{"id":308565,"date":"2024-05-20T21:04:34","date_gmt":"2024-05-20T13:04:34","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/308565.html"},"modified":"2024-05-20T21:05:04","modified_gmt":"2024-05-20T13:05:04","slug":"jvm-%e8%b0%83%e4%bc%98%e5%88%b0%e5%ba%95%e6%80%8e%e4%b9%88%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/308565.html","title":{"rendered":"jvm \u8c03\u4f18\u5230\u5e95\u600e\u4e48\u5b9e\u8df5"},"content":{"rendered":"

\"jvm<\/p>\n

\u8fd0\u7528JVM\u8c03\u4f18\u7684\u5b9e\u8df5\u53d6\u51b3\u4e8e\u5bf9\u5185\u5b58\u7ba1\u7406\u3001\u5783\u573e\u6536\u96c6\u5668\u7684\u9009\u62e9\u4e0e\u914d\u7f6e\u3001\u4ee3\u7801\u4f18\u5316\u4ee5\u53ca\u6027\u80fd\u76d1\u63a7\u3002\u9996\u5148\uff0c\u9700\u8981\u8bc6\u522b\u5e94\u7528\u7684\u6027\u80fd\u9700\u6c42<\/strong>\uff0c\u8fd9\u6d89\u53ca\u5230\u7406\u89e3\u5e94\u7528\u7684\u5185\u5b58\u5206\u914d\u6a21\u5f0f\u4e0e\u5de5\u4f5c\u8d1f\u8f7d\u3002\u4f8b\u5982\uff0c\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u670d\u52a1\u7aef\u5e94\u7528\u548c\u77ed\u65f6\u4efb\u52a1\u5904\u7406\u7684\u5ba2\u6237\u7aef\u7a0b\u5e8f\u53ef\u80fd\u4f1a\u6709\u4e0d\u540c\u7684\u4f18\u5316\u7b56\u7565\u3002\u63a5\u7740\u8981\u9009\u62e9\u5408\u9002\u7684\u5783\u573e\u6536\u96c6\u5668\uff0c\u6bd4\u5982G1\u6536\u96c6\u5668\u9002\u7528\u4e8e\u5177\u6709\u5927\u5185\u5b58\u7684\u591a\u6838\u670d\u52a1\u5668\uff0c\u800cZGC\u548cShenandoah\u6536\u96c6\u5668\u9002\u5408\u5ef6\u8fdf\u654f\u611f\u7684\u5e94\u7528\u3002\u5408\u7406\u914d\u7f6e\u5806\u5185\u5b58\u5927\u5c0f<\/strong>\uff0c\u907f\u514d\u8fc7\u5c0f\u5bfc\u81f4\u9891\u7e41\u7684\u5783\u573e\u56de\u6536\uff0c\u6216\u8fc7\u5927\u5bfc\u81f4\u957f\u65f6\u95f4\u7684\u5783\u573e\u56de\u6536\u6682\u505c\u3002\u8bc6\u522b\u548c\u4f18\u5316\u4ee3\u7801\u4e2d\u7684\u6027\u80fd\u74f6\u9888<\/strong>\u4e5f\u662f\u5b9e\u65bdJVM\u8c03\u4f18\u7684\u5173\u952e\u6b65\u9aa4\uff0c\u8fd9\u901a\u5e38\u9700\u8981\u501f\u52a9\u4e8e\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u6bd4\u5982JProfiler\u3001VisualVM\u7b49\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u7406\u89e3JVM\u67b6\u6784\u4e0e\u6027\u80fd\u6307\u6807<\/strong><\/h2>\n<\/p>\n

\u8981\u5b9e\u8df5JVM\u8c03\u4f18\uff0c\u9996\u5148\u9700\u8981\u5bf9JVM\u7684\u67b6\u6784\u6709\u6df1\u5165\u7684\u4e86\u89e3\u3002JVM\u67b6\u6784\u5305\u62ec\u5806\u5185\u5b58\u3001\u6808\u3001\u65b9\u6cd5\u533a\u3001\u7a0b\u5e8f\u8ba1\u6570\u5668\u7b49\u3002\u5176\u4e2d\uff0c\u5806\u5185\u5b58\u662f\u5783\u573e\u6536\u96c6\u7684\u4e3b\u8981\u533a\u57df\uff0c\u5b83\u88ab\u5212\u5206\u4e3a\u5e74\u8f7b\u4ee3\u548c\u8001\u5e74\u4ee3\u3002JVM\u6027\u80fd\u7684\u6307\u6807\u4e3b\u8981\u5305\u62ec\u541e\u5410\u91cf\u3001\u5ef6\u8fdf\u3001\u5185\u5b58\u5360\u7528\u7b49\u3002<\/p>\n<\/p>\n

\u4e8c\u3001\u9009\u62e9\u5408\u9002\u7684\u5783\u573e\u56de\u6536\u5668<\/strong><\/h3>\n<\/p>\n

\u5783\u573e\u6536\u96c6\u5668<\/strong>\u662fJVM\u8c03\u4f18\u4e2d\u975e\u5e38\u5173\u952e\u7684\u4e00\u90e8\u5206\u3002Oracle Hotspot JVM\u63d0\u4f9b\u4e86\u591a\u79cd\u6536\u96c6\u5668\uff0c\u5305\u62ecSerial\u3001Parallel\u3001CMS\u3001G1\u3001ZGC\u548cShenandoah\u7b49\u3002<\/p>\n<\/p>\n

    \n
  • Serial\u6536\u96c6\u5668<\/strong>\u9002\u7528\u4e8e\u5355CPU\u73af\u5883\u6216\u6709\u9650\u7684\u8d44\u6e90\u4e0b\u7684\u5e94\u7528\u3002<\/li>\n
  • Parallel\u6536\u96c6\u5668<\/strong>\u591a\u7528\u4e8e\u9700\u8981\u9ad8\u541e\u5410\u91cf\u7684\u591aCPU\u73af\u5883\u3002<\/li>\n
  • CMS\u6536\u96c6\u5668<\/strong>\u548cG1\u6536\u96c6\u5668<\/strong>\u4f18\u5148\u8003\u8651\u8f83\u4f4e\u7684\u505c\u987f\u65f6\u95f4\u3002<\/li>\n
  • ZGC<\/strong> \u548c Shenandoah<\/strong> \u6536\u96c6\u5668\u53ef\u4ee5\u5b9e\u73b0\u8fd1\u4e4e\u6682\u505c\u65f6\u95f4\u4e0d\u589e\u52a0\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u5783\u573e\u56de\u6536\u3002<\/li>\n<\/ul>\n

    \u9009\u62e9\u5408\u9002\u7684\u6536\u96c6\u5668\u901a\u5e38\u9700\u8981\u57fa\u4e8e\u5e94\u7528\u7684\u9700\u6c42\u548c\u884c\u4e3a\u8fdb\u884c\u3002<\/p>\n<\/p>\n

    \u4e09\u3001\u5806\u5185\u5b58\u7684\u914d\u7f6e\u4e0e\u8c03\u6574<\/strong><\/h3>\n<\/p>\n

    \u5806\u5185\u5b58\u7684\u914d\u7f6e<\/strong>\u5bf9JVM\u6027\u80fd\u5f71\u54cd\u663e\u8457\u3002\u6700\u5c0f\uff08-Xms\uff09\u548c<\/strong>\u6700\u5927\u5806\u5185\u5b58\uff08-Xmx\uff09\u7684\u8bbe\u5b9a\u53ef\u4ee5\u51b3\u5b9a\u7a0b\u5e8f\u5728\u8fd0\u884c\u65f6\u7684\u5185\u5b58\u4e0a\u4e0b\u754c\uff0c\u4ee5\u53ca\u53ef\u80fd\u9762\u4e34\u7684\u5783\u573e\u56de\u6536\u9891\u7387\u3002<\/p>\n<\/p>\n

    \u5e74\u8f7b\u4ee3\u7684\u5927\u5c0f\uff08-Xmn\uff09\u6216\u8005\u6bd4\u4f8b\uff08-XX:NewRatio\uff09\u7684\u8c03\u6574\u4f1a\u5f71\u54cd\u8001\u5e74\u4ee3\u7684\u5360\u6bd4\uff0c\u8fd9\u540c\u6837\u9700\u8981\u4f9d\u636e\u5e94\u7528\u7279\u5f81\u6765\u914d\u7f6e\u3002<\/p>\n<\/p>\n

    \u56db\u3001\u76d1\u63a7\u4e0e\u5206\u6790\u5de5\u5177\u7684\u8fd0\u7528<\/strong><\/h3>\n<\/p>\n

    \u6709\u6548\u7684JVM\u8c03\u4f18\u79bb\u4e0d\u5f00\u51c6\u786e\u7684\u76d1\u63a7\u4e0e\u5206\u6790\u3002\u5de5\u5177\u5982JConsole<\/strong>\u3001VisualVM<\/strong>\u6216Flight Recorder<\/strong>\u53ef\u7528\u4e8e\u8fd0\u884c\u65f6\u76d1\u63a7JVM\u7684\u6027\u80fd\uff0c\u5305\u62ecCPU\u5229\u7528\u7387\u3001\u5185\u5b58\u4f7f\u7528\u91cf\u3001\u5783\u573e\u6536\u96c6\u60c5\u51b5\u7b49\u3002<\/p>\n<\/p>\n

    GC\u65e5\u5fd7\u7684\u5206\u6790<\/strong>\u53ef\u4ee5\u501f\u52a9\u5de5\u5177\u5982GCViewer\u3001GCEasy\u7b49\uff0c\u8fd9\u53ef\u4ee5\u5e2e\u52a9\u5206\u6790\u5783\u573e\u56de\u6536\u884c\u4e3a\u5e76\u6307\u5bfc\u8c03\u4f18\u3002<\/p>\n<\/p>\n

    \u4e94\u3001\u4ee3\u7801\u5c42\u9762\u7684\u4f18\u5316<\/strong><\/h3>\n<\/p>\n

    \u9664\u4e86\u8c03\u6574JVM\u8fd0\u884c\u53c2\u6570\u5916\uff0c\u4ee3\u7801\u672c\u8eab\u7684\u4f18\u5316<\/strong>\u4e5f\u662f\u63d0\u9ad8\u6027\u80fd\u7684\u91cd\u8981\u624b\u6bb5\u3002\u4f18\u5316\u6570\u636e\u7ed3\u6784\u3001\u51cf\u5c11\u4e0d\u5fc5\u8981\u7684\u5bf9\u8c61\u521b\u5efa\u3001\u5229\u7528\u597d\u7f13\u5b58\u673a\u5236\u3001\u51cf\u5c11I\/O\u64cd\u4f5c\u9891\u6b21\u7b49\u65b9\u6cd5\u90fd\u53ef\u51cf\u5c11JVM\u7684\u8d1f\u62c5\u3002<\/p>\n<\/p>\n

    \u516d\u3001\u5176\u4ed6\u64cd\u4f5c\u7cfb\u7edf\u4e0e\u786c\u4ef6\u5c42\u9762\u7684\u8c03\u4f18<\/strong><\/h3>\n<\/p>\n

    JVM\u8c03\u4f18\u4e5f\u8981\u8003\u8651\u64cd\u4f5c\u7cfb\u7edf\u548c\u786c\u4ef6\u7684\u7279\u6027\uff0c\u4f8b\u5982NUMA\u67b6\u6784\u7684\u5904\u7406\u3001\u9009\u62e9\u5408\u9002\u7684\u6587\u4ef6\u7cfb\u7edf\u548c\u78c1\u76d8\u3001\u7f51\u7edc\u5e26\u5bbd\u548c\u5ef6\u8fdf\u7b49\uff0c\u8fd9\u4e9b\u786c\u4ef6\u7ea7\u522b\u7684\u4f18\u5316\u53ef\u4ee5\u63d0\u4f9b\u5e95\u5c42\u652f\u6491\u3002<\/p>\n<\/p>\n

    \u4e03\u3001\u6d4b\u8bd5\u4e0e\u8fed\u4ee3<\/strong><\/h3>\n<\/p>\n

    JVM\u8c03\u4f18\u4e0d\u662f\u4e00\u6b21\u6027\u7684\u8fc7\u7a0b\uff0c\u800c\u662f\u4e00\u4e2a\u6301\u7eed\u7684\u6d4b\u8bd5\u4e0e\u8fed\u4ee3\u8fc7\u7a0b\u3002\u538b\u529b\u6d4b\u8bd5<\/strong>\u548c\u6a21\u62df\u771f\u5b9e\u5de5\u4f5c\u8d1f\u8f7d\u7684\u73af\u5883<\/strong>\u5bf9\u4e8e\u89c2\u5bdf\u8c03\u4f18\u6548\u679c\u81f3\u5173\u91cd\u8981\u3002\u5229\u7528\u6d4b\u8bd5\u7ed3\u679c\u53bb\u5fae\u8c03JVM\u53c2\u6570\u4f7f\u4e4b\u9002\u5e94\u76ee\u6807\u6027\u80fd\u6307\u6807\uff0c\u7c7b\u4f3c\u8fd9\u6837\u7684\u5468\u671f\u5e94\u8be5\u6301\u7eed\u4e0d\u65ad\u7684\u91cd\u590d\u8fdb\u884c\u3002<\/p>\n<\/p>\n

    JVM\u8c03\u4f18\u662f\u4e00\u4e2a\u590d\u6742\u800c\u7ec6\u81f4\u7684\u5de5\u4f5c<\/strong>\uff0c\u5b83\u8981\u6c42\u5f00\u53d1\u8005\u4e0d\u4ec5\u6709\u624e\u5b9e\u7684\u7406\u8bba\u57fa\u7840\uff0c\u8fd8\u9700\u8981\u4e30\u5bcc\u7684\u5b9e\u8df5\u7ecf\u9a8c\u6765\u4e0d\u65ad\u8bd5\u9519\u548c\u7cbe\u7ec6\u5316\u8c03\u6574\u3002\u59cb\u7ec8\u8bb0\u5f97\uff0c\u6700\u597d\u7684\u8c03\u4f18\u7b56\u7565\u662f\u57fa\u4e8e\u5e94\u7528\u7279\u5f81\u7684\u6df1\u5ea6\u7406\u89e3\u548c\u6301\u7eed\u7684\u6027\u80fd\u76d1\u63a7\u53bb\u505a\u51fa\u5408\u7406\u7684\u51b3\u7b56\u3002<\/p>\n<\/p>\n

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

    Q: \u4e3a\u4ec0\u4e48\u9700\u8981\u8fdb\u884c JVM \u8c03\u4f18\uff1f<\/strong><\/p>\n

    A: JVM \u8c03\u4f18\u662f\u4e3a\u4e86\u4f18\u5316\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u6548\u7387\u3002\u901a\u8fc7\u8c03\u6574 JVM \u7684\u5404\u9879\u53c2\u6570\u548c\u914d\u7f6e\uff0c\u53ef\u4ee5\u63d0\u9ad8\u5e94\u7528\u7a0b\u5e8f\u7684\u54cd\u5e94\u901f\u5ea6\u3001\u51cf\u5c11\u5185\u5b58\u5360\u7528\u3001\u964d\u4f4e\u5783\u573e\u56de\u6536\u9891\u7387\u7b49\uff0c\u4ece\u800c\u63d0\u5347\u6574\u4f53\u7684\u8fd0\u884c\u6548\u679c\u3002<\/p>\n

    Q: \u54ea\u4e9b\u53c2\u6570\u53ef\u4ee5\u8fdb\u884c JVM \u8c03\u4f18\uff1f<\/strong><\/p>\n

    A: JVM \u8c03\u4f18\u6d89\u53ca\u591a\u4e2a\u53c2\u6570\u548c\u914d\u7f6e\u9879\uff0c\u4f46\u4ee5\u4e0b\u51e0\u70b9\u662f\u5e38\u89c1\u7684\u4f18\u5316\u65b9\u5411\uff1a <\/p>\n

      \n
    1. \u5806\u5185\u5b58\u8bbe\u7f6e\uff1a\u901a\u8fc7\u8c03\u6574\u5806\u5927\u5c0f\u3001\u5806\u7684\u5206\u4ee3\u6bd4\u4f8b\u7b49\u53c2\u6570\uff0c\u53ef\u4ee5\u6839\u636e\u5e94\u7528\u7a0b\u5e8f\u7684\u7279\u6027\u6765\u4f18\u5316\u5185\u5b58\u7684\u4f7f\u7528\u548c\u5783\u573e\u56de\u6536\u7684\u6548\u7387\u3002<\/li>\n
    2. \u5783\u573e\u56de\u6536\u5668\u9009\u62e9\uff1aJVM \u63d0\u4f9b\u4e86\u591a\u79cd\u4e0d\u540c\u7c7b\u578b\u7684\u5783\u573e\u56de\u6536\u5668\uff0c\u5982\u4e32\u884c\u5783\u573e\u56de\u6536\u5668\u3001\u5e76\u884c\u5783\u573e\u56de\u6536\u5668\u3001CMS \u5783\u573e\u56de\u6536\u5668\u7b49\uff0c\u6839\u636e\u5e94\u7528\u7a0b\u5e8f\u7684\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u5783\u573e\u56de\u6536\u5668\u53ef\u4ee5\u63d0\u5347\u6027\u80fd\u3002<\/li>\n
    3. \u7ebf\u7a0b\u6c60\u8bbe\u7f6e\uff1a\u5408\u7406\u914d\u7f6e\u7ebf\u7a0b\u6c60\u7684\u5927\u5c0f\u548c\u76f8\u5173\u53c2\u6570\uff0c\u53ef\u4ee5\u63d0\u9ad8\u591a\u7ebf\u7a0b\u5e94\u7528\u7a0b\u5e8f\u7684\u5e76\u53d1\u5904\u7406\u80fd\u529b\u548c\u6027\u80fd\u3002<\/li>\n
    4. JIT \u7f16\u8bd1\u5668\u914d\u7f6e\uff1a\u901a\u8fc7\u8c03\u6574 JIT \u7f16\u8bd1\u5668\u7684\u53c2\u6570\uff0c\u53ef\u4ee5\u9488\u5bf9\u4e0d\u540c\u7684\u4ee3\u7801\u6a21\u5f0f\u6765\u8fdb\u884c\u4f18\u5316\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u8fd0\u884c\u901f\u5ea6\u3002<\/li>\n<\/ol>\n

      Q: \u5982\u4f55\u8bc4\u4f30 JVM \u8c03\u4f18\u7684\u6548\u679c\uff1f<\/strong><\/p>\n

      A: \u5728\u8fdb\u884c JVM \u8c03\u4f18\u540e\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u6765\u8bc4\u4f30\u5176\u6548\u679c\uff1a <\/p>\n

        \n
      1. \u5e94\u7528\u7a0b\u5e8f\u6027\u80fd\u6d4b\u8bd5\uff1a\u8fd0\u884c\u4e00\u7cfb\u5217\u6027\u80fd\u6d4b\u8bd5\u7528\u4f8b\uff0c\u6bd4\u8f83\u8c03\u4f18\u524d\u540e\u7684\u6027\u80fd\u6307\u6807\uff0c\u5982\u541e\u5410\u91cf\u3001\u54cd\u5e94\u65f6\u95f4\u7b49\uff0c\u6765\u8bc4\u4f30\u8c03\u4f18\u6548\u679c\u3002<\/li>\n
      2. \u76d1\u63a7\u548c\u65e5\u5fd7\u5206\u6790\uff1a\u4f7f\u7528\u76d1\u63a7\u5de5\u5177\u5bf9 JVM \u7684\u8fd0\u884c\u60c5\u51b5\u8fdb\u884c\u5b9e\u65f6\u76d1\u63a7\uff0c\u89c2\u5bdf\u8c03\u4f18\u540e\u7684\u5404\u9879\u6307\u6807\u548c\u53d8\u5316\u8d8b\u52bf\u3002\u540c\u65f6\uff0c\u5206\u6790\u5e94\u7528\u7a0b\u5e8f\u7684\u65e5\u5fd7\u4fe1\u606f\uff0c\u67e5\u770b\u662f\u5426\u51fa\u73b0\u8fc7\u5185\u5b58\u6ea2\u51fa\u3001\u5783\u573e\u56de\u6536\u9891\u7e41\u7b49\u95ee\u9898\uff0c\u4ee5\u5224\u65ad\u8c03\u4f18\u662f\u5426\u6709\u6548\u3002<\/li>\n
      3. JVM \u53c2\u6570\u8c03\u6574\uff1a\u6839\u636e\u5b9e\u9645\u60c5\u51b5\uff0c\u53ef\u4ee5\u5c1d\u8bd5\u8fdb\u4e00\u6b65\u8c03\u6574 JVM \u7684\u53c2\u6570\u548c\u914d\u7f6e\uff0c\u8fdb\u884c\u591a\u8f6e\u8fed\u4ee3\u4f18\u5316\uff0c\u6700\u7ec8\u627e\u5230\u6700\u4f73\u7684\u8c03\u4f18\u65b9\u6848\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"\u8fd0\u7528JVM\u8c03\u4f18\u7684\u5b9e\u8df5\u53d6\u51b3\u4e8e\u5bf9\u5185\u5b58\u7ba1\u7406\u3001\u5783\u573e\u6536\u96c6\u5668\u7684\u9009\u62e9\u4e0e\u914d\u7f6e\u3001\u4ee3\u7801\u4f18\u5316\u4ee5\u53ca\u6027\u80fd\u76d1\u63a7\u3002\u9996\u5148\uff0c\u9700\u8981\u8bc6\u522b\u5e94\u7528\u7684\u6027\u80fd\u9700 […]","protected":false},"author":3,"featured_media":308603,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/308565"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=308565"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/308565\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/308603"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=308565"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=308565"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=308565"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}