{"id":2163,"date":"2017-10-10T19:51:29","date_gmt":"2017-10-10T11:51:29","guid":{"rendered":"https:\/\/ai.zhousir.top\/?p=2163"},"modified":"2020-04-15T22:17:08","modified_gmt":"2020-04-15T14:17:08","slug":"java-%e6%8a%80%e6%9c%af%e4%b9%8b%e5%9e%83%e5%9c%be%e5%9b%9e%e6%94%b6%e6%9c%ba%e5%88%b6","status":"publish","type":"post","link":"https:\/\/ai.zhousir.top\/?p=2163","title":{"rendered":"Java \u6280\u672f\u4e4b\u5783\u573e\u56de\u6536\u673a\u5236"},"content":{"rendered":"<p><a href=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2020\/04\/201407311445259040061.jpg\" rel=\"fancybox\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-2804\" src=\"https:\/\/ai.zhousir.top\/wp-content\/uploads\/2020\/04\/201407311445259040061.jpg\" alt=\"20140731144525904006\" width=\"383\" height=\"268\" \/><\/a><br \/>\n\u5783\u573e\u56de\u6536\u673a\u5236\u662f Java \u975e\u5e38\u91cd\u8981\u7684\u7279\u6027\u4e4b\u4e00\uff0c\u4e5f\u662f\u9762\u8bd5\u9898\u7684\u5e38\u5ba2\u3002\u5b83\u8ba9\u5f00\u53d1\u8005\u65e0\u9700\u5173\u6ce8\u7a7a\u95f4\u7684\u521b\u5efa\u548c\u91ca\u653e\uff0c\u800c\u662f\u4ee5\u5b88\u62a4\u8fdb\u7a0b\u7684\u5f62\u5f0f\u5728\u540e\u53f0\u81ea\u52a8\u56de\u6536\u5783\u573e\u3002\u8fd9\u6837\u505a\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u5f00\u53d1\u6548\u7387\uff0c\u66f4\u6539\u5584\u4e86\u5185\u5b58\u7684\u4f7f\u7528\u72b6\u51b5\u3002<\/p>\n<p>\u4eca\u5929\u672c\u6587\u6765\u5bf9\u5783\u573e\u56de\u6536\u673a\u5236\u8fdb\u884c\u8bb2\u89e3\uff0c\u4e3b\u8981\u6d89\u53ca\u4e0b\u9762\u51e0\u4e2a\u95ee\u9898\uff1a<\/p>\n<ul>\n<li>\u4ec0\u4e48\u662f\u5806\u5185\u5b58\uff1f<\/li>\n<li>\u4ec0\u4e48\u662f\u5783\u573e\uff1f<\/li>\n<li>\u6709\u54ea\u4e9b\u65b9\u6cd5\u56de\u6536\u8fd9\u4e9b\u5783\u573e\uff1f<\/li>\n<li>\u4ec0\u4e48\u662f\u5206\u4ee3\u56de\u6536\u673a\u5236\uff1f<\/li>\n<\/ul>\n<h2>\u4ec0\u4e48\u662f Java \u5806\u5185\u5b58<\/h2>\n<p>\u5806\u662f\u5728 JVM \u542f\u52a8\u65f6\u521b\u5efa\u7684\uff0c\u4e3b\u8981\u7528\u6765\u7ef4\u62a4\u8fd0\u884c\u65f6\u6570\u636e\uff0c\u5982\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u521b\u5efa\u7684\u5bf9\u8c61\u548c\u6570\u7ec4\u90fd\u662f\u57fa\u4e8e\u8fd9\u5757\u5185\u5b58\u7a7a\u95f4\u3002Java \u5806\u662f\u975e\u5e38\u91cd\u8981\u7684\u5143\u7d20\uff0c\u5982\u679c\u6211\u4eec\u52a8\u6001\u521b\u5efa\u7684\u5bf9\u8c61\u6ca1\u6709\u5f97\u5230\u53ca\u65f6\u56de\u6536\uff0c\u6301\u7eed\u5806\u79ef\uff0c\u6700\u540e\u4f1a\u5bfc\u81f4\u5806\u7a7a\u95f4\u88ab\u5360\u6ee1\uff0c\u5185\u5b58\u6ea2\u51fa\u3002<\/p>\n<p>\u56e0\u6b64\uff0cJava \u63d0\u4f9b\u4e86\u4e00\u79cd\u5783\u573e\u56de\u6536\u673a\u5236\uff0c\u5728\u540e\u53f0\u521b\u5efa\u4e00\u4e2a\u5b88\u62a4\u8fdb\u7a0b\u3002\u8be5\u8fdb\u7a0b\u4f1a\u5728\u5185\u5b58\u7d27\u5f20\u7684\u65f6\u5019\u81ea\u52a8\u8df3\u51fa\u6765\uff0c\u628a\u5806\u7a7a\u95f4\u7684\u5783\u573e\u5168\u90e8\u8fdb\u884c\u56de\u6536\uff0c\u4ece\u800c\u4fdd\u8bc1\u7a0b\u5e8f\u7684\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n<h2>\u90a3\u4ec0\u4e48\u662f\u5783\u573e\u5462\uff1f<\/h2>\n<p>\u6240\u8c13\u201c\u5783\u573e\u201d\uff0c\u5c31\u662f\u6307\u6240\u6709\u4e0d\u518d\u5b58\u6d3b\u7684\u5bf9\u8c61\u3002\u5e38\u89c1\u7684\u5224\u65ad\u662f\u5426\u5b58\u6d3b\u6709\u4e24\u79cd\u65b9\u6cd5\uff1a\u5f15\u7528\u8ba1\u6570\u6cd5\u548c\u53ef\u8fbe\u6027\u5206\u6790\u3002<\/p>\n<h3>\u5f15\u7528\u8ba1\u6570\u6cd5<\/h3>\n<p>\u4e3a\u6bcf\u4e00\u4e2a\u521b\u5efa\u7684\u5bf9\u8c61\u5206\u914d\u4e00\u4e2a\u5f15\u7528\u8ba1\u6570\u5668\uff0c\u7528\u6765\u5b58\u50a8\u8be5\u5bf9\u8c61\u88ab\u5f15\u7528\u7684\u4e2a\u6570\u3002\u5f53\u8be5\u4e2a\u6570\u4e3a\u96f6\uff0c\u610f\u5473\u7740\u6ca1\u6709\u4eba\u518d\u4f7f\u7528\u8fd9\u4e2a\u5bf9\u8c61\uff0c\u53ef\u4ee5\u8ba4\u4e3a\u201c\u5bf9\u8c61\u6b7b\u4ea1\u201d\u3002\u4f46\u662f\uff0c\u8fd9\u79cd\u65b9\u6848\u5b58\u5728\u4e25\u91cd\u7684\u95ee\u9898\uff0c\u5c31\u662f\u65e0\u6cd5\u68c0\u6d4b\u201c\u5faa\u73af\u5f15\u7528\u201d\uff1a\u5f53\u4e24\u4e2a\u5bf9\u8c61\u4e92\u76f8\u5f15\u7528\uff0c\u5373\u65f6\u5b83\u4fe9\u90fd\u4e0d\u88ab\u5916\u754c\u4efb\u4f55\u4e1c\u897f\u5f15\u7528\uff0c\u5b83\u4fe9\u7684\u8ba1\u6570\u90fd\u4e0d\u4e3a\u96f6\uff0c\u56e0\u6b64\u6c38\u8fdc\u4e0d\u4f1a\u88ab\u56de\u6536\u3002\u800c\u5b9e\u9645\u4e0a\u5bf9\u4e8e\u5f00\u53d1\u8005\u800c\u8a00\uff0c\u8fd9\u4e24\u4e2a\u5bf9\u8c61\u5df2\u7ecf\u5b8c\u5168\u6ca1\u6709\u7528\u5904\u4e86\u3002<\/p>\n<p>\u56e0\u6b64\uff0cJava \u91cc\u6ca1\u6709\u91c7\u7528\u8fd9\u6837\u7684\u65b9\u6848\u6765\u5224\u5b9a\u5bf9\u8c61\u7684\u201c\u5b58\u6d3b\u6027\u201d\u3002<\/p>\n<h3>\u53ef\u8fbe\u6027\u5206\u6790<\/h3>\n<p>\u8fd9\u79cd\u65b9\u6848\u662f\u76ee\u524d\u4e3b\u6d41\u8bed\u8a00\u91cc\u91c7\u7528\u7684\u5bf9\u8c61\u5b58\u6d3b\u6027\u5224\u65ad\u65b9\u6848\u3002\u57fa\u672c\u601d\u8def\u662f\u628a\u6240\u6709\u5f15\u7528\u7684\u5bf9\u8c61\u60f3\u8c61\u6210\u4e00\u68f5\u6811\uff0c\u4ece\u6811\u7684\u6839\u7ed3\u70b9 GC Roots \u51fa\u53d1\uff0c\u6301\u7eed\u904d\u5386\u627e\u51fa\u6240\u6709\u8fde\u63a5\u7684\u6811\u679d\u5bf9\u8c61\uff0c\u8fd9\u4e9b\u5bf9\u8c61\u5219\u88ab\u79f0\u4e3a\u201c\u53ef\u8fbe\u201d\u5bf9\u8c61\uff0c\u6216\u79f0\u201c\u5b58\u6d3b\u201d\u5bf9\u8c61\u3002\u5176\u4f59\u7684\u5bf9\u8c61\u5219\u88ab\u89c6\u4e3a\u201c\u6b7b\u4ea1\u201d\u7684\u201c\u4e0d\u53ef\u8fbe\u201d\u5bf9\u8c61\uff0c\u6216\u79f0\u201c\u5783\u573e\u201d\u3002<\/p>\n<p>\u53c2\u8003\u4e0b\u56fe\uff0cobject5,object6 \u548c object7 \u4fbf\u662f\u4e0d\u53ef\u8fbe\u5bf9\u8c61\uff0c\u89c6\u4e3a\u201c\u6b7b\u4ea1\u72b6\u6001\u201d\uff0c\u5e94\u8be5\u88ab\u5783\u573e\u56de\u6536\u5668\u56de\u6536\u3002<\/p>\n<p><a href=\"http:\/\/www.importnew.com\/26821.html\/reachable\" rel=\"attachment wp-att-26822\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-26822\" title=\"reachable\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2017\/10\/de3b5b129b7c7dd9659ef0cc899b8732.jpg\" alt=\"\" \/><\/a><\/p>\n<h3>GC Roots \u7a76\u7adf\u6307\u8c01\u5462\uff1f<\/h3>\n<p>\u6211\u4eec\u53ef\u4ee5\u731c\u6d4b\uff0cGC Roots \u672c\u8eab\u4e00\u5b9a\u662f\u53ef\u8fbe\u7684\uff0c\u8fd9\u6837\u4ece\u5b83\u4eec\u51fa\u53d1\u904d\u5386\u5230\u7684\u5bf9\u8c61\u624d\u80fd\u4fdd\u8bc1\u4e00\u5b9a\u53ef\u8fbe\u3002\u90a3\u4e48\uff0cJava \u91cc\u6709\u54ea\u4e9b\u5bf9\u8c61\u662f\u4e00\u5b9a\u53ef\u8fbe\u5462\uff1f\u4e3b\u8981\u6709\u4ee5\u4e0b\u56db\u79cd\uff1a<\/p>\n<ul>\n<li>\u865a\u62df\u673a\u6808\uff08\u5e27\u6808\u4e2d\u7684\u672c\u5730\u53d8\u91cf\u8868\uff09\u4e2d\u5f15\u7528\u7684\u5bf9\u8c61\u3002<\/li>\n<li>\u65b9\u6cd5\u533a\u4e2d\u9759\u6001\u5c5e\u6027\u5f15\u7528\u7684\u5bf9\u8c61\u3002<\/li>\n<li>\u65b9\u6cd5\u533a\u4e2d\u5e38\u91cf\u5f15\u7528\u7684\u5bf9\u8c61\u3002<\/li>\n<li>\u672c\u5730\u65b9\u6cd5\u6808\u4e2d JNI \u5f15\u7528\u7684\u5bf9\u8c61\u3002<\/li>\n<\/ul>\n<p>\u4e0d\u5c11\u8bfb\u8005\u53ef\u80fd\u5bf9\u8fd9\u4e9b GC Roots \u4f3c\u61c2\u975e\u61c2\uff0c\u8fd9\u6d89\u53ca\u5230 JVM \u672c\u8eab\u7684\u5185\u5b58\u7ed3\u6784\u7b49\u7b49\uff0c\u672a\u6765\u7684\u6587\u7ae0\u4f1a\u518d\u505a\u6df1\u5165\u8bb2\u89e3\u3002\u8fd9\u91cc\u53ea\u8981\u77e5\u9053\u6709\u8fd9\u4e48\u51e0\u79cd\u7c7b\u578b\u7684 GC Roots\uff0c\u6bcf\u6b21\u5783\u573e\u56de\u6536\u5668\u4f1a\u4ece\u8fd9\u4e9b\u6839\u7ed3\u70b9\u5f00\u59cb\u904d\u5386\u5bfb\u627e\u6240\u6709\u53ef\u8fbe\u8282\u70b9\u3002<\/p>\n<h2>\u6709\u54ea\u4e9b\u65b9\u5f0f\u6765\u56de\u6536\u8fd9\u4e9b\u5783\u573e\u5462\uff1f<\/h2>\n<p>\u4e0a\u9762\u5df2\u7ecf\u77e5\u9053\uff0c\u6240\u6709 GC Roots \u4e0d\u53ef\u8fbe\u7684\u5bf9\u8c61\u90fd\u79f0\u4e3a\u5783\u573e\uff0c\u53c2\u8003\u4e0b\u56fe\uff0c\u9ed1\u8272\u7684\u8868\u793a\u5783\u573e\uff0c\u7070\u8272\u8868\u793a\u5b58\u6d3b\u5bf9\u8c61\uff0c\u7eff\u8272\u8868\u793a\u7a7a\u767d\u7a7a\u95f4\u3002<\/p>\n<p><a href=\"http:\/\/www.importnew.com\/26821.html\/garbage\" rel=\"attachment wp-att-26823\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-26823\" title=\"garbage\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2017\/10\/c8087da0f5a4a03f894d06af19b465f7.png\" alt=\"\" \/><\/a><\/p>\n<p>\u90a3\u4e48\uff0c\u6211\u4eec\u5982\u4f55\u6765\u56de\u6536\u8fd9\u4e9b\u5783\u573e\u5462\uff1f<\/p>\n<h3>\u6807\u8bb0\uff0d\u6e05\u7406<\/h3>\n<p>\u7b2c\u4e00\u6b65\uff0c\u6240\u8c13\u201c\u6807\u8bb0\u201d\u5c31\u662f\u5229\u7528\u53ef\u8fbe\u6027\u904d\u5386\u5806\u5185\u5b58\uff0c\u628a\u201c\u5b58\u6d3b\u201d\u5bf9\u8c61\u548c\u201c\u5783\u573e\u201d\u5bf9\u8c61\u8fdb\u884c\u6807\u8bb0\uff0c\u5f97\u5230\u7684\u7ed3\u679c\u5982\u4e0a\u56fe\uff1b<br \/>\n\u7b2c\u4e8c\u6b65\uff0c\u65e2\u7136\u201c\u5783\u573e\u201d\u5df2\u7ecf\u6807\u8bb0\u597d\u4e86\uff0c\u90a3\u6211\u4eec\u518d\u904d\u5386\u4e00\u904d\uff0c\u628a\u6240\u6709\u201c\u5783\u573e\u201d\u5bf9\u8c61\u6240\u5360\u7684\u7a7a\u95f4\u76f4\u63a5 \u6e05\u7a7a \u5373\u53ef\u3002<\/p>\n<p>\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n<p><a href=\"http:\/\/www.importnew.com\/26821.html\/mark-sweep\" rel=\"attachment wp-att-26824\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-26824\" title=\"mark-sweep\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2017\/10\/2ea8dc60e289787d76ba38239b6604e0.png\" alt=\"\" \/><\/a><\/p>\n<p>\u8fd9\u4fbf\u662f \u6807\u8bb0\uff0d\u6e05\u7406 \u65b9\u6848\uff0c\u7b80\u5355\u65b9\u4fbf \uff0c\u4f46\u662f\u5bb9\u6613\u4ea7\u751f \u5185\u5b58\u788e\u7247\u3002<\/p>\n<h3>\u6807\u8bb0\uff0d\u6574\u7406<\/h3>\n<p>\u65e2\u7136\u4e0a\u9762\u7684\u65b9\u6cd5\u4f1a\u4ea7\u751f\u5185\u5b58\u788e\u7247\uff0c\u90a3\u597d\uff0c\u6211\u5728\u6e05\u7406\u7684\u65f6\u5019\uff0c\u628a\u6240\u6709 \u5b58\u6d3b \u5bf9\u8c61\u624e\u5806\u5230\u540c\u4e00\u4e2a\u5730\u65b9\uff0c\u8ba9\u5b83\u4eec\u5f85\u5728\u4e00\u8d77\uff0c\u8fd9\u6837\u5c31\u6ca1\u6709\u5185\u5b58\u788e\u7247\u4e86\u3002<\/p>\n<p>\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n<p><a href=\"http:\/\/www.importnew.com\/26821.html\/mark-compact\" rel=\"attachment wp-att-26825\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-26825\" title=\"mark-compact\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2017\/10\/a4ae0fc76b676e9ab41f7a0a87fb6072.png\" alt=\"\" \/><\/a><\/p>\n<p>\u8fd9\u4e24\u79cd\u65b9\u6848\u9002\u5408 \u5b58\u6d3b\u5bf9\u8c61\u591a\uff0c\u5783\u573e\u5c11 \u7684\u60c5\u51b5\uff0c\u5b83\u53ea\u9700\u8981\u6e05\u7406\u6389\u5c11\u91cf\u7684\u5783\u573e\uff0c\u7136\u540e\u632a\u52a8\u4e0b\u5b58\u6d3b\u5bf9\u8c61\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n<h3>\u590d\u5236<\/h3>\n<p>\u8fd9\u79cd\u65b9\u6cd5\u6bd4\u8f83\u7c97\u66b4\uff0c\u76f4\u63a5\u628a\u5806\u5185\u5b58\u5206\u6210\u4e24\u90e8\u5206\uff0c\u4e00\u6bb5\u65f6\u95f4\u5185\u53ea\u5141\u8bb8\u5728\u5176\u4e2d\u4e00\u5757\u5185\u5b58\u4e0a\u8fdb\u884c\u5206\u914d\uff0c\u5f53\u8fd9\u5757\u5185\u5b58\u88ab\u5206\u914d\u5b8c\u540e\uff0c\u5219\u6267\u884c\u5783\u573e\u56de\u6536\uff0c\u628a\u6240\u6709 \u5b58\u6d3b \u5bf9\u8c61\u5168\u90e8\u590d\u5236\u5230\u53e6\u4e00\u5757\u5185\u5b58\u4e0a\uff0c\u5f53\u524d\u5185\u5b58\u5219\u76f4\u63a5\u5168\u90e8\u6e05\u7a7a\u3002<\/p>\n<p>\u53c2\u8003\u4e0b\u56fe\uff1a<\/p>\n<p><a href=\"http:\/\/www.importnew.com\/26821.html\/copying\" rel=\"attachment wp-att-26826\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-26826\" title=\"copying\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2017\/10\/c3632abfa4c296cb613da3c5554cbf00.png\" alt=\"\" \/><\/a><\/p>\n<p>\u8d77\u521d\u65f6\u53ea\u4f7f\u7528\u4e0a\u9762\u90e8\u5206\u7684\u5185\u5b58\uff0c\u76f4\u5230\u5185\u5b58\u4f7f\u7528\u5b8c\u6bd5\uff0c\u624d\u8fdb\u884c\u5783\u573e\u56de\u6536\uff0c\u628a\u6240\u6709\u5b58\u6d3b\u5bf9\u8c61\u642c\u5230\u4e0b\u534a\u90e8\u5206\uff0c\u5e76\u628a\u4e0a\u534a\u90e8\u5206\u8fdb\u884c\u6e05\u7a7a\u3002<\/p>\n<p>\u8fd9\u79cd\u505a\u6cd5\u4e0d\u5bb9\u6613\u4ea7\u751f\u788e\u7247\uff0c\u4e5f\u7b80\u5355\u7c97\u66b4\uff1b\u4f46\u662f\uff0c\u5b83\u610f\u5473\u7740\u4f60\u5728\u4e00\u6bb5\u65f6\u95f4\u5185\u53ea\u80fd\u4f7f\u7528\u4e00\u90e8\u5206\u7684\u5185\u5b58\uff0c\u8d85\u8fc7\u8fd9\u90e8\u5206\u5185\u5b58\u7684\u8bdd\u5c31\u610f\u5473\u7740\u5806\u5185\u5b58\u91cc\u9891\u7e41\u7684 \u590d\u5236\u6e05\u7a7a\u3002<\/p>\n<p>\u8fd9\u79cd\u65b9\u6848\u9002\u5408 \u5b58\u6d3b\u5bf9\u8c61\u5c11\uff0c\u5783\u573e\u591a \u7684\u60c5\u51b5\uff0c\u8fd9\u6837\u5728\u590d\u5236\u65f6\u5c31\u4e0d\u9700\u8981\u590d\u5236\u591a\u5c11\u5bf9\u8c61\u8fc7\u53bb\uff0c\u591a\u6570\u5783\u573e\u76f4\u63a5\u88ab\u6e05\u7a7a\u5904\u7406\u3002<\/p>\n<h2>Java \u7684\u5206\u4ee3\u56de\u6536\u673a\u5236<\/h2>\n<p>\u4e0a\u9762\u6211\u4eec\u770b\u5230\u6709\u81f3\u5c11\u4e09\u79cd\u65b9\u6cd5\u6765\u56de\u6536\u5185\u5b58\uff0c\u90a3\u4e48 Java \u91cc\u662f\u5982\u4f55\u9009\u62e9\u5229\u7528\u8fd9\u4e09\u79cd\u56de\u6536\u7b97\u6cd5\u5462\uff1f\u662f\u53ea\u7528\u4e00\u79cd\u8fd8\u662f\u4e09\u79cd\u90fd\u7528\u5462\uff1f<\/p>\n<h3>Java \u7684\u5806\u7ed3\u6784<\/h3>\n<p>\u5728\u9009\u62e9\u56de\u6536\u7b97\u6cd5\u524d\uff0c\u6211\u4eec\u5148\u6765\u770b\u4e00\u4e0b Java \u5806\u7684\u7ed3\u6784\u3002<\/p>\n<p>\u4e00\u5757 Java \u5806\u7a7a\u95f4\u4e00\u822c\u5206\u6210\u4e09\u90e8\u5206\uff0c\u8fd9\u4e09\u90e8\u5206\u7528\u6765\u5b58\u50a8\u4e09\u7c7b\u6570\u636e\uff1a<\/p>\n<ul>\n<li>\u521a\u521a\u521b\u5efa\u7684\u5bf9\u8c61\u3002\u5728\u4ee3\u7801\u8fd0\u884c\u65f6\u4f1a\u6301\u7eed\u4e0d\u65ad\u5730\u521b\u9020\u65b0\u7684\u5bf9\u8c61\uff0c\u8fd9\u4e9b\u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u4f1a\u88ab\u7edf\u4e00\u653e\u5728\u4e00\u8d77\u3002\u56e0\u4e3a\u6709\u5f88\u591a\u5c40\u90e8\u53d8\u91cf\u7b49\u5728\u65b0\u521b\u5efa\u540e\u5f88\u5feb\u4f1a\u53d8\u6210 \u4e0d\u53ef\u8fbe \u7684\u5bf9\u8c61\uff0c\u5feb\u901f\u6b7b\u53bb \uff0c\u56e0\u6b64\u8fd9\u5757\u533a\u57df\u7684\u7279\u70b9\u662f \u5b58\u6d3b\u5bf9\u8c61\u5c11\uff0c\u5783\u573e\u591a \u3002\u5f62\u8c61\u70b9\u63cf\u8ff0\u8fd9\u5757\u533a\u57df\u4e3a\uff1a \u65b0\u751f\u4ee3\uff1b<\/li>\n<li>\u5b58\u6d3b\u4e86\u4e00\u6bb5\u65f6\u95f4\u7684\u5bf9\u8c61\u3002\u8fd9\u4e9b\u5bf9\u8c61\u65e9\u65e9\u5c31\u88ab\u521b\u5efa\u4e86\uff0c\u800c\u4e14\u4e00\u76f4\u6d3b\u4e86\u4e0b\u6765\u3002\u6211\u4eec\u628a\u8fd9\u4e9b \u5b58\u6d3b\u65f6\u95f4\u8f83\u957f \u7684\u5bf9\u8c61\u653e\u5728\u4e00\u8d77\uff0c\u5b83\u4eec\u7684\u7279\u70b9\u662f \u5b58\u6d3b\u5bf9\u8c61\u591a\uff0c\u5783\u573e\u5c11 \u3002\u5f62\u8c61\u70b9\u63cf\u8ff0\u8fd9\u5757\u533a\u57df\u4e3a\uff1a \u8001\u5e74\u4ee3\uff1b<\/li>\n<li>\u6c38\u4e45\u5b58\u5728\u7684\u5bf9\u8c61\u3002\u6bd4\u5982\u4e00\u4e9b\u9759\u6001\u6587\u4ef6\uff0c\u8fd9\u4e9b\u5bf9\u8c61\u7684\u7279\u70b9\u662f\u4e0d\u9700\u8981\u5783\u573e\u56de\u6536\uff0c\u6c38\u8fdc\u5b58\u6d3b\u3002\u5f62\u8c61\u70b9\u63cf\u8ff0\u8fd9\u5757\u533a\u57df\u4e3a\uff1a\u6c38\u4e45\u4ee3 \u3002\uff08\u4e0d\u8fc7\u5728 Java 8 \u91cc\u5df2\u7ecf\u628a \u6c38\u4e45\u4ee3 \u5220\u9664\u4e86\uff0c\u628a\u8fd9\u5757\u5185\u5b58\u7a7a\u95f4\u7ed9\u4e86 \u5143\u7a7a\u95f4\uff0c\u540e\u7eed\u6587\u7ae0\u518d\u8bb2\u89e3\u3002\uff09<\/li>\n<\/ul>\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5e38\u89c4\u7684 Java \u5806\u81f3\u5c11\u5305\u62ec\u4e86 \u65b0\u751f\u4ee3 \u548c \u8001\u5e74\u4ee3 \u4e24\u5757\u5185\u5b58\u533a\u57df\uff0c\u800c\u4e14\u8fd9\u4e24\u5757\u533a\u57df\u6709\u5f88\u660e\u663e\u7684\u7279\u5f81\uff1a<\/p>\n<ul>\n<li>\u65b0\u751f\u4ee3\uff1a\u5b58\u6d3b\u5bf9\u8c61\u5c11\u3001\u5783\u573e\u591a<\/li>\n<li>\u8001\u5e74\u4ee3\uff1a\u5b58\u6d3b\u5bf9\u8c61\u591a\u3001\u5783\u573e\u5c11<\/li>\n<\/ul>\n<p>\u7ed3\u5408\u65b0\u751f\u4ee3\uff0f\u8001\u5e74\u4ee3\u7684\u5b58\u6d3b\u5bf9\u8c61\u7279\u70b9\u548c\u4e4b\u524d\u63d0\u8fc7\u7684\u51e0\u79cd\u5783\u573e\u56de\u6536\u7b97\u6cd5\uff0c\u53ef\u4ee5\u5f97\u5230\u5982\u4e0b\u7684\u56de\u6536\u65b9\u6848\uff1a<\/p>\n<h3>\u65b0\u751f\u4ee3\uff0d\u590d\u5236 \u56de\u6536\u673a\u5236<\/h3>\n<p>\u5bf9\u4e8e\u65b0\u751f\u4ee3\u533a\u57df\uff0c\u7531\u4e8e\u6bcf\u6b21 GC \u90fd\u4f1a\u6709\u5927\u91cf\u65b0\u5bf9\u8c61\u6b7b\u53bb\uff0c\u53ea\u6709\u5c11\u91cf\u5b58\u6d3b\u3002\u56e0\u6b64\u91c7\u7528 \u590d\u5236 \u56de\u6536\u7b97\u6cd5\uff0cGC \u65f6\u628a\u5c11\u91cf\u7684\u5b58\u6d3b\u5bf9\u8c61\u590d\u5236\u8fc7\u53bb\u5373\u53ef\u3002<\/p>\n<p>\u90a3\u4e48\u5982\u4f55\u8bbe\u8ba1\u8fd9\u4e2a \u590d\u5236 \u7b97\u6cd5\u6bd4\u8f83\u597d\u5462\uff1f\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\uff1a<\/p>\n<p><strong>\u601d\u8def 1. \u628a\u5185\u5b58\u5747\u5206\u6210 1:1 \u4e24\u7b49\u4efd<\/strong><\/p>\n<p>\u5982\u4e0b\u56fe\u62c6\u5206\u5185\u5b58\u3002<\/p>\n<p><a href=\"http:\/\/www.importnew.com\/26821.html\/young_1\" rel=\"attachment wp-att-26827\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-26827\" title=\"young_1\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2017\/10\/76c19ea7ca7a76617cd2e201030ecb51.png\" alt=\"\" \/><\/a><\/p>\n<p>\u6bcf\u6b21\u53ea\u4f7f\u7528\u4e00\u534a\u7684\u5185\u5b58\uff0c\u5f53\u8fd9\u4e00\u534a\u6ee1\u4e86\u540e\uff0c\u5c31\u8fdb\u884c\u5783\u573e\u56de\u6536\uff0c\u628a\u5b58\u6d3b\u7684\u5bf9\u8c61\u76f4\u63a5\u590d\u5236\u5230\u53e6\u4e00\u534a\u5185\u5b58\uff0c\u5e76\u6e05\u7a7a\u5f53\u524d\u4e00\u534a\u7684\u5185\u5b58\u3002<\/p>\n<p>\u8fd9\u79cd\u5206\u6cd5\u7684\u7f3a\u9677\u662f\u76f8\u5f53\u4e8e\u53ea\u6709\u4e00\u534a\u7684\u53ef\u7528\u5185\u5b58\uff0c\u5bf9\u4e8e\u65b0\u751f\u4ee3\u800c\u8a00\uff0c\u65b0\u5bf9\u8c61\u6301\u7eed\u4e0d\u65ad\u5730\u88ab\u521b\u5efa\uff0c\u5982\u679c\u53ea\u6709\u4e00\u534a\u53ef\u7528\u5185\u5b58\uff0c\u90a3\u663e\u7136\u8981\u6301\u7eed\u4e0d\u65ad\u5730\u8fdb\u884c\u5783\u573e\u56de\u6536\u5de5\u4f5c\uff0c\u53cd\u800c\u5f71\u54cd\u5230\u4e86\u6b63\u5e38\u7a0b\u5e8f\u7684\u8fd0\u884c\uff0c\u5f97\u4e0d\u507f\u5931\u3002<\/p>\n<p><strong>\u601d\u8def 2. \u628a\u5185\u5b58\u6309 9:1 \u5206<\/strong><\/p>\n<p>\u65e2\u7136\u4e0a\u9762\u7684\u5206\u6cd5\u5bfc\u81f4\u53ef\u7528\u5185\u5b58\u53ea\u5269\u4e00\u534a\uff0c\u90a3\u4e48\u6211\u505a\u4e9b\u8c03\u6574\uff0c\u628a 1:1\u53d8\u62109:1\uff0c<\/p>\n<p><a href=\"http:\/\/www.importnew.com\/26821.html\/young_2\" rel=\"attachment wp-att-26828\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-26828\" title=\"young_2\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2017\/10\/200cf9fb83a9142dca4e581274a9b829.png\" alt=\"\" \/><\/a><\/p>\n<p>\u6700\u5f00\u59cb\u5728 9 \u7684\u5185\u5b58\u533a\u4f7f\u7528\uff0c\u5f53 9 \u5feb\u8981\u6ee1\u65f6\uff0c\u6267\u884c\u590d\u5236\u56de\u6536\uff0c\u628a 9 \u5185\u4ecd\u7136\u5b58\u6d3b\u7684\u5bf9\u8c61\u590d\u5236\u5230 1 \u533a\uff0c\u5e76\u6e05\u7a7a 9 \u533a\u3002<\/p>\n<p>\u8fd9\u6837\u770b\u8d77\u6765\u662f\u6bd4\u4e0a\u9762\u7684\u65b9\u6cd5\u597d\u4e86\uff0c\u4f46\u662f\u5b83\u5b58\u5728\u6bd4\u8f83\u4e25\u91cd\u7684\u95ee\u9898\u3002<\/p>\n<p>\u5f53\u6211\u4eec\u628a 9 \u533a\u5b58\u6d3b\u5bf9\u8c61\u590d\u5236\u5230 1 \u533a\u65f6\uff0c\u7531\u4e8e\u5185\u5b58\u7a7a\u95f4\u6bd4\u4f8b\u76f8\u5dee\u6bd4\u8f83\u5927\uff0c\u6240\u4ee5\u5f88\u6709\u53ef\u80fd 1 \u533a\u653e\u4e0d\u6ee1\uff0c\u6b64\u65f6\u5c31\u4e0d\u5f97\u4e0d\u628a\u5bf9\u8c61\u79fb\u5230 \u8001\u5e74\u533a \u3002\u800c\u8fd9\u5c31\u610f\u5473\u7740\uff0c\u53ef\u80fd\u4f1a\u6709\u4e00\u90e8\u5206 \u5e76\u4e0d\u8001 \u7684 9 \u533a\u5bf9\u8c61\u7531\u4e8e 1 \u533a\u653e\u4e0d\u4e0b\u4e86\u800c\u88ab\u653e\u5230\u4e86 \u8001\u5e74\u533a \uff0c\u53ef\u60f3\u800c\u77e5\uff0c\u8fd9\u7834\u574f\u4e86 \u8001\u5e74\u533a \u7684\u89c4\u5219\u3002\u6216\u8005\u8bf4\uff0c\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u7684 \u8001\u5e74\u533a \u5e76\u4e0d\u4e00\u5b9a\u5168\u662f \u8001\u5e74\u5bf9\u8c61\u3002<\/p>\n<p>\u90a3\u5e94\u8be5\u5982\u4f55\u624d\u80fd\u628a\u771f\u6b63\u6bd4\u8f83 \u8001 \u7684\u5bf9\u8c61\u632a\u5230 \u8001\u5e74\u533a \u5462\uff1f<\/p>\n<p><strong>\u601d\u8def 3. \u628a\u5185\u5b58\u6309 8:1:1 \u5206<\/strong><\/p>\n<p><a href=\"http:\/\/www.importnew.com\/26821.html\/young_3\" rel=\"attachment wp-att-26829\"><img decoding=\"async\" class=\"aligncenter size-full wp-image-26829\" title=\"young_3\" src=\"http:\/\/incdn1.b0.upaiyun.com\/2017\/10\/8ca26f58793f6e4b8b0cbaa03d2b4b3b.png\" alt=\"\" \/><\/a><\/p>\n<p>\u65e2\u7136 9:1 \u6709\u53ef\u80fd\u628a\u5e74\u8f7b\u5bf9\u8c61\u653e\u5230 \u8001\u5e74\u533a \uff0c\u90a3\u5c31\u6362\u6210 8:1:1\uff0c\u4f9d\u6b21\u53d6\u540d\u4e3a Eden\u3001Survivor A\u3001Survivor B \u533a\uff0c\u5176\u4e2d Eden \u610f\u4e3a\u4f0a\u7538\u56ed\uff0c\u5f62\u5bb9\u6709\u5f88\u591a\u65b0\u751f\u5bf9\u8c61\u5728\u91cc\u9762\u521b\u5efa\uff1bSurvivor\u533a\u5219\u4e3a\u5e78\u5b58\u8005\uff0c\u5373\u7ecf\u5386 GC \u540e\u4ecd\u7136\u5b58\u6d3b\u4e0b\u6765\u7684\u5bf9\u8c61\u3002<\/p>\n<p>\u5de5\u4f5c\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u9996\u5148\uff0cEden\u533a\u6700\u5927\uff0c\u5bf9\u5916\u63d0\u4f9b\u5806\u5185\u5b58\u3002\u5f53 Eden \u533a\u5feb\u8981\u6ee1\u4e86\uff0c\u5219\u8fdb\u884c Minor GC\uff0c\u628a\u5b58\u6d3b\u5bf9\u8c61\u653e\u5165 Survivor A \u533a\uff0c\u6e05\u7a7a Eden \u533a\uff1b<\/li>\n<li>Eden\u533a\u88ab\u6e05\u7a7a\u540e\uff0c\u7ee7\u7eed\u5bf9\u5916\u63d0\u4f9b\u5806\u5185\u5b58\uff1b<\/li>\n<li>\u5f53 Eden \u533a\u518d\u6b21\u88ab\u586b\u6ee1\uff0c\u6b64\u65f6\u5bf9 Eden \u533a\u548c Survivor A \u533a\u540c\u65f6\u8fdb\u884c Minor GC\uff0c\u628a\u5b58\u6d3b\u5bf9\u8c61\u653e\u5165 Survivor B \u533a\uff0c\u540c\u65f6\u6e05\u7a7a Eden \u533a\u548cSurvivor A \u533a\uff1b<\/li>\n<li>Eden\u533a\u7ee7\u7eed\u5bf9\u5916\u63d0\u4f9b\u5806\u5185\u5b58\uff0c\u5e76\u91cd\u590d\u4e0a\u8ff0\u8fc7\u7a0b\uff0c\u5373\u5728 Eden \u533a\u586b\u6ee1\u540e\uff0c\u628a Eden \u533a\u548c\u67d0\u4e2a Survivor \u533a\u7684\u5b58\u6d3b\u5bf9\u8c61\u653e\u5230\u53e6\u4e00\u4e2a Survivor \u533a\uff1b<\/li>\n<li>\u5f53\u67d0\u4e2a Survivor \u533a\u88ab\u586b\u6ee1\uff0c\u4e14\u4ecd\u6709\u5bf9\u8c61\u672a\u88ab\u590d\u5236\u5b8c\u6bd5\u65f6\uff0c\u6216\u8005\u67d0\u4e9b\u5bf9\u8c61\u5728\u53cd\u590d Survive 15 \u6b21\u5de6\u53f3\u65f6\uff0c\u5219\u628a\u8fd9\u90e8\u5206\u5269\u4f59\u5bf9\u8c61\u653e\u5230Old \u533a\uff1b<\/li>\n<li>\u5f53 Old \u533a\u4e5f\u88ab\u586b\u6ee1\u65f6\uff0c\u8fdb\u884c Major GC\uff0c\u5bf9 Old \u533a\u8fdb\u884c\u5783\u573e\u56de\u6536\u3002<\/li>\n<\/ol>\n<p>[\u6ce8\u610f\uff0c\u5728\u771f\u5b9e\u7684 JVM \u73af\u5883\u91cc\uff0c\u53ef\u4ee5\u901a\u8fc7\u53c2\u6570 SurvivorRatio \u624b\u52a8\u914d\u7f6e Eden \u533a\u548c\u5355\u4e2a Survivor \u533a\u7684\u6bd4\u4f8b\uff0c\u9ed8\u8ba4\u4e3a 8\u3002]<\/p>\n<p>\u90a3\u4e48\uff0c\u6240\u8c13\u7684 Old \u533a\u5783\u573e\u56de\u6536\uff0c\u6216\u79f0Major GC\uff0c\u5e94\u8be5\u5982\u4f55\u6267\u884c\u5462\uff1f<\/p>\n<h3>\u8001\u5e74\u4ee3\uff0d\u6807\u8bb0\u6574\u7406 \u56de\u6536\u673a\u5236<\/h3>\n<p>\u6839\u636e\u4e0a\u9762\u6211\u4eec\u77e5\u9053\uff0c\u8001\u5e74\u4ee3\u4e00\u822c\u5b58\u653e\u7684\u662f\u5b58\u6d3b\u65f6\u95f4\u8f83\u4e45\u7684\u5bf9\u8c61\uff0c\u6240\u4ee5\u6bcf\u4e00\u6b21 GC \u65f6\uff0c\u5b58\u6d3b\u5bf9\u8c61\u6bd4\u8f83\u8f83\u5927\uff0c\u4e5f\u5c31\u662f\u8bf4\u6bcf\u6b21\u53ea\u6709\u5c11\u90e8\u5206\u5bf9\u8c61\u88ab\u56de\u6536\u3002<\/p>\n<p>\u56e0\u6b64\uff0c\u6839\u636e\u4e0d\u540c\u56de\u6536\u673a\u5236\u7684\u7279\u70b9\uff0c\u8fd9\u91cc\u9009\u62e9 \u5b58\u6d3b\u5bf9\u8c61\u591a\uff0c\u5783\u573e\u5c11 \u7684\u6807\u8bb0\u6574\u7406 \u56de\u6536\u673a\u5236\uff0c\u4ec5\u4ec5\u901a\u8fc7\u5c11\u91cf\u5730\u79fb\u52a8\u5bf9\u8c61\u5c31\u80fd\u6e05\u7406\u5783\u573e\uff0c\u800c\u4e14\u4e0d\u5b58\u5728\u5185\u5b58\u788e\u7247\u5316\u3002<\/p>\n<p>\u81f3\u6b64\uff0c\u6211\u4eec\u5df2\u7ecf\u4e86\u89e3\u4e86 Java \u5806\u5185\u5b58\u7684\u5206\u4ee3\u539f\u7406\uff0c\u5e76\u4e86\u89e3\u4e86\u4e0d\u540c\u4ee3\u6839\u636e\u5404\u81ea\u7279\u70b9\u91c7\u7528\u4e86\u4e0d\u540c\u7684\u56de\u6536\u673a\u5236\uff0c\u5373 \u65b0\u751f\u4ee3 \u91c7\u7528 \u56de\u6536 \u673a\u5236\uff0c\u8001\u5e74\u4ee3 \u91c7\u7528 \u6807\u8bb0\u6574\u7406 \u673a\u5236\u3002<\/p>\n<h2>\u5c0f\u7ed3<\/h2>\n<p>\u5783\u573e\u56de\u6536\u662f Java \u975e\u5e38\u91cd\u8981\u7684\u7279\u6027\uff0c\u4e5f\u662f\u9ad8\u7ea7 Java \u5de5\u7a0b\u5e08\u7684\u5fc5\u7ecf\u4e4b\u8def\u3002<\/p>\n<h2>\u53c2\u8003\u6587\u7ae0\uff1a<\/h2>\n<ul>\n<li>\u300a<a class=\"external\" href=\"http:\/\/jayfeng.com\/2016\/03\/11\/%E7%90%86%E8%A7%A3Java%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6%E6%9C%BA%E5%88%B6\/\" target=\"_blank\" rel=\"nofollow\">\u7406\u89e3 Java \u5783\u573e\u56de\u6536\u673a\u5236<\/a>\u300b<\/li>\n<li>\u300a<a class=\"external\" href=\"https:\/\/segmentfault.com\/a\/1190000002579346#articleHeader6\" target=\"_blank\" rel=\"nofollow\">JVM \u7684 \u5de5\u4f5c\u539f\u7406\uff0c\u5c42\u6b21\u7ed3\u6784 \u4ee5\u53ca GC \u5de5\u4f5c\u539f\u7406<\/a>\u300b<\/li>\n<li>\u300a<a class=\"external\" href=\"http:\/\/howiefh.github.io\/2015\/04\/08\/jvm-note-2\/\" target=\"_blank\" rel=\"nofollow\">\u6df1\u5165\u7406\u89e3 Java \u865a\u62df\u673a\u7b14\u8bb0\u4e8c\uff08\u5783\u573e\u6536\u96c6\u5668\u4e0e\u5185\u5b58\u5206\u914d\u7b56\u7565\uff09<\/a>\u300b<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>\u539f\u6587\u51fa\u5904\uff1a <a href=\"http:\/\/wingjay.com\/2017\/05\/24\/Java-%E6%8A%80%E6%9C%AF%E4%B9%8B%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6%E6%9C%BA%E5%88%B6\/\" target=\"_blank\">wingjay<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5783\u573e\u56de\u6536\u673a\u5236\u662f Java \u975e\u5e38\u91cd\u8981\u7684\u7279\u6027\u4e4b\u4e00\uff0c\u4e5f\u662f\u9762\u8bd5\u9898\u7684\u5e38\u5ba2\u3002\u5b83\u8ba9\u5f00\u53d1\u8005\u65e0\u9700\u5173\u6ce8\u7a7a\u95f4\u7684\u521b\u5efa\u548c\u91ca\u653e\uff0c\u800c\u662f\u4ee5\u5b88\u62a4 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[98],"_links":{"self":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2163"}],"collection":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2163"}],"version-history":[{"count":6,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2163\/revisions"}],"predecessor-version":[{"id":2829,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=\/wp\/v2\/posts\/2163\/revisions\/2829"}],"wp:attachment":[{"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2163"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2163"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ai.zhousir.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}