{"id":10006342,"date":"2022-08-30T12:57:46","date_gmt":"2022-08-30T04:57:46","guid":{"rendered":"https:\/\/ityet.com\/?p=10006342"},"modified":"2022-08-30T12:57:46","modified_gmt":"2022-08-30T04:57:46","slug":"%e6%b7%b1%e5%85%a5%e5%88%86%e6%9e%90jvm%e6%89%a7%e8%a1%8c%e5%bc%95%e6%93%8e","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006342","title":{"rendered":"\u6df1\u5165\u5206\u6790JVM\u6267\u884c\u5f15\u64ce"},"content":{"rendered":"

\u7a0b\u5e8f\u548c\u673a\u5668\u6c9f\u901a\u7684\u6865\u6881<\/p><\/blockquote>\n

\u4e00\u3001\u95f2\u804a<\/h2>\n

\u76f8\u4fe1\u5f88\u591a\u670b\u53cb\u5728\u51fa\u56fd\u65c5\u6e38\uff0c\u6216\u8005\u4e0e\u5916\u56fd\u53cb\u4eba\u6c9f\u901a\u7684\u8fc7\u7a0b\u4e2d\uff0c\u90fd\u4f1a\u9047\u5230\u8bed\u8a00\u4e0d\u901a\u7684\u70e6\u607c\u3002\u8fd9\u65f6\u5019\u6211\u4eec\u5c31\u9700\u8981\u638c\u63e1\u5bf9\u5e94\u7684\u5916\u8bed\u6216\u8005\u62e5\u6709\u4e00\u90e8\u7ffb\u8bd1\u673a\u3002\u800c\u7b14\u8005\u53ea\u4f1a\u4e2d\u6587\uff0c\u6240\u4ee5\u9700\u8981\u501f\u52a9\u4e00\u90e8\u7ffb\u8bd1\u5668\u624d\u80fd\u4e0e\u4e0d\u61c2\u4e2d\u6587\u7684\u5916\u56fd\u53cb\u4eba\u4ea4\u6d41\u3002\u54b1\u4eec\u7684\u6267\u884c\u5f15\u64ce\u5c31\u7c7b\u4f3c\u4e8e\u8fd9\u90e8\u201c\u7ffb\u8bd1\u673a\u201d\u3002<\/p>\n

\u4e8c\u3001\u6982\u8ff0<\/h2>\n

\u6267\u884c\u5f15\u64ce\u7684\u4f5c\u7528\u5c31\u662f\u5c06\u5b57\u8282\u7801\u6307\u4ee4\u89e3\u91ca\u6216\u8005\u7f16\u8bd1\u4e3a\u5bf9\u5e94\u5e73\u53f0\u4e0a\u7684\u672c\u5730\u673a\u5668\u6307\u4ee4\u3002\u7b80\u5355\u6765\u8bf4\uff0c\u6267\u884c\u5f15\u64ce\u5145\u5f53\u4e86\u5c06\u9ad8\u7ea7\u8bed\u8a00\u7ffb\u8bd1\u4e3a\u673a\u5668\u8bed\u8a00\u7684\u7ffb\u8bd1\u8005\u3002\u5bf9\u4e8eHotspot\u865a\u62df\u673a\uff0c\u6267\u884c\u5f15\u64ce\u4e2d\u5305\u542b\u4e24\u90e8\u5206\uff1a\u89e3\u91ca\u5668\u548cJIT\u7f16\u8bd1\u5668\uff08\u5373\u65f6\u7f16\u8bd1\u5668\uff09\u3002\u4e0b\u56fe\u662f\u6267\u884c\u5f15\u64ce\u7684\u539f\u7406\uff1a
\"\"<\/p>\n

\u4e09\u3001\u89e3\u91ca\u5668<\/h2>\n

\u89e3\u91ca\u5668\u6240\u627f\u62c5\u7684\u89d2\u8272\u5c31\u662f\u4e00\u4e2a\u8fd0\u884c\u65f6\u7ffb\u8bd1\u8005<\/code>\uff0c\u5c06\u5b57\u8282\u7801\u6587\u4ef6\u4e2d\u7684\u5185\u5bb9\u7ffb\u8bd1<\/code>\u4e3a\u5bf9\u5e94\u5e73\u53f0\u7684\u672c\u5730\u673a\u5668\u7801\u6307\u4ee4\u3002\u5f53\u4e00\u6761\u5b57\u8282\u7801\u6307\u4ee4\u88ab\u89e3\u91ca\u6267\u884c\u540e\uff0c\u63a5\u7740\u518d\u6839\u636epc\u5bc4\u5b58\u5668\u4e2d\u8bb0\u5f55\u7684\u4e0b\u4e00\u6761\u9700\u8981\u88ab\u6267\u884c\u7684\u5b57\u8282\u7801\u6307\u4ee4\u6267\u884c\u89e3\u91ca\u64cd\u4f5c\u3002JVM\u89e3\u91ca\u5668\u4e00\u5171\u6709\u4e24\u5957\uff0c\u4e00\u5957\u662f\u8fdc\u53e4\u7684\u5b57\u8282\u7801\u89e3\u91ca\u5668<\/code>\uff0c\u53e6\u4e00\u5957\u662f\u73b0\u5728\u666e\u904d\u4f7f\u7528\u7684\u6a21\u677f\u89e3\u91ca\u5668<\/code>\u3002<\/p>\n

1\u3001\u5b57\u8282\u7801\u89e3\u91ca\u5668<\/h3>\n

\u5b57\u8282\u7801\u89e3\u91ca\u5668\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u901a\u8fc7\u7eaf\u8f6f\u4ef6\u4ee3\u7801<\/code>\u6a21\u62df\u5b57\u8282\u7801\u6267\u884c\uff0c\u6548\u7387\u975e\u5e38\u4f4e\u3002<\/p>\n

2\u3001\u6a21\u677f\u89e3\u91ca\u5668<\/h3>\n

\u6a21\u677f\u89e3\u91ca\u5668\u5c06\u6bcf\u4e00\u6761\u5b57\u8282\u7801\u548c\u4e00\u4e2a\u6a21\u677f\u51fd\u6570\u5173\u8054<\/code>\uff0c\u6a21\u677f\u51fd\u6570\u4e2d\u76f4\u63a5\u4ea7\u751f\u8fd9\u6761\u5b57\u8282\u7801\u6307\u4ee4\u6267\u884c\u65f6\u7684\u673a\u5668\u7801\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u89e3\u91ca\u5668\u7684\u6027\u80fd\u3002\u5728\u5e38\u7528\u7684HotSpot VM\u4e2d\uff0c\u89e3\u91ca\u5668\u4e3b\u8981\u7531Interpreter\u6a21\u677f\u548ccode\u6a21\u5757\u6784\u6210\u3002Interpreter\u6a21\u677f\uff1a\u5b9e\u73b0\u4e86\u89e3\u91ca\u5668\u7684\u6838\u5fc3\u529f\u80fd\u3002code\u6a21\u5757\uff1a\u7528\u4e8e\u7ba1\u7406HotSpot VM\u5728\u8fd0\u884c\u65f6\u751f\u6210\u7684\u672c\u5730\u673a\u5668\u7801\u6307\u4ee4\u3002<\/p>\n

\u56db\u3001\u5373\u65f6\u7f16\u8bd1\u5668\uff08JIT\u7f16\u8bd1\u5668\uff09<\/h2>\n

\u5373\u65f6\u7f16\u8bd1\u5668\u7684\u76ee\u7684\u662f\u907f\u514d\u51fd\u6570\u88ab\u89e3\u91ca\u6267\u884c\uff0c\u800c\u662f\u5c06\u6574\u4e2a\u51fd\u6570\u4f53\u7f16\u8bd1\u6210\u673a\u5668\u7801\u6307\u4ee4\uff0c\u6bcf\u6b21\u51fd\u6570\u6267\u884c\u65f6\uff0c\u53ea\u6267\u884c\u7f16\u8bd1\u540e\u7684\u673a\u5668\u7801\u5373\u53ef\uff0c\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5927\u5927\u7684\u63d0\u9ad8\u6548\u7387\u3002<\/p>\n

1\u3001\u70ed\u70b9\u4ee3\u7801\u53ca\u63a2\u6d4b\u65b9\u5f0f<\/h3>\n

\u5f53\u7136\uff0c\u662f\u5426\u9700\u8981JIT\u7f16\u8bd1\u5668\u5c06\u5b57\u8282\u7801\u76f4\u63a5\u7f16\u8bd1\u6210\u5bf9\u5e94\u5e73\u53f0\u7684\u673a\u5668\u7801\uff0c\u9700\u8981\u6839\u636e\u4ee3\u7801\u88ab\u8c03\u7528\u7684\u6267\u884c\u9891\u7387<\/code>\u800c\u5b9a\u3002\u9700\u8981\u88abJIT\u7f16\u8bd1\u5668\u7f16\u8bd1\u6210\u673a\u5668\u7801\u7684\u5b57\u8282\u7801\uff0c\u4e5f\u79f0\u4e3a\u70ed\u70b9\u4ee3\u7801<\/code>\uff0cJIT\u7f16\u8bd1\u5668\u4f1a\u5bf9\u70ed\u70b9\u4ee3\u7801\u505a\u51fa\u6df1\u5ea6\u4f18\u5316<\/code>\uff0c\u5c06\u5176\u4ece\u5b57\u8282\u7801\u7f16\u8bd1\u6210\u673a\u5668\u7801\uff0c\u5e76\u7f13\u5b58\u5230\u65b9\u6cd5\u533a<\/code>\uff0c\u63d0\u9ad8\u4ee3\u7801\u7684\u6267\u884c\u6548\u7387\u3002
JIT\u7f16\u8bd1\u7684\u65b9\u5f0f\u53d1\u751f\u5728\u65b9\u6cd5\u6267\u884c\u8fc7\u7a0b\u4e2d\uff0c\u56e0\u6b64\u4e5f\u88ab\u79f0\u4e4b\u4e3a_\u6808\u4e0a\u66ff\u6362_\uff0c\u6216\u7b80\u79f0OSR(On Stack Replacement)\u7f16\u8bd1\u3002\u901a\u8fc7\u70ed\u70b9\u63a2\u6d4b<\/code>\u7684\u65b9\u6cd5\uff0c\u5224\u65ad\u4e00\u4e2a\u65b9\u6cd5\u88ab\u8c03\u7528\u591a\u5c11\u6b21\uff0c\u6216\u5faa\u73af\u4f53\u6267\u884c\u591a\u5c11\u6b21\u624d\u53ef\u4ee5\u8fbe\u5230\u9608\u503c\uff0c\u8fdb\u884c\u7f16\u8bd1\u3002\u800cHotspot VM\u70ed\u70b9\u63a2\u6d4b\u7684\u65b9\u5f0f\u662f\u57fa\u4e8e\u8ba1\u6570\u5668\u5b9e\u73b0\u7684\u3002\u8fd9\u79cd\u57fa\u4e8e\u6280\u672f\u7684\u70ed\u70b9\u63a2\u6d4b\u65b9\u5f0f\u53c8\u5206\u4e3a\u4e24\u79cd\uff1a1.\u65b9\u6cd5\u8c03\u7528\u8ba1\u6570\u5668 2.\u56de\u8fb9\u8ba1\u6570\u5668<\/p>\n

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1.1\u65b9\u6cd5\u8c03\u7528\u8ba1\u6570\u5668<\/h4>\n

\u65b9\u6cd5\u8c03\u7528\u8ba1\u6570\u5668\u7528\u4e8e\u7edf\u8ba1\u65b9\u6cd5\u8c03\u7528\u6b21\u6570\uff0c\u5b83\u7684\u9ed8\u8ba4\u9608\u503c\u662fclient\u6a21\u5f0f\u4e0b\u662f1500\u6b21\uff0c\u5728server\u6a21\u5f0f\u4e0b\u662f10000\u6b21\u3002\u8d85\u8fc7\u8fd9\u4e2a\u9608\u503c\uff0c\u5c31\u4f1a\u89e6\u53d1JIT\u7f16\u8bd1\u3002\u5f53\u7136\uff0c\u8fd9\u4e2a\u9608\u503c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u4fee\u6539\u865a\u62df\u673a\u53c2\u6570-XX:CompileThreshold<\/code>\u6765\u624b\u52a8\u6307\u5b9a\u3002
\u5f53\u4e00\u4e2a\u65b9\u6cd5\u88ab\u8c03\u7528\u7684\u65f6\u5019\uff0c\u4f1a\u4f18\u5148\u68c0\u67e5\u8be5\u65b9\u6cd5\u662f\u5426\u88abJIT\u7f16\u8bd1\u8fc7\uff0c\u5982\u679c\u5b58\u5728\uff0c\u5219\u4f18\u5148\u4f7f\u7528\u7f16\u8bd1\u8fc7\u7684\u672c\u5730\u4ee3\u7801\u6765\u6267\u884c\uff0c\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u5219\u5c06\u6b64\u65b9\u6cd5\u7684\u8c03\u7528\u8ba1\u6570\u5668\u52a0\u4e00\uff0c\u7136\u540e\u518d\u5224\u65ad\u8ba1\u6570\u5668\u7684\u503c\u662f\u5426\u8d85\u8fc7\u914d\u7f6e\u7684\u9608\u503c\u3002\u5982\u679c\u5df2\u7ecf\u8d85\u8fc7\u4e86\uff0c\u5c31\u4f1a\u5411JIT\u7f16\u8bd1\u5668\u63d0\u4ea4\u4e00\u4e2a\u8be5\u65b9\u6cd5\u7684\u7f16\u8bd1\u8bf7\u6c42\u3002\u4e0b\u9762\u662f\u65b9\u6cd5\u8c03\u7528\u8ba1\u6570\u5668\u6267\u884c\u7684\u6d41\u7a0b\u56fe\uff1a
\"\"
\u5173\u4e8e\u65b9\u6cd5\u8c03\u7528\u8ba1\u6570\u5668\uff0c\u5982\u679c\u4e0d\u505a\u4efb\u4f55\u8bbe\u7f6e\uff0c\u65b9\u6cd5\u8c03\u7528\u8ba1\u6570\u5668\u7edf\u8ba1\u7684\u5e76\u4e0d\u662f\u65b9\u6cd5\u88ab\u8c03\u7528\u7684\u7edd\u5bf9\u6b21\u6570\uff0c\u800c\u662f\u4e00\u4e2a\u76f8\u5bf9\u6267\u884c\u7684\u9891\u7387\u3002\u5f53\u8d85\u8fc7\u4e00\u5b9a\u7684\u65f6\u95f4\u9650\u5ea6\uff0c\u5982\u679c\u65b9\u6cd5\u7684\u8c03\u7528\u6b21\u6570\u4ecd\u7136\u8fbe\u4e0d\u5230\u9608\u503c\uff0c\u90a3\u8fd9\u4e2a\u65b9\u6cd5\u7684\u8c03\u7528\u8ba1\u6570\u5668\u5c31\u4f1a\u88ab\u51cf\u5c11\u4e00\u534a\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u79f0\u4e3a\u65b9\u6cd5\u8c03\u7528\u8ba1\u6570\u5668\u7684\u70ed\u5ea6\u8870\u51cf<\/code>\uff0c\u800c\u8fd9\u6bb5\u65f6\u95f4\u88ab\u79f0\u4f5c\u4e3a\u8be5\u65b9\u6cd5\u7684\u534a\u8870\u5468\u671f<\/code>\u3002
\u8fdb\u884c\u70ed\u5ea6\u8870\u51cf\u7684\u8fc7\u7a0b\u662f\u865a\u62df\u673a\u8fdb\u884c\u5783\u573e\u56de\u6536\u7684\u65f6\u5019\u987a\u4fbf\u8fdb\u884c\u7684\uff0c\u4e3e\u624b\u4e4b\u52b3\u800c\u5df2\u3002\u53ef\u4ee5\u4f7f\u7528\u865a\u62df\u673a\u53c2\u6570-XX:-UseCounterDecay<\/code>\u6765\u5173\u95ed\u70ed\u5ea6\u8870\u51cf\u3002\u8fd9\u6837\u7684\u8bdd\uff0c\u53ea\u8981\u8fd0\u884c\u65f6\u95f4\u8db3\u591f\u957f\uff0c\u7edd\u5927\u90e8\u5206\u65b9\u6cd5\u90fd\u4f1a\u88ab\u7f16\u8bd1\u6210\u672c\u5730\u4ee3\u7801\u3002\u6700\u540e\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528-XX:CounterHalfLifeTime<\/code>\u53c2\u6570\u8bbe\u7f6e\u534a\u8870\u5468\u671f\u7684\u65f6\u95f4\uff0c\u5355\u4f4d\u4e3a\u79d2\u3002<\/p>\n

1.2\u56de\u8fb9\u8ba1\u6570\u5668<\/h4>\n

\u5b83\u7684\u4f5c\u7528\u662f\u7edf\u8ba1\u4e00\u4e2a\u65b9\u6cd5\u4e2d\u5faa\u73af\u4f53\u4ee3\u7801\u6267\u884c\u6b21\u6570<\/code>\uff0c\u5728\u5b57\u8282\u7801\u4e2d\u9047\u5230\u63a7\u5236\u6d41\u5411\u540e\uff0c\u8df3\u8f6c\u7684\u6307\u4ee4\u79f0\u4e3a\u201c\u56de\u8fb9\u201d\u3002\u663e\u7136\uff0c\u5efa\u7acb\u56de\u8fb9\u8ba1\u6570\u5668\u7edf\u8ba1\u7684\u76ee\u7684\u662f\u4e3a\u4e86\u89e6\u53d1OSR\u7f16\u8bd1\u3002\u4e0b\u9762\u662f\u56de\u8fb9\u8ba1\u6570\u5668\u6267\u884c\u7684\u6d41\u7a0b\u56fe\uff1a<\/p>\n

\u5173\u4e8eOSR\u7f16\u8bd1\u4e0a\u6587\u4e2d\u6709\u63d0\u5230<\/p><\/blockquote>\n

\"\"<\/p>\n

2\u3001\u5373\u65f6\u7f16\u8bd1\u5668\u5206\u7c7b<\/h3>\n

\u5728Hotspot VM\u4e2d\uff0c\u5185\u5d4c\u6709\u4e24\u4e2aJIT\u7f16\u8bd1\u5668\uff0c\u5206\u522b\u4e3aclient compiler\u548cserver compiler\uff0c\u4f46\u662f\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u6211\u4eec\u7b80\u79f0C1\u7f16\u8bd1\u5668\u548cC2\u7f16\u8bd1\u5668\u3002\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u663e\u793a\u7684\u6307\u5b9aJVM\u5728\u8fd0\u884c\u65f6\u5230\u5e95\u4f7f\u7528\u54ea\u79cdJIT\u7f16\u8bd1\u5668\u3002<\/p>\n

2.1 c1\u7f16\u8bd1\u5668<\/h4>\n

\u6307\u5b9aJava\u865a\u62df\u673a\u8fd0\u884c\u5728client\u6a21\u5f0f\u4e0b\uff0c\u4f7f\u7528C1\u7f16\u8bd1\u5668\u3002C1\u7f16\u8bd1\u5668\u4f1a\u5bf9\u5b57\u8282\u7801\u8fdb\u884c\u7b80\u5355\u548c\u53ef\u9760\u7684\u4f18\u5316\uff0c\u8017\u65f6\u77ed\u3002\u4ee5\u8fbe\u5230\u66f4\u5feb\u7684\u7f16\u8bd1\u901f\u5ea6\uff0c\u4f46\u662f\u7f16\u8bd1\u540e\u7684\u4ee3\u7801\u6267\u884c\u901f\u5ea6\u76f8\u5bf9\u6162\u3002C1\u7f16\u8bd1\u5668\u4e3b\u8981\u6709\u65b9\u6cd5\u5185\u8054\uff0c\u53bb\u865a\u62df\u5316\uff0c\u5197\u4f59\u6d88\u9664\u3002<\/p>\n

    \n
  1. \u65b9\u6cd5\u5185\u8054\uff1a\u5c06\u5f15\u7528\u7684\u51fd\u6570\u4ee3\u7801\u7f16\u8bd1\u5230\u5f15\u7528\u70b9\u5904\uff0c\u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11\u6808\u5e27\u7684\u751f\u6210\uff0c\u51cf\u5c11\u53c2\u6570\u4f20\u9012\u4ee5\u53ca\u8df3\u8f6c\u8fc7\u7a0b\u3002<\/li>\n
  2. \u53bb\u865a\u62df\u5316\uff1a\u5bf9\u552f\u4e00\u5b9e\u73b0\u7684\u7c7b\u8fdb\u884c\u5185\u8054\u3002<\/li>\n
  3. \u5197\u4f59\u6d88\u9664\uff1a\u5728\u8fd0\u884c\u671f\u95f4\u628a\u4e00\u4e9b\u4e0d\u4f1a\u6267\u884c\u7684\u4ee3\u7801\u53e0\u6389\u3002<\/li>\n<\/ol>\n

    2.2 c2\u7f16\u8bd1\u5668<\/h4>\n

    \u6307\u5b9aJava\u865a\u62df\u673a\u8fd0\u884c\u5728server\u6a21\u5f0f\u4e0b\uff0c\u4f7f\u7528C2\u7f16\u8bd1\u5668\u3002C2\u7f16\u8bd1\u5668\u5bf9\u4ee3\u7801\u4f18\u5316\u65f6\u95f4\u957f\uff0c\u7f16\u8bd1\u65f6\u95f4\u4e5f\u957f\u3002\u4f46\u662f\u7f16\u8bd1\u540e\u7684\u4ee3\u7801\u6267\u884c\u901f\u5ea6\u6bd4\u8f83\u5feb\u3002C2\u7684\u4f18\u5316\u4e3b\u8981\u5728\u5168\u5c40\u5c42\u9762\uff0c\u9003\u9038\u5206\u6790\u5f0f\u4f18\u5316\u7684\u57fa\u7840\u3002\u57fa\u4e8e\u9003\u9038\u5206\u6790\uff0cC2\u4e0a\u6709\u5982\u4e0b\u51e0\u79cd\u4f18\u5316\uff1a<\/p>\n

      \n
    1. \u6807\u91cf\u66ff\u6362\uff1a\u7528\u6807\u91cf\u503c\u4ee3\u66ff\u805a\u5408\u5bf9\u8c61\u7684\u5c5e\u6027\u503c\u3002<\/li>\n
    2. \u6808\u4e0a\u5206\u914d\uff1a\u5bf9\u4e8e\u672a\u9003\u9038\u7684\u5bf9\u8c61\u5206\u914d\u5728\u6808\u4e0a\u800c\u4e0d\u662f\u5806\u4e0a\u3002<\/li>\n
    3. \u540c\u6b65\u6d88\u9664\uff1a\u6e05\u695a\u540c\u6b65\u64cd\u4f5c\uff0c\u901a\u5e38\u6307synchronized\u3002<\/li>\n<\/ol>\n

      2.3 Graal\u7f16\u8bd1\u5668<\/h4>\n

      JDK10\u8d77\uff0c\u5728C1\u7f16\u8bd1\u5668\u548cC2\u7f16\u8bd1\u5668\u4e4b\u540e\uff0cHotSpot VM\u65b0\u589e\u4e86\u4e00\u4e2aGraal\u5373\u65f6\u7f16\u8bd1\u5668\u3002\u7f16\u8bd1\u6548\u679c\u77ed\u77ed\u51e0\u5e74\u7684\u65f6\u95f4\u5c31\u8ffd\u5e73\u4e86C2\u7f16\u8bd1\u5668\u3002\u76ee\u524d\uff0c\u5e26\u7740\u201c\u5b9e\u9a8c\u72b6\u6001\u201d\u6807\u7b7e\uff0c\u9700\u8981\u4f7f\u7528\u5f00\u5173\u53c2\u6570-XX:+UnlockExperimentalVMOptions<\/code>\uff0c-XX:+UseJVMCICompiler<\/code>\u53bb\u6fc0\u6d3b\u8fd9\u4e2a\u7f16\u8bd1\u5668\uff0c\u624d\u80fd\u4f7f\u7528\u3002<\/p>\n

      \u4e94\u3001\u89e3\u91ca\u5668\u548cJIT\u5e76\u5b58<\/h2>\n

      \u4e3a\u4ec0\u4e48\u9700\u8981\u89e3\u91ca\u5668\u548cJIT\u5e76\u5b58\uff0c\u539f\u56e0\u6709\u51e0\u70b9\uff1a<\/p>\n

        \n
      1. \u5f53\u7a0b\u5e8f\u542f\u52a8\u7684\u65f6\u5019\uff0c\u89e3\u91ca\u5668\u53ef\u4ee5\u9a6c\u4e0a\u53d1\u6325\u4f5c\u7528\uff0c\u7701\u53bb\u7f16\u8bd1\u7684\u65f6\u95f4\u3002<\/li>\n
      2. \u7f16\u8bd1\u5668\u60f3\u8981\u6267\u884c\uff0c\u9700\u8981\u628a\u5b57\u8282\u7801\u7f16\u8bd1\u6210\u672c\u5730\u673a\u5668\u7801\uff0c\u5e76\u4e14\u7f13\u5b58\u7f16\u8bd1\u540e\u7684\u673a\u5668\u7801\uff0c\u7f16\u8bd1\u9700\u8981\u4e00\u5b9a\u7684\u65f6\u95f4\u3002<\/li>\n
      3. \u7f16\u8bd1\u540e\u7684\u672c\u5730\u673a\u5668\u7801\uff0c\u6267\u884c\u6548\u7387\u9ad8\u3002\u6240\u4ee5\uff0c\u5728\u4e24\u79cd\u5e76\u5b58\u7684\u6a21\u5f0f\u4e0b\uff0c\u89e3\u91ca\u5668\u9996\u5148\u53d1\u6325\u4f5c\u7528\uff0c\u800c\u4e0d\u5fc5\u7b49\u5230\u5373\u65f6\u7f16\u8bd1\u5668\u5168\u90e8\u7f16\u8bd1\u5b8c\u5728\u6267\u884c\uff0c\u8fd9\u6837\u53ef\u4ee5\u7701\u53bb\u4e0d\u5fc5\u8981\u7684\u7f16\u8bd1\u65f6\u95f4\u3002<\/li>\n
      4. \u968f\u7740\u7a0b\u5e8f\u7ee7\u7eed\u4e0d\u65ad\u8fd0\u884c\uff0c\u7f16\u8bd1\u5668\u53d1\u6325\u4f5c\u7528\uff0c\u6839\u636e\u70ed\u70b9\u63a2\u6d4b<\/code>\u529f\u80fd\uff0c\u628a\u8d8a\u6765\u8d8a\u591a\u7684\u5b57\u8282\u7801\u7f16\u8bd1\u6210\u672c\u5730\u673a\u5668\u7801\uff0c\u83b7\u5f97\u66f4\u9ad8\u7684\u6267\u884c\u6548\u7387\u3002<\/li>\n<\/ol>\n

        \u516d\u3001\u6267\u884c\u5f15\u64ce\u6267\u884c\u7a0b\u5e8f\u7684\u65b9\u5f0f<\/h2>\n

        \u5728\u9ed8\u8ba4\u7684\u60c5\u51b5\u4e0b\uff0cHotSpot VM\u91c7\u7528\u7684\u662f\u89e3\u91ca\u5668\u548cJIT\u7f16\u8bd1\u5668\u5e76\u5b58\u7684\u67b6\u6784\uff0c\u5f53\u7136\u8bfb\u8005\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u7684\u5e94\u7528\u573a\u666f\uff0c\u901a\u8fc7\u865a\u62df\u673a\u53c2\u6570\uff0c\u4e3a\u865a\u62df\u673a\u6307\u5b9a\u5728\u8fd0\u884c\u65f6\u5230\u5e95\u662f\u5b8c\u5168\u91c7\u7528\u89e3\u91ca\u5668\u6267\u884c\uff0c\u8fd8\u662f\u5b8c\u5168\u91c7\u7528\u5373\u65f6\u7f16\u8bd1\u5668\u6267\u884c\u3002<\/p>\n

          \n
        1. -Xint<\/code>\uff1a\u5b8c\u5168\u91c7\u7528\u89e3\u91ca\u5668\u6a21\u5f0f\u6267\u884c\u7a0b\u5e8f<\/li>\n
        2. -XComp<\/code>\uff1a\u5b8c\u5168\u91c7\u7528\u5373\u65f6\u7f16\u8bd1\u5668\u6a21\u5f0f\u6267\u884c\u7a0b\u5e8f\u3002\u5982\u679c\u5373\u65f6\u7f16\u8bd1\u5668\u51fa\u73b0\u95ee\u9898\uff0c\u89e3\u91ca\u5668\u4f1a\u4ecb\u5165\u6267\u884c\uff1b<\/li>\n
        3. -Xmixed<\/code>\uff1a\u91c7\u7528\u89e3\u91ca\u5668+\u5373\u65f6\u7f16\u8bd1\u5668\u7684\u6df7\u5408\u6a21\u5f0f\u5171\u540c\u6267\u884c\u7a0b\u5e8f\uff0cHotStop VM\u9ed8\u8ba4\u5c31\u662f\u8fd9\u4e2a\u6a21\u5f0f\u3002<\/li>\n<\/ol>\n

          \u4e03\u3001\u53c2\u8003\u6e90\u7801<\/h2>\n
          \u7f16\u7a0b\u6587\u6863\uff1a\nhttps:\/\/gitee.com\/cicadasmile\/butte-java-note\n\n\u5e94\u7528\u4ed3\u5e93\uff1a\nhttps:\/\/gitee.com\/cicadasmile\/butte-flyer-parent<\/code><\/pre>\n
          https:\/\/segmentfault.com\/a\/1190000042397518<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
          \u7a0b\u5e8f\u548c\u673a\u5668\u6c9f\u901a\u7684\u6865\u6881 \u4e00\u3001\u95f2\u804a \u76f8\u4fe1\u5f88\u591a\u670b\u53cb\u5728\u51fa\u56fd\u65c5\u6e38\uff0c\u6216\u8005\u4e0e\u5916\u56fd\u53cb\u4eba\u6c9f\u901a\u7684\u8fc7\u7a0b\u4e2d\uff0c\u90fd\u4f1a\u9047\u5230\u8bed\u8a00\u4e0d\u901a\u7684\u70e6\u607c\u3002\u8fd9 […]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006342","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006342","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006342"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006342\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006342"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006342"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006342"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}