f6\u95f4\u7247\u8f6e\u8f6c\u8c03\u5ea6\uff08ROUND-ROBIN\uff09<\/h3>\n<\/p>\n

\u65f6\u95f4\u7247\u8f6e\u8f6c\u8c03\u5ea6\u662f\u4e00\u79cd\u8f83\u4e3a\u516c\u5e73\u7684\u7ebf\u7a0b\u8c03\u5ea6\u7b97\u6cd5\uff0c\u5b83\u4e3a\u6bcf\u4e2a\u7ebf\u7a0b\u5206\u914d\u4e00\u4e2a\u65f6\u95f4\u7247\uff0c\u5373\u4e00\u6bb5\u65f6\u95f4\u5185\u5141\u8bb8\u8fd0\u884c\u7684\u65f6\u95f4\u3002\u6240\u6709\u7684\u7ebf\u7a0b\u90fd\u88ab\u63d2\u5165\u5230\u4e00\u4e2a\u5faa\u73af\u961f\u5217\u4e2d\u3002<\/p>\n<\/p>\n

    \n
  • \u5f53\u4e00\u4e2a\u7ebf\u7a0b\u7684\u65f6\u95f4\u7247\u8017\u5c3d\u65f6\uff0c\u5b83\u5c31\u4f1a\u88ab\u9001\u56de\u961f\u5217\u7684\u672b\u5c3e\uff0c\u800c\u961f\u5217\u7684\u4e0b\u4e00\u4e2a\u7ebf\u7a0b\u5219\u83b7\u5f97CPU\u5e76\u5f00\u59cb\u8fd0\u884c\u3002<\/li>\n
  • \u8fd9\u79cd\u7b56\u7565\u786e\u4fdd\u4e86\u6240\u6709\u7684\u7ebf\u7a0b\u90fd\u80fd\u83b7\u5f97\u5747\u7b49\u7684\u8fd0\u884c\u673a\u4f1a\u3002\u4f46\u662f\uff0c\u65f6\u95f4\u7247\u7684\u5927\u5c0f\u548c\u8c03\u5ea6\u7684\u6548\u7387\u76f4\u63a5\u5f71\u54cd\u5230\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u54cd\u5e94\u65f6\u95f4\u3002<\/li>\n<\/ul>\n

    \u4e8c\u3001\u4f18\u5148\u7ea7\u8c03\u5ea6<\/h3>\n<\/p>\n

    \u4f18\u5148\u7ea7\u8c03\u5ea6<\/strong>\u7b97\u6cd5\u5141\u8bb8\u7ebf\u7a0b\u62e5\u6709\u4e0d\u540c\u7684\u4f18\u5148\u7ea7\uff0c\u64cd\u4f5c\u7cfb\u7edf\u6216JVM\u4f1a\u4f18\u5148\u8c03\u5ea6\u90a3\u4e9b\u4f18\u5148\u7ea7\u9ad8\u7684\u7ebf\u7a0b\u3002<\/p>\n<\/p>\n

      \n
    • \u5728Java\u4e2d, \u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u4e00\u4e2a\u4f18\u5148\u7ea7\uff0c\u8303\u56f4\u4ece Thread.MIN_PRIORITY<\/code> (\u6700\u5c0f\u4f18\u5148\u7ea7) \u5230 Thread.MAX_PRIORITY<\/code> (\u6700\u5927\u4f18\u5148\u7ea7)\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e2a\u7ebf\u7a0b\u88ab\u5206\u914d\u4e86\u4e00\u4e2a\u6807\u51c6\u4f18\u5148\u7ea7 Thread.NORM_PRIORITY<\/code>\u3002<\/li>\n
    • \u5c3d\u7ba1\u5b58\u5728\u4f18\u5148\u7ea7\u8bbe\u7f6e\uff0c\u4f46\u5e76\u4e0d\u610f\u5473\u7740\u9ad8\u4f18\u5148\u7ea7\u7684\u7ebf\u7a0b\u4f1a\u5b8c\u5168\u5148\u4e8e\u4f4e\u4f18\u5148\u7ea7\u7ebf\u7a0b\u6267\u884c\u5b8c\u6bd5<\/strong>\u3002\u8fd9\u662f\u56e0\u4e3a\u5177\u4f53\u7684\u8c03\u5ea6\u7b56\u7565\u8fd8\u4f9d\u8d56\u4e8e\u64cd\u4f5c\u7cfb\u7edf\u7684\u7ebf\u7a0b\u8c03\u5ea6\u673a\u5236\uff0c\u4e00\u4e9b\u7cfb\u7edf\u53ef\u80fd\u4f1a\u5c3d\u91cf\u516c\u5e73\u5730\u5206\u914dCPU\u65f6\u95f4\u3002<\/li>\n<\/ul>\n

      \u4e09\u3001\u516c\u5e73\u8c03\u5ea6\uff08FAIR SCHEDULING\uff09<\/h3>\n<\/p>\n

      \u516c\u5e73\u8c03\u5ea6\u662f\u6307\u7cfb\u7edf\u5c3d\u53ef\u80fd\u6309\u7167\u7ebf\u7a0b\u5230\u8fbe\u7684\u987a\u5e8f\u6765\u8fdb\u884c\u8c03\u5ea6\uff0c\u786e\u4fdd\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u53ef\u4ee5\u516c\u5e73\u5730\u83b7\u5f97\u6267\u884c\u673a\u4f1a\u3002<\/p>\n<\/p>\n

        \n
      • \u516c\u5e73\u9501\u662f\u5b9e\u73b0\u516c\u5e73\u8c03\u5ea6\u7684\u4e00\u79cd\u673a\u5236\u3002\u5728Java\u4e2d\uff0cReentrantLock<\/code>\u7c7b\u5728\u521b\u5efa\u65f6\u53ef\u4ee5\u6307\u5b9a\u662f\u5426\u4e3a\u516c\u5e73\u9501\u3002\u5982\u679c\u8bbe\u5b9a\u4e3a\u516c\u5e73\u9501\uff0c\u7b49\u5f85\u65f6\u95f4\u6700\u957f\u7684\u7ebf\u7a0b\u5c06\u4f1a\u9996\u5148\u83b7\u5f97\u9501\u3002<\/li>\n
      • \u5c3d\u7ba1\u516c\u5e73\u8c03\u5ea6\u542c\u8d77\u6765\u975e\u5e38\u7406\u60f3\uff0c\u4f46\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u53ef\u80fd\u4f1a\u56e0\u4e3a\u9891\u7e41\u7684\u7ebf\u7a0b\u5207\u6362\u5bfc\u81f4\u8f83\u9ad8\u7684\u6027\u80fd\u5f00\u9500\u3002<\/li>\n<\/ul>\n

        \u56db\u3001\u7ebf\u7a0b\u72b6\u6001\u4e0e\u8c03\u5ea6<\/h3>\n<\/p>\n

        \u7ebf\u7a0b\u5728JVM\u4e2d\u7684\u751f\u547d\u5468\u671f\u5305\u542b\u4e86\u65b0\u5efa\u3001\u8fd0\u884c\u3001\u963b\u585e\u3001\u7b49\u5f85\u3001\u8ba1\u65f6\u7b49\u5f85\u548c\u7ec8\u6b62\u51e0\u79cd\u72b6\u6001\u3002\u7ebf\u7a0b\u8c03\u5ea6\u5668\u5c06\u6839\u636e\u7ebf\u7a0b\u7684\u72b6\u6001\u4ee5\u53ca\u5176\u4ed6\u56e0\u7d20\uff08\u5982\u4f18\u5148\u7ea7\uff09\u6765\u51b3\u5b9a\u7ebf\u7a0b\u7684\u6267\u884c\u3002<\/p>\n<\/p>\n

          \n
        • \u7ebf\u7a0b\u7684\u72b6\u6001\u8f6c\u6362\u5f71\u54cd\u7740\u7ebf\u7a0b\u8c03\u5ea6\u7684\u51b3\u7b56\u8fc7\u7a0b\u3002\u4f8b\u5982\uff0c\u53ea\u6709\u5904\u4e8e\u201c\u8fd0\u884c\u201d\u72b6\u6001\u7684\u7ebf\u7a0b\u624d\u4f1a\u88ab\u8003\u8651\u5206\u914dCPU\u65f6\u95f4\u7247\u3002<\/li>\n
        • \u5728\u591a\u7ebf\u7a0b\u7a0b\u5e8f\u4e2d\u5408\u7406\u7ba1\u7406\u7ebf\u7a0b\u7684\u72b6\u6001\u8f6c\u6362\uff0c\u6bd4\u5982\u907f\u514d\u957f\u65f6\u95f4\u5360\u7528CPU\u6216\u9891\u7e41\u7684\u7ebf\u7a0b\u72b6\u6001\u8f6c\u6362\uff0c\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u54cd\u5e94\u901f\u5ea6\u3002<\/li>\n<\/ul>\n

          \u4e94\u3001\u73b0\u4ee3\u64cd\u4f5c\u7cfb\u7edf\u548cJVM\u7684\u8c03\u5ea6\u4f18\u5316<\/h3>\n<\/p>\n

          \u968f\u7740\u73b0\u4ee3\u64cd\u4f5c\u7cfb\u7edf\u548cJVM\u7684\u53d1\u5c55\uff0c\u591a\u7ebf\u7a0b\u8c03\u5ea6\u7b97\u6cd5\u5df2\u7ecf\u88ab\u4e0d\u65ad\u4f18\u5316\uff0c\u4ee5\u63d0\u9ad8\u5e76\u884c\u7a0b\u5e8f\u7684\u6548\u679c\u3002<\/p>\n<\/p>\n

            \n
          • \u64cd\u4f5c\u7cfb\u7edf\u5c42\u9762\uff0c\u5305\u62ecLinux\u3001Windows\u7b49\uff0c\u90fd\u5728\u4e0d\u65ad\u5730\u4f18\u5316\u5176\u7ebf\u7a0b\u8c03\u5ea6\u673a\u5236\uff0c\u6bd4\u5982\u901a\u8fc7\u589e\u52a0CFS (Completely Fair Scheduler)<\/code>\u8c03\u5ea6\u5668\u6765\u6539\u5584Linux\u7684\u7ebf\u7a0b\u8c03\u5ea6\u3002<\/li>\n
          • \u5728JVM\u5c42\u9762\uff0c\u968f\u7740\u5783\u573e\u56de\u6536\u7b97\u6cd5\u548cJIT\u7f16\u8bd1\u6280\u672f\u7684\u8fdb\u6b65\uff0c\u4ee5\u53caJVM\u672c\u8eab\u5bf9\u5e76\u53d1\u7f16\u7a0b\u7684\u8bf8\u591a\u4f18\u5316\uff0c\u5982Fork\/Join<\/code>\u6846\u67b6\u7b49\uff0c\u90fd\u663e\u8457\u63d0\u9ad8\u4e86\u591a\u7ebf\u7a0b\u7a0b\u5e8f\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n

            \u7efc\u4e0a\u6240\u8ff0\uff0cJVM\u7684\u591a\u7ebf\u7a0b\u8c03\u5ea6\u7b97\u6cd5\u53ca\u5176\u6548\u7387\u9ad8\u5ea6\u4f9d\u8d56\u4e8e\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\u7684\u7ebf\u7a0b\u8c03\u5ea6\u673a\u5236\u4ee5\u53caJVM\u5b9e\u73b0\u7684\u5177\u4f53\u4f18\u5316\u63aa\u65bd\u3002\u4e86\u89e3\u548c\u5e94\u7528\u8fd9\u4e9b\u591a\u7ebf\u7a0b\u8c03\u5ea6\u7b97\u6cd5\u80fd\u591f\u5e2e\u52a9\u5f00\u53d1\u8005\u7f16\u5199\u51fa\u66f4\u9ad8\u6548\u3001\u54cd\u5e94\u66f4\u5feb\u7684Java\u5e76\u53d1\u7a0b\u5e8f\u3002<\/p>\n<\/p>\n

            \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

            1. \u591a\u7ebf\u7a0b\u8c03\u5ea6\u7b97\u6cd5\u662f\u5982\u4f55\u5b9e\u73b0\u7684\uff1f<\/strong><\/p>\n

            Java\u865a\u62df\u673a\u4e2d\u7684\u591a\u7ebf\u7a0b\u8c03\u5ea6\u7b97\u6cd5\u662f\u901a\u8fc7\u4f7f\u7528\u65f6\u95f4\u7247\u8f6e\u8f6c\u7684\u65b9\u5f0f\u5b9e\u73b0\u7684\u3002\u6bcf\u4e2a\u7ebf\u7a0b\u88ab\u5206\u914d\u4e00\u4e2a\u65f6\u95f4\u7247\uff0c\u5728\u8be5\u65f6\u95f4\u7247\u7ed3\u675f\u4e4b\u540e\uff0c\u865a\u62df\u673a\u5c06\u5207\u6362\u5230\u4e0b\u4e00\u4e2a\u7ebf\u7a0b\u5e76\u7ee7\u7eed\u6267\u884c\u3002\u8fd9\u79cd\u8c03\u5ea6\u7b97\u6cd5\u786e\u4fdd\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u80fd\u591f\u83b7\u5f97\u4e00\u5b9a\u7684\u6267\u884c\u65f6\u95f4\uff0c\u4ee5\u5e73\u8861\u5404\u4e2a\u7ebf\u7a0b\u4e4b\u95f4\u7684\u516c\u5e73\u6027\u3002<\/p>\n

            2. \u7ebf\u7a0b\u4f18\u5148\u7ea7\u5728\u591a\u7ebf\u7a0b\u8c03\u5ea6\u4e2d\u8d77\u5230\u4e86\u4ec0\u4e48\u4f5c\u7528\uff1f<\/strong><\/p>\n

            \u7ebf\u7a0b\u4f18\u5148\u7ea7\u5728\u591a\u7ebf\u7a0b\u8c03\u5ea6\u4e2d\u8d77\u5230\u4e86\u6307\u5bfc\u4f5c\u7528\u3002\u6bcf\u4e2a\u7ebf\u7a0b\u90fd\u6709\u4e00\u4e2a\u4f18\u5148\u7ea7\uff0c\u4f18\u5148\u7ea7\u8f83\u9ad8\u7684\u7ebf\u7a0b\u5728\u8c03\u5ea6\u65f6\u4f1a\u88ab\u66f4\u591a\u5730\u8003\u8651\u3002\u7136\u800c\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7ebf\u7a0b\u4f18\u5148\u7ea7\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u9ad8\u4f18\u5148\u7ea7\u7ebf\u7a0b\u4e00\u5b9a\u4f1a\u5728\u4f4e\u4f18\u5148\u7ea7\u7ebf\u7a0b\u4e4b\u524d\u6267\u884c\uff0c\u5b83\u53ea\u662f\u589e\u52a0\u4e86\u9ad8\u4f18\u5148\u7ea7\u7ebf\u7a0b\u88ab\u8c03\u5ea6\u7684\u6982\u7387\u800c\u5df2\u3002<\/p>\n

            3. \u591a\u7ebf\u7a0b\u8c03\u5ea6\u7b97\u6cd5\u5982\u4f55\u63d0\u9ad8\u7cfb\u7edf\u7684\u6027\u80fd\u548c\u54cd\u5e94\u80fd\u529b\uff1f<\/strong><\/p>\n

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