{"id":2920,"date":"2023-07-14T14:46:03","date_gmt":"2023-07-14T06:46:03","guid":{"rendered":"https:\/\/xinchewhd.com.cn\/?p=2920"},"modified":"2023-07-14T14:46:04","modified_gmt":"2023-07-14T06:46:04","slug":"jvm%e5%86%85%e5%ad%98%e5%88%92%e5%88%86%e7%b1%bb%e5%8a%a0%e8%bd%bdgc","status":"publish","type":"post","link":"https:\/\/xinchewhd.com.cn\/index.php\/jvm\/jvm%e5%86%85%e5%ad%98%e5%88%92%e5%88%86%e7%b1%bb%e5%8a%a0%e8%bd%bdgc\/","title":{"rendered":"JVM(\u5185\u5b58\u5212\u5206+\u7c7b\u52a0\u8f7d+GC)"},"content":{"rendered":"\n \t\n
\n

\u76ee\u5f55<\/strong><\/p>\n

? 1. JVM \u5185\u5b58\u5212\u5206<\/a><\/p>\n

? 2. JVM \u7c7b\u52a0\u8f7d<\/a><\/p>\n

? 2.1 \u7c7b\u578b\u52a0\u8f7d\u662f\u5e72\u5565\u7684<\/a><\/p>\n

? 2.2 \u7c7b\u52a0\u8f7d\u7684\u7b80\u7565\u6d41\u7a0b           <\/a><\/p>\n

? 2.3 \u4ec0\u4e48\u65f6\u5019\u4f1a\u8fdb\u884c\u7c7b\u52a0\u8f7d<\/a><\/p>\n

? 2.4 \u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b<\/a><\/p>\n

? 3. GC \u5783\u573e\u56de\u6536\u673a\u5236<\/a><\/p>\n

? 3.1 GC \u662f\u4ec0\u4e48<\/a><\/p>\n

? 3.2 GC \u56de\u6536\u54ea\u90e8\u5206\u5185\u5b58<\/a><\/p>\n

? 3.3 GC \u5177\u4f53\u662f\u600e\u4e48\u56de\u6536\u7684<\/a><\/p>\n

? 3.3.1 \u600e\u4e48\u5224\u5b9a\u67d0\u4e2a\u5bf9\u8c61\u662f\u5426\u662f\u5783\u573e (\u5f15\u7528\u8ba1\u6570\/\u53ef\u8fbe\u6027\u5206\u6790) <\/a><\/p>\n

? 3.3.2 \u5177\u4f53\u662f\u600e\u4e48\u56de\u6536\u7684 (\u6807\u8bb0\u6e05\u9664\/\u590d\u5236\u7b97\u6cd5\/\u6807\u8bb0\u6574\u7406\/\u5206\u4ee3\u56de\u6536)<\/a><\/p>\n

\n

JVM\u662f\u4e00\u4e2a\u6bd4\u8f83\u5927\u7684\u8bdd\u9898,\u4f46\u9762\u8bd5\u4e3b\u8981\u4ece\u8fd9\u4e09\u4e2a\u65b9\u9762\u8003<\/p>\n

    \n
  1.  JVM \u5185\u5bb9\u5212\u5206<\/strong><\/span><\/li>\n
  2.  JVM \u7c7b\u52a0\u8f7d<\/strong><\/span><\/li>\n
  3.  JVM \u7684\u5783\u573e\u56de\u6536<\/strong><\/span><\/li>\n<\/ol>\n<\/blockquote>\n

    ? 1. JVM \u5185\u5b58\u5212\u5206<\/span><\/strong><\/h1>\n

    Java\u7a0b\u5e8f, \u5c31\u662f\u4e00\u4e2a\u540d\u5b57\u4e3a Java \u7684\u8fdb\u7a0b. \u8fd9\u4e2a\u8fdb\u7a0b\u5c31\u662f\u6240\u8bf4\u7684 \"JVM\"<\/p>\n

    JVM \u5c31\u4f1a\u5148\u4ece\u64cd\u4f5c\u7cfb\u7edf\u8fd9\u91cc\u7533\u8bf7\u4e00\u5927\u5757\u5185\u5b58\u7a7a\u95f4,\u5728\u8fd9\u4e2a\u57fa\u7840\u4e0a\u518d\u628a\u8fd9\u4e2a\u5185\u5b58\u7a7a\u95f4\u5212\u5206\u6210\u51e0\u4e2a\u5c0f\u7684\u533a\u57df<\/p>\n

    \u533a\u57df\u5212\u5206:<\/p>\n

      \n
    1. \u5806: \u653e\u7684\u662f new \u7684\u5bf9\u8c61<\/strong><\/span><\/li>\n
    2. \u65b9\u6cd5\u533a: \u653e\u7684\u662f \u7c7b\u5bf9\u8c61 (\u52a0\u8f7d\u597d\u7684\u7c7b)<\/strong><\/span><\/li>\n
    3. \u6808: \u653e\u7684\u662f\u65b9\u6cd5\u4e4b\u95f4\u7684\u8c03\u7528\u5173\u7cfb (\u865a\u62df\u673a\u6808: java \u91cc\u9762\u7528\u6765\u4fdd\u5b58\u8c03\u7528\u5173\u7cfb\u7684\u5185\u5b58\u7a7a\u95f4;         \u672c\u5730\u65b9\u6cd5\u6808: \u672c\u5730\u65b9\u6cd5,\u4e5f\u5c31\u662f JVM \u5185\u90e8 C++ \u5199\u7684\u4ee3\u7801,\u8c03\u7528\u5173\u7cfb\u7684\u5185\u5b58\u7a7a\u95f4)<\/strong><\/span><\/li>\n
    4. \u7a0b\u5e8f\u8ba1\u6570\u5668: \u653e\u7684\u662f\u4e0b\u4e00\u4e2a\u8981\u6267\u884c\u7684\u6307\u4ee4\u7684\u5730\u5740 <\/strong><\/span><\/li>\n<\/ol>\n<\/blockquote>\n

      \n

      ? 2. JVM \u7c7b\u52a0\u8f7d<\/span><\/h1>\n

      ? 2.1 \u7c7b\u578b\u52a0\u8f7d\u662f\u5e72\u5565\u7684<\/strong><\/span><\/h2>\n

      Java \u7a0b\u5e8f\u5728\u8fd0\u884c\u4e4b\u524d,\u9700\u8981\u5148\u7f16\u8bd1    .java -->  .class\u6587\u4ef6(\u4e8c\u8fdb\u5236\u5b57\u8282\u7801\u6587\u4ef6)<\/strong><\/span><\/p>\n

      \u8fd0\u884c\u7684\u65f6\u5019,   .java\u8fdb\u7a0b(JVM) \u5c31\u4f1a\u8bfb\u53d6\u5bf9\u5e94\u7684   .class\u6587\u4ef6,\u5e76\u4e14\u89e3\u6790\u5185\u5bb9,\u5728\u5185\u5b58\u4e2d\u6784\u9020\u51fa\u7c7b\u5bf9\u8c61\u5e76\u8fdb\u884c\u521d\u59cb\u5316<\/strong><\/span><\/p>\n

      \u7c7b \u4ece \u6587\u4ef6 \u52a0\u8f7d\u5230 \u5185\u5b58 \u4e2d<\/strong><\/span><\/p><\/blockquote>\n

       \u7c7b\u5bf9\u8c61: \u5728\u524d\u9762\u4e2d\u7c7b\u5bf9\u8c61\u51fa\u73b0\u5728\u53cd\u5c04,jackson,synchronized \u4e2d<\/p>\n

      \u4e3b\u8981\u5c31\u662f\u63cf\u8ff0\u4e86\u8fd9\u4e2a\u7c7b\u662f\u5565\u6837\u5b50\u7684<\/p>\n

      \u6709\u54ea\u4e9b\u5c5e\u6027(\u5c5e\u6027\u540d\u5b57,\u7c7b\u578b,private\/public)<\/p>\n

      \u6709\u54ea\u4e9b\u65b9\u6cd5(\u65b9\u6cd5\u540d\u5b57,\u53c2\u6570\u4e2a\u6570,\u7c7b\u578b,\u8fd4\u56de\u503c\u7c7b\u578b,private\/public)<\/p>\n

      \u7ee7\u627f\u81ea\u54ea\u4e2a\u7236\u7c7b,\u5b9e\u73b0\u54ea\u4e9b\u63a5\u53e3<\/p>\n

      \u7c7b\u5bf9\u8c61\u4e5f\u662f\u521b\u5efa\u5b9e\u4f8b\u7684\u5177\u4f53\u4f9d\u636e<\/p><\/blockquote>\n

      \n

      ? 2.2 \u7c7b\u52a0\u8f7d\u7684\u7b80\u7565\u6d41\u7a0b<\/strong>      <\/span>     <\/h2>\n

      1. \u52a0\u8f7d: \u627e\u5230 .class \u6587\u4ef6,\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9, \u5e76\u4e14\u6309\u7167 .class \u89c4\u8303\u7684\u683c\u5f0f\u6765\u89e3\u6790<\/strong><\/span><\/p>\n

      2. \u8fde\u63a5<\/strong><\/span><\/p>\n

           1. \u9a8c\u8bc1: \u68c0\u67e5\u770b\u5f53\u524d\u7684 .class \u91cc\u7684\u5185\u5bb9\u683c\u5f0f\u662f\u5426\u7b26\u5408\u8981\u6c42<\/strong><\/span><\/p>\n

                         (\u4e0d\u540c\u7248\u672c\u7684 JDK \u5f97\u5230\u7684 .class \u662f\u4e0d\u517c\u5bb9\u7684)<\/strong><\/span><\/p>\n

           2. \u51c6\u5907: \u7ed9\u7c7b\u4e2d\u7684\u9759\u6001\u53d8\u91cf\u5206\u914d\u5185\u5b58\u7a7a\u95f4<\/strong><\/span><\/p>\n

           3. \u89e3\u6790: \u521d\u59cb\u5316\u5b57\u7b26\u4e32\u53d8\u91cf,\u628a \u7b26\u53f7\u5f15\u7528(\u5360\u4f4d\u7b26)  \u66ff\u6362\u6210 \u76f4\u63a5\u5f15\u7528(\u5185\u5b58\u5730\u5740) <\/strong><\/span>

      3. \u521d\u59cb\u5316: \u9488\u5bf9\u7c7b\u8fdb\u884c\u521d\u59cb\u5316, \u521d\u59cb\u5316\u9759\u6001\u6210\u5458, \u6267\u884c\u9759\u6001\u4ee3\u7801\u5757, \u5e76\u4e14\u52a0\u8f7d\u7236\u7c7b<\/strong><\/span><\/p><\/blockquote>\n

      ? 2.3 \u4ec0\u4e48\u65f6\u5019\u4f1a\u8fdb\u884c\u7c7b\u52a0\u8f7d<\/strong><\/span><\/h2>\n

      \u4f7f\u7528\u5230\u4e00\u4e2a\u7c7b\u7684\u65f6\u5019,\u5c31\u89e6\u53d1\u7c7b\u52a0\u8f7d<\/strong><\/span><\/p>\n

      (\u7c7b\u5e76\u4e0d\u4e00\u5b9a\u662f\u7a0b\u5e8f\u4e00\u542f\u52a8\u5c31\u52a0\u8f7d\u4e86,\u800c\u662f\u7b2c\u4e00\u6b21\u4f7f\u7528\u624d\u52a0\u8f7d [\u6709\u70b9\u7c7b\u4f3c\u4e8e\u61d2\u6c49\u6a21\u5f0f])<\/p>\n

      \u4f7f\u7528\u4e00\u4e2a\u7c7b,\u8fd9\u91cc\u6307\u7684\u662f<\/p>\n

        \n
      1. \u521b\u5efa\u8fd9\u4e2a\u7c7b\u7684\u5b9e\u4f8b<\/strong><\/span><\/li>\n
      2. \u4f7f\u7528\u4e86\u7c7b\u7684\u9759\u6001\u65b9\u6cd5 \/ \u9759\u6001\u5c5e\u6027<\/strong><\/span><\/li>\n
      3. \u4f7f\u7528\u7c7b\u7684\u5b50\u7c7b (\u52a0\u8f7d\u5b50\u7c7b\u4f1a\u89e6\u53d1\u52a0\u8f7d\u7236\u7c7b)<\/strong><\/span><\/li>\n<\/ol>\n<\/blockquote>\n
        \n

        ? 2.4 \u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b<\/span><\/h2>\n

        \u51b3\u5b9a\u4e86\u6309\u7167\u5565\u6837\u7684\u89c4\u5219\u6765\u5728\u54ea\u4e9b\u76ee\u5f55\u91cc\u53bb\u627e .class \u6587\u4ef6<\/p>\n

        \u4e5f\u5c31\u662f\u63cf\u8ff0\u4e86\u52a0\u8f7d\u5668\u76f8\u4e92\u914d\u5408\u7684\u5de5\u4f5c\u8fc7\u7a0b,\u5c31\u662f\u53cc\u4eb2\u59d4\u6d3e\u6a21\u578b<\/strong><\/span><\/p>\n

        JVM \u52a0\u8f7d\u7c7b, \u662f\u7531 \u7c7b\u52a0\u8f7d\u5668 (class loader) \u8fd9\u6837\u7684\u6a21\u5757\u6765\u8d1f\u8d23\u7684<\/strong><\/span><\/p>\n

        JVM \u81ea\u5e26\u4e86\u591a\u4e2a\u7c7b\u52a0\u8f7d\u5668,\u6bcf\u4e2a\u7c7b\u52a0\u8f7d\u5668\u5404\u81ea\u8d1f\u8d23\u4e00\u4e2a\u533a\u57df<\/strong><\/span><\/p>\n

          \n
        1. Bootstrap ClassLoader (\u8d1f\u8d23\u52a0\u8f7d\u6807\u51c6\u5e93\u4e2d\u7684\u7c7b)<\/li>\n
        2. Extension ClassLoader (\u8d1f\u8d23\u52a0\u8f7d JVM \u6269\u5c55\u5e93\u7684\u7c7b(\u8bed\u8a00\u89c4\u8303\u4e2d\u6ca1\u6709,\u4f46\u662fJVM\u5b9e\u73b0\u7684))<\/li>\n
        3. Application ClassLoader (\u8d1f\u8d23\u52a0\u8f7d\u6211\u4eec\u81ea\u5df1\u9879\u76ee\u4e2d\u7684\u81ea\u5b9a\u4e49\u7684\u7c7b)<\/li>\n<\/ol>\n<\/blockquote>\n

          \u6309\u7167\u8fd9\u6837\u7684\u987a\u5e8f\u52a0\u8f7d, \u6700\u5927\u7684\u597d\u5904\u5728\u4e8e<\/p>\n

          \u5982\u679c\u6211\u4eec\u81ea\u5df1\u5199\u4e2a\u7c7b,\u521a\u597d \u5168\u9650\u5b9a\u7c7b\u540d\u548c\u6807\u51c6\u5e93\u4e2d\u7684\u7c7b\u540d\u51b2\u7a81\u4e86,(\u6bd4\u5982\u6211\u4eec\u81ea\u5df1\u5199\u4e2a\u7c7b\u5c31\u53eb,java.lang.Thread)<\/p>\n

          \u6b64\u65f6\u4ecd\u7136\u53ef\u4ee5\u4fdd\u8bc1\u7c7b\u52a0\u8f7d\u65f6,\u53ef\u4ee5\u52a0\u8f7d\u5230\u6807\u51c6\u5e93\u7684\u7c7b,\u9632\u6b62\u4ee3\u7801\u52a0\u8f7d\u9519\u4e86\u5e26\u6765\u95ee\u9898 <\/p><\/blockquote>\n

          \n

          ? 3. GC \u5783\u573e\u56de\u6536\u673a\u5236<\/span><\/h1>\n

          ? 3.1 GC \u662f\u4ec0\u4e48<\/span><\/h2>\n

          GC (\u5783\u573e\u56de\u6536) \u662f\u4e00\u4e2a\u4e3b\u6d41\u7684\u5185\u5b58\u56de\u6536\u7684\u65b9\u6848<\/strong><\/span>, Java\/Python\/JS\/GO\/PHP \u90fd\u662f\u4f7f\u7528GC<\/p>\n

          \u6211\u4eec\u53ea\u9700\u8981\u8d1f\u8d23\u7533\u8bf7\u5185\u5b58, \u800c\u91ca\u653e\u5185\u5b58\u7684\u5de5\u4f5c, \u4ea4\u7ed9 JVM \u6765\u5b8c\u6210, JVM \u4f1a\u81ea\u52a8\u5224\u5b9a\u5f53\u524d\u7684\u5185\u5bb9\u662f\u5565\u65f6\u5019\u9700\u8981\u91ca\u653e, \u5f53\u8ba4\u4e3a\u8fd9\u4e2a\u5185\u5b58\u4e0d\u518d\u4f7f\u7528\u4e86, \u5c31\u81ea\u52a8\u91ca\u653e\u4e86<\/strong><\/span><\/p><\/blockquote>\n

          \n

          ? 3.2 GC \u56de\u6536\u54ea\u90e8\u5206\u5185\u5b58<\/span><\/h2>\n

          JVM \u4e3b\u8981\u5185\u5b58\u5206\u4e3a\u8fd9\u51e0\u4e2a\u90e8\u5206<\/p>\n

            \n
          • \u5806 : \u5b58\u653e\u7684\u65f6 new \u7684\u5bf9\u8c61 (GC \u4e3b\u8981\u5c31\u662f\u9488\u5bf9\u5806\u6765\u8fdb\u884c\u56de\u6536)<\/strong><\/span><\/li>\n
          • \u6808 : \u4fdd\u5b58\u65b9\u6cd5\u4e4b\u95f4\u7684\u8c03\u7528\u5173\u7cfb(\u91ca\u653e\u65f6\u673a\u786e\u5b9a, \u4e0d\u5fc5\u56de\u6536)<\/li>\n
          • \u65b9\u6cd5\u533a : \u653e\u7684\u662f \u7c7b\u5bf9\u8c61 (\u7c7b\u52a0\u8f7d, \u52a0\u8f7d\u4e4b\u540e\u4e5f\u4e0d\u592a\u4f1a\u5378\u8f7d)<\/li>\n
          • \u7a0b\u5e8f\u8ba1\u6570\u5668 : \u4fdd\u5b58\u4e0b\u4e00\u6761\u8981\u6267\u884c\u7684\u6307\u4ee4\u5730\u5740 (\u56fa\u5b9a\u5185\u5b58\u7a7a\u95f4, \u4e0d\u5fc5\u56de\u6536)<\/li>\n<\/ul>\n<\/blockquote>\n

            \n

            ? 3.3 GC \u5177\u4f53\u662f\u600e\u4e48\u56de\u6536\u7684<\/span><\/h2>\n
            \n
              \n
            1. \u5148\u627e\u51fa\u5783\u573e (\u770b\u770b\u8c01\u662f\u5783\u573e)<\/li>\n
            2. \u518d\u56de\u6536\u5783\u573e (\u91ca\u653e\u5185\u5b58)<\/li>\n<\/ol>\n<\/blockquote>\n

              ? 3.3.1 \u600e\u4e48\u5224\u5b9a\u67d0\u4e2a\u5bf9\u8c61\u662f\u5426\u662f\u5783\u573e (\u5f15\u7528\u8ba1\u6570\/\u53ef\u8fbe\u6027\u5206\u6790) <\/strong><\/span><\/h3>\n

              \u5982\u679c\u4e00\u4e2a\u5bf9\u8c61\u4e0d\u518d\u7528\u4e86,\u5c31\u8bf4\u660e\u662f\u5783\u573e\u4e86<\/p>\n

              \u5728 Java \u4e2d,\u5bf9\u8c61\u7684\u4f7f\u7528,\u9700\u8981\u51ed\u501f \u5f15\u7528<\/p>\n

              \u5047\u8bbe\u5982\u679c\u6709\u4e00\u4e2a\u5bf9\u8c61,\u5df2\u7ecf\u6ca1\u6709\u4efb\u4f55\u5f15\u7528\u80fd\u591f\u6307\u5411\u4ed6\u4e86,\u8fd9\u4e2a\u5bf9\u8c61\u81ea\u7136\u4e5f\u5c31\u65e0\u6cd5\u518d\u88ab\u4f7f\u7528\u4e86<\/p>\n

              \u6240\u4ee5\u6700\u5173\u952e\u7684\u8981\u70b9\u5c31\u662f:<\/p>\n

              \u901a\u8fc7\u5f15\u7528\u6765\u5224\u5b9a\u5f53<\/strong><\/span><\/p>\n

              \u524d\u5bf9\u8c61\u662f\u5426\u8fd8\u80fd\u88ab\u4f7f\u7528\u4e86,\u6ca1\u6709\u5f15\u7528\u6307\u5411\u5c31\u89c6\u4e3a\u662f\u65e0\u6cd5\u88ab\u4f7f\u7528<\/strong><\/span><\/p><\/blockquote>\n

              \u4e24\u79cd\u5e38\u89c1\u7684,\u5224\u5b9a\u5bf9\u8c61\u662f\u5426\u5b58\u5728\u5f15\u7528\u7684\u65b9\u6cd5<\/p>\n

              1. \u5f15\u7528\u8ba1\u6570 [\u4e0d\u662f JVM \u91c7\u53d6\u7684\u65b9\u6cd5, \u6bd4\u5982 Python,PHP]<\/strong><\/span><\/p>\n

              \u7ed9\u6bcf\u4e2a\u5bf9\u8c61\u90fd\u52a0\u4e0a\u4e2a\u8ba1\u6570\u5668,\u8fd9\u4e2a\u8ba1\u6570\u5668\u5c31\u8868\u793a \"\u5f53\u524d\u7684\u5bf9\u8c61\u6709\u51e0\u4e2a\u5f15\u7528\"<\/strong><\/span><\/p>\n

              \u5f53\u5f15\u7528\u8ba1\u6570\u5668, \u6570\u503c\u4e3a 0 \u65f6, \u5c31\u8bf4\u660e\u5f53\u524d\u8fd9\u4e2a\u5bf9\u8c61\u5df2\u7ecf\u65e0\u4eba\u80fd\u591f\u4f7f\u7528\u4e86,\u6b64\u65f6\u5c31\u53ef\u4ee5\u8fdb\u884c\u91ca\u653e\u4e86<\/strong><\/span><\/p><\/blockquote>\n

              \u5f15\u7528\u8ba1\u6570\u7684\u4f18\u70b9: \u7b80\u5355,\u5bb9\u6613\u5b9e\u73b0,\u6267\u884c\u6548\u7387\u6bd4\u8f83\u9ad8<\/p>\n

              \u7f3a\u70b9:<\/p>\n

                (1) \u7a7a\u95f4\u5229\u7528\u7387\u6bd4\u8f83\u4f4e, \u5c24\u5176\u662f\u5c0f\u5bf9\u8c61<\/strong><\/span><\/p>\n

                     (\u6bd4\u5982,\u8ba1\u6570\u5668\u662f\u4e2a int, \u5982\u679c\u4f60\u7684\u5bf9\u8c61\u672c\u8eab\u91cc\u9762\u53ea\u6709\u4e00\u4e2a int \u6210\u5458,\u5229\u7528\u7387\u4f4e)<\/p>\n

                (2) \u53ef\u80fd\u4f1a\u51fa\u73b0\u5faa\u73af\u5f15\u7528\u7684\u60c5\u51b5 <\/strong><\/span><\/p>\n

              2. \u53ef\u8fbe\u6027\u5206\u6790 [\u662f JVM \u91c7\u7528\u7684\u65b9\u6cd5, java]<\/strong><\/span><\/p>\n

              \u7ea6\u5b9a\u4e00\u4e9b\u7279\u5b9a\u7684\u53d8\u91cf,\u6210\u4e3a \"GC roots\"<\/strong><\/span><\/p>\n

              \u6bcf\u9694\u4e00\u6bb5\u65f6\u95f4,\u4ece GC toots \u51fa\u53d1, \u8fdb\u884c\u904d\u5386, \u770b\u770b\u5f53\u524d\u54ea\u4e9b\u53d8\u91cf\u662f\u80fd\u591f\u88ab\u8bbf\u95ee\u5230\u7684<\/strong><\/span><\/p>\n

              \u80fd\u88ab\u8bbf\u95ee\u5230\u7684\u904d\u5386\u5c31\u79f0\u4e3a\u662f \"\u53ef\u8fbe\" (\u5426\u5219\u5c31\u662f \"\u4e0d\u53ef\u8fbe\")<\/strong><\/span><\/p><\/blockquote>\n

              \n

              ? 3.3.2 \u5177\u4f53\u662f\u600e\u4e48\u56de\u6536\u7684 (\u6807\u8bb0\u6e05\u9664\/\u590d\u5236\u7b97\u6cd5\/\u6807\u8bb0\u6574\u7406\/\u5206\u4ee3\u56de\u6536)<\/h3>\n
              \n
                \n
              1. \u6807\u8bb0\u6e05\u9664<\/span><\/li>\n
              2. \u590d\u5236\u7b97\u6cd5<\/span><\/li>\n
              3. \u6807\u8bb0\u6574\u7406<\/span><\/li>\n
              4. \u5206\u4ee3\u56de\u6536<\/strong><\/span><\/li>\n<\/ol>\n<\/blockquote>\n

                (1) \u6807\u8bb0\u6e05\u9664<\/strong><\/span><\/p>\n

                \u8fd9\u79cd\u65b9\u5f0f\u6709\u4e00\u4e2a\u6700\u5927\u7684\u95ee\u9898: \u5185\u5b58\u788e\u7247<\/strong><\/span><\/p>\n

                \u4f1a\u5bfc\u81f4\u6574\u4e2a\u5185\u5b58 \"\u652f\u79bb\u7834\u788e\"<\/p>\n

                \u6bd4\u5982\u5047\u8bbe\u4e0a\u8ff0\u6bcf\u4e2a\u6df1\u8272\u7684\u533a\u57df\u662f 1k,\u6b64\u65f6\u6574\u4e2a\u6709 4k \u7a7a\u95f2\u7a7a\u95f4,\u4f46\u662f\u7531\u4e8e\u6b64\u65f6\u5185\u5b58\u662f\u5206\u6563\u7684,\u5bfc\u81f4\u5982\u679c\u60f3\u7533\u8bf7 2k \u7684\u5185\u5b58\u7a7a\u95f4,\u662f\u7533\u8bf7\u4e0d\u4e86\u7684<\/p><\/blockquote>\n

                (2) \u590d\u5236\u7b97\u6cd5<\/strong><\/span><\/p>\n

                \u590d\u5236\u7b97\u6cd5,\u53ef\u4ee5\u5f88\u597d\u7684\u89e3\u51b3 \u6807\u8bb0\u6e05\u9664 \u5e26\u6765\u7684 \u5185\u5b58\u788e\u7247\u95ee\u9898<\/p>\n

                \u4f46\u662f \u590d\u5236\u7b97\u6cd5 \u7684\u7f3a\u70b9\u662f:<\/p>\n

                  \n
                1. \u7a7a\u95f4\u5229\u7528\u7387\u66f4\u4f4e\u4e86<\/strong><\/span> (\u7528\u4e00\u534a\u4e22\u4e00\u534a)<\/li>\n
                2. \u5982\u679c\u4e00\u8f6e GC \u8fc7\u53bb,\u5927\u90e8\u5206\u5bf9\u8c61\u8981\u4fdd\u7559,\u53ea\u6709\u5c11\u90e8\u5206\u5bf9\u8c61\u8981\u56de\u6536,\u6b64\u65f6\u8fd9\u4e2a\u590d\u5236\u7684\u5f00\u9500\u5c31\u5f88\u5927\u4e86<\/strong><\/span><\/li>\n<\/ol>\n<\/blockquote>\n

                  (3) \u6807\u8bb0\u6574\u7406<\/strong><\/span><\/p>\n

                  \u7c7b\u4f3c\u4e8e \u987a\u5e8f\u8868 \u5220\u9664\u5143\u7d20,   \u6807\u8bb0\u6574\u7406\u4e3b\u8981\u5c31\u662f  \u642c\u8fd0\u64cd\u4f5c<\/strong><\/span><\/p>\n

                  \u8fd9\u4e2a\u65b9\u5f0f,\u76f8\u5bf9\u4e8e\u4e0a\u8ff0\u7684\u590d\u5236\u7b97\u6cd5\u6765\u8bf4,\u7a7a\u95f4\u5229\u7528\u7387\u6bd4\u4e4b\u524d\u9ad8,\u540c\u65f6\u4e5f\u8fd8\u662f\u80fd\u591f\u89e3\u51b3\u5185\u5b58\u788e\u7247\u95ee\u9898,\u4f46\u662f\u642c\u8fd0\u64cd\u4f5c\u662f\u6bd4\u8f83\u8017\u65f6\u7684<\/strong><\/span><\/p><\/blockquote>\n

                  (4) \u5206\u4ee3\u56de\u6536<\/strong><\/span><\/p>\n

                  \u4e0a\u9762\u7684\u4e09\u79cd\u65b9\u5f0f,\u90fd\u662f\u5f88\u975e\u5e38\u597d\u7684\u65b9\u6cd5,\u90fd\u6709\u5404\u81ea\u7684\u7279\u70b9<\/p>\n

                  \u6240\u4ee5\u5c31\u9700\u8981\u6839\u636e\u5b9e\u9645\u7684\u573a\u666f,\u9009\u62e9\u5bf9\u5e94\u7684\u89e3\u51b3\u65b9\u6cd5<\/strong><\/span><\/p>\n

                  \u8fd9\u5c31\u6709\u4e86 \"\u5206\u4ee3\u56de\u6536\" \u7684\u7b56\u7565, \u5c31\u662f\u628a\u4e0a\u9762\u7684\u65b9\u6cd5\u90fd\u7efc\u5408\u5728\u4e00\u8d77<\/strong><\/span><\/p>\n

                  \u6839\u636e\u5bf9\u8c61\u4e0d\u540c\u7684\u7279\u70b9,\u91c7\u53d6\u4e0d\u540c\u7684\u56de\u6536\u65b9\u5f0f<\/strong><\/span><\/p>\n

                  \u8fd9\u91cc\u7684\u6839\u636e\u5bf9\u8c61\u4e0d\u540c\u7684\u7279\u70b9: \u662f\u6839\u636e\u5bf9\u8c61\u7684\u5e74\u9f84(\u4f9d\u636e GC \u7684\u8f6e\u6b21\u6765\u7b97\u7684)\u6765\u5212\u5206\u7684<\/strong><\/span><\/p>\n

                  \u6709\u4e00\u7ec4\u7ebf\u7a0b,\u5468\u671f\u6027\u7684\u626b\u63cf\u4ee3\u7801\u4e2d\u6240\u6709\u7684\u5bf9\u8c61,\u5982\u679c\u4e00\u4e2a\u5bf9\u8c61,\u7ecf\u5386\u4e86\u4e00\u6b21 GC \u6ca1\u6709\u88ab\u56de\u6536,\u5c31\u8ba4\u4e3a\u5e74\u9f84 +1<\/p><\/blockquote>\n

                  \u6839\u636e\u5bf9\u8c61\u7684\u5e74\u9f84\u8fdb\u884c\u5206\u7c7b,\u628a\u5806\u4e2d\u7684\u5bf9\u8c61\u5206\u4e3a\u4e86,<\/p>\n

                  \u65b0\u751f\u4ee3(\u5e74\u9f84\u5c0f\u7684\u5bf9\u8c61)    \u548c    \u8001\u5e74\u4ee3 (\u5e74\u9f84\u5927\u7684\u5bf9\u8c61)<\/strong><\/span><\/p>\n

                  \u4f46\u662f\u8fd8\u6709\u4e2a\u7279\u6b8a\u60c5\u51b5\u5c31\u662f<\/p>\n

                  \u5982\u679c\u5bf9\u8c61\u662f\u4e00\u4e2a\u975e\u5e38\u5927\u7684\u5bf9\u8c61,\u5219\u76f4\u63a5\u8fdb\u5165\u8001\u5e74\u4ee3<\/strong><\/span><\/p>\n

                  \u56e0\u4e3a\u5bf9\u4e00\u4e2a\u5927\u7684\u5bf9\u8c61\u8fdb\u884c\u590d\u5236\u7b97\u6cd5,\u5f00\u9500\u592a\u5927\u4e86<\/p>\n

                  \u5e76\u4e14\u8fd9\u662f\u4e00\u4e2a\u6bd4\u8f83\u5927\u7684\u5bf9\u8c61, \u65e2\u7136\u80fd\u521b\u5efa\u8fd9\u4e48\u5927\u7684\u5bf9\u8c61,\u90a3\u80af\u5b9a\u4e5f\u4e0d\u662f\u7acb\u5373\u5c31\u9500\u6bc1\u7684 <\/p><\/blockquote>\n<\/div>\n

                  \u672c\u7bc7\u6587\u7ae0\u6765\u6e90\u4e8eCSDN\uff1ahttps:\/\/blog.csdn.net\/m0_58761900\/article\/details\/128165028<\/p>\n","raw":"","protected":false},"excerpt":{"rendered":"

                  \u76ee\u5f55 ? 1. JVM \u5185\u5b58\u5212\u5206 ? 2. JVM \u7c7b\u52a0\u8f7d ? 2.1 \u7c7b\u578b\u52a0\u8f7d\u662f\u5e72\u5565\u7684 ? 2.2 \u7c7b\u52a0\u8f7d\u7684\u7b80\u7565\u6d41\u7a0b  …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"emotion":"","emotion_color":"","title_style":"","license":"","footnotes":""},"categories":[27],"tags":[],"class_list":["post-2920","post","type-post","status-publish","format-standard","hentry","category-jvm"],"post_thumbnail_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-32\/20230714144532d7d719702.png","content_first_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-32\/20230714144532d7d719702.png","post_medium_image_300":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-32\/20230714144532d7d719702.png","post_thumbnail_image_624":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-32\/20230714144532d7d719702.png","post_frist_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-32\/20230714144532d7d719702.png","post_medium_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-32\/20230714144532d7d719702.png","post_large_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-32\/20230714144532d7d719702.png","post_full_image":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-32\/20230714144532d7d719702.png","post_all_images":[{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-32\/20230714144532d7d719702.png","id":"image0"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-32\/20230714144532d7d719702.png","id":"image1"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-33\/20230714144533343499249.png","id":"image2"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-33\/20230714144533343499249.png","id":"image3"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-34\/202307141445340000fa7bf.png","id":"image4"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-34\/202307141445340000fa7bf.png","id":"image5"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-34\/2023071414453405057df8c.png","id":"image6"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-34\/2023071414453405057df8c.png","id":"image7"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-35\/20230714144535eded3b8f2.png","id":"image8"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-35\/20230714144535eded3b8f2.png","id":"image9"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-35\/202307141445354a4a14fd3.png","id":"image10"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-35\/202307141445354a4a14fd3.png","id":"image11"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-36\/202307141445367a7a274ee.png","id":"image12"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-36\/202307141445367a7a274ee.png","id":"image13"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-37\/202307141445377474e42c0.png","id":"image14"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-37\/202307141445377474e42c0.png","id":"image15"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-37\/20230714144537252503ed9.png","id":"image16"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-37\/20230714144537252503ed9.png","id":"image17"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-38\/202307141445383535522af.png","id":"image18"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-38\/202307141445383535522af.png","id":"image19"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-38\/2023071414453803034c7a4.png","id":"image20"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-38\/2023071414453803034c7a4.png","id":"image21"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-38\/20230714144538898914e28.png","id":"image22"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-38\/20230714144538898914e28.png","id":"image23"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-39\/20230714144539ebeb87d1d.png","id":"image24"},{"imagesurl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/default\/nine\/2023-07-14\/14-45-39\/20230714144539ebeb87d1d.png","id":"image25"}],"videoAdId":"","listAd":"0","listAdId":"","listAdEvery":6,"total_comments":0,"category_name":"JVM","post_date":"2023-07-14","like_count":"0","praiseWord":"\u9f13\u52b1","copyright_state":"","excitationAd":"0","rewardedVideoAdId":"","detailAdId":"","detailAd":"0","enterpriseMinapp":"0","audios":[],"postImageUrl":"https:\/\/wp-moto-1258805347.cos.ap-shanghai.myqcloud.com\/2023\/05\/20230519082947553.jpg","avatarurls":[],"related_posts":null,"pageviews":952,"next_post_id":2922,"next_post_title":"2023\u5e74\u6700\u65b0kafka\u5e38\u89c1\u9762\u8bd5\u9898","previous_post_id":2916,"previous_post_title":"\u9762\u8bd5\u5b98\uff1a\u5982\u4f55\u8fdb\u884c JVM \u8c03\u4f18\uff08\u9644\u771f\u5b9e\u6848\u4f8b\uff09","_links":{"self":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/2920","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/comments?post=2920"}],"version-history":[{"count":0,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/posts\/2920\/revisions"}],"wp:attachment":[{"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/media?parent=2920"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/categories?post=2920"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xinchewhd.com.cn\/index.php\/wp-json\/wp\/v2\/tags?post=2920"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}