{"id":33055,"date":"2025-03-04T11:26:10","date_gmt":"2025-03-04T03:26:10","guid":{"rendered":"https:\/\/www.yunshan.net\/blog\/?p=33055"},"modified":"2025-03-04T11:26:10","modified_gmt":"2025-03-04T03:26:10","slug":"%e5%ba%94%e7%94%a8%e6%95%85%e9%9a%9c%e5%ae%9a%e4%bd%8d%e6%97%b6%e5%a6%82%e4%bd%95%e5%88%86%e6%9e%90%e5%86%85%e5%ad%98%e6%b3%84%e6%bc%8f%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.yunshan.net\/blog\/archives\/33055.html","title":{"rendered":"\u5e94\u7528\u6545\u969c\u5b9a\u4f4d\u65f6\u5982\u4f55\u5206\u6790\u5185\u5b58\u6cc4\u6f0f\uff1f"},"content":{"rendered":"<p style=\"text-align: center;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.yunshan.net\/blog\/wp-content\/uploads\/2025\/03\/BP4bW.jpg\" alt=\"\u5e94\u7528\u6545\u969c\u5b9a\u4f4d\u65f6\u5982\u4f55\u5206\u6790\u5185\u5b58\u6cc4\u6f0f\uff1f\" ><\/p>\n<\/p>\n<hr>\n<p>\u5728\u6570\u5b57\u5316\u8f6c\u578b\u52a0\u901f\u7684\u4eca\u5929\uff0c\u5e94\u7528\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u76f4\u63a5\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u548c\u4e1a\u52a1\u8fde\u7eed\u6027\u3002\u636e\u7edf\u8ba1\uff0c<strong>\u5185\u5b58\u6cc4\u6f0f\u95ee\u9898<\/strong>\u7ea6\u5360\u8f6f\u4ef6\u6545\u969c\u768423%\uff0c\u4e14\u56e0\u5176\u9690\u853d\u6027\u548c\u6e10\u8fdb\u5f0f\u7834\u574f\u7279\u5f81\uff0c\u5e38\u5bfc\u81f4\u670d\u52a1\u6027\u80fd\u9aa4\u964d\u751a\u81f3\u5d29\u6e83\u3002\u5982\u4f55\u5728\u6d77\u91cf\u4ee3\u7801\u4e2d\u5b9a\u4f4d\u8fd9\u7c7b\u201c\u9690\u5f62\u6740\u624b\u201d\uff1f\u672c\u6587\u5c06\u7cfb\u7edf\u62c6\u89e3<strong>\u5185\u5b58\u6cc4\u6f0f\u5206\u6790\u7684\u6838\u5fc3\u903b\u8f91\u4e0e\u5b9e\u6218\u65b9\u6cd5<\/strong>\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u6784\u5efa\u5feb\u901f\u8bca\u65ad\u4e0e\u4fee\u590d\u80fd\u529b\u3002<\/p>\n<hr>\n<h3 id=\"\u4e00-\u5185\u5b58\u6cc4\u6f0f\u7684\u672c\u8d28\u4e0e\u5371\u5bb3\">\u4e00\u3001\u5185\u5b58\u6cc4\u6f0f\u7684\u672c\u8d28\u4e0e\u5371\u5bb3<\/h3>\n<p><strong>\u5185\u5b58\u6cc4\u6f0f\uff08Memory Leak\uff09<\/strong>\u7684\u672c\u8d28\u662f\u7a0b\u5e8f\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u6301\u7eed\u5360\u7528\u4e0d\u518d\u4f7f\u7528\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u5bfc\u81f4\u53ef\u7528\u5185\u5b58\u9010\u6e10\u51cf\u5c11\u3002\u8fd9\u79cd\u73b0\u8c61\u5728Java\u3001.NET\u7b49\u6258\u7ba1\u8bed\u8a00\u4e2d\u5c24\u4e3a\u5e38\u89c1\uff0c\u4f46C\/C++\u7b49\u975e\u6258\u7ba1\u8bed\u8a00\u540c\u6837\u53ef\u80fd\u56e0\u624b\u52a8\u5185\u5b58\u7ba1\u7406\u5931\u8bef\u5f15\u53d1\u6cc4\u6f0f\u3002<\/p>\n<p>\u67d0\u7535\u5546\u5e73\u53f0\u5728\u4fc3\u9500\u6d3b\u52a8\u4e2d\u51fa\u73b0\u9875\u9762\u54cd\u5e94\u5ef6\u8fdf\uff0c\u7ecf\u6392\u67e5\u53d1\u73b0<strong>\u672a\u5173\u95ed\u7684\u6570\u636e\u5e93\u8fde\u63a5\u6c60<\/strong>\u56e0\u5f02\u5e38\u672a\u91ca\u653e\uff0c\u7d2f\u8ba1\u6d88\u8017\u4e8680%\u7684JVM\u5806\u5185\u5b58\u3002\u8fd9\u79cd\u5178\u578b\u7684\u201c\u8d44\u6e90\u672a\u91ca\u653e\u201d\u573a\u666f\uff0c\u6700\u7ec8\u89e6\u53d1\u4e86\u7cfb\u7edf\u7ea7OOM\uff08Out Of Memory\uff09\u9519\u8bef\u3002<\/p>\n<p>\u5185\u5b58\u6cc4\u6f0f\u7684\u56db\u5927\u7279\u5f81\uff1a<\/p>\n<ol>\n<li><strong>\u6e10\u8fdb\u5f0f\u5185\u5b58\u589e\u957f<\/strong>\uff1a\u901a\u8fc7\u76d1\u63a7\u5de5\u5177\u53ef\u89c2\u5bdf\u5230\u5185\u5b58\u5360\u7528\u66f2\u7ebf\u5448\u9636\u68af\u5f0f\u4e0a\u5347\uff1b\n<\/li>\n<li><strong>GC\uff08\u5783\u573e\u56de\u6536\uff09\u6548\u7387\u4e0b\u964d<\/strong>\uff1aFull GC\u9891\u7387\u589e\u52a0\u4f46\u56de\u6536\u6548\u679c\u51cf\u5f31\uff1b\n<\/li>\n<li><strong>\u54cd\u5e94\u65f6\u95f4\u6ce2\u52a8<\/strong>\uff1a\u56e0\u5185\u5b58\u4e0d\u8db3\u5f15\u53d1\u9891\u7e41\u7684\u78c1\u76d8\u4ea4\u6362\uff08Swap\uff09\uff1b\n<\/li>\n<li><strong>\u6700\u7ec8\u5d29\u6e83<\/strong>\uff1a\u5f53\u5185\u5b58\u8017\u5c3d\u65f6\uff0c\u8fdb\u7a0b\u88ab\u64cd\u4f5c\u7cfb\u7edf\u5f3a\u5236\u7ec8\u6b62\u3002\n<\/li>\n<\/ol>\n<hr>\n<h3 id=\"\u4e8c-\u5185\u5b58\u6cc4\u6f0f\u7684\u76d1\u63a7\u4e0e\u521d\u6b65\u5b9a\u4f4d\">\u4e8c\u3001\u5185\u5b58\u6cc4\u6f0f\u7684\u76d1\u63a7\u4e0e\u521d\u6b65\u5b9a\u4f4d<\/h3>\n<h4 id=\"1-\u9009\u62e9\u76d1\u63a7\u5de5\u5177\"><strong>1. \u9009\u62e9\u76d1\u63a7\u5de5\u5177<\/strong><\/h4>\n<ul>\n<li><strong>JVM\u5e94\u7528<\/strong>\uff1a\u4f7f\u7528VisualVM\u3001JConsole\u6216\u5546\u4e1a\u5de5\u5177YourKit\uff0c\u5b9e\u65f6\u76d1\u63a7\u5806\u5185\u5b58\u3001GC\u65e5\u5fd7\u53ca\u7ebf\u7a0b\u72b6\u6001\uff1b\n<\/li>\n<li><strong>Native\u5e94\u7528<\/strong>\uff1aValgrind\u3001Dr. Memory\u7b49\u5de5\u5177\u53ef\u68c0\u6d4b\u975e\u6258\u7ba1\u4ee3\u7801\u7684\u5185\u5b58\u95ee\u9898\uff1b\n<\/li>\n<li><strong>\u4e91\u539f\u751f\u73af\u5883<\/strong>\uff1a<a href=\"https:\/\/www.yunshan.net\/\"   target=\"_blank\" style=\"color:blue\">Prometheus<\/a>+Grafana\u7ec4\u5408\u652f\u6301\u5bb9\u5668\u7ea7\u5185\u5b58\u6307\u6807\u7684\u53ef\u89c6\u5316\u8ffd\u8e2a\u3002\n<\/li>\n<\/ul>\n<h4 id=\"2-\u8bc6\u522b\u5f02\u5e38\u6a21\u5f0f\"><strong>2. \u8bc6\u522b\u5f02\u5e38\u6a21\u5f0f<\/strong><\/h4>\n<p>\u901a\u8fc7\u5185\u5b58\u76d1\u63a7\u56fe\u8868\uff0c\u82e5\u53d1\u73b0\u5806\u5185\u5b58\u5360\u7528<strong>\u5448\u73b0\u201c\u952f\u9f7f\u72b6\u4e0a\u5347\u201d<\/strong>\uff08\u6bcf\u6b21GC\u540e\u6700\u4f4e\u70b9\u6301\u7eed\u62ac\u9ad8\uff09\uff0c\u5373\u53ef\u521d\u6b65\u5224\u5b9a\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u3002\u4f8b\u5982\uff0c\u67d0\u91d1\u878d\u7cfb\u7edf\u5728\u6bcf\u65e5\u5bf9\u8d26\u540e\u5185\u5b58\u672a\u56de\u843d\u81f3\u57fa\u7ebf\u6c34\u5e73\uff0c\u6700\u7ec8\u9501\u5b9a\u4e3a\u7f13\u5b58\u7b56\u7565\u672a\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u3002<\/p>\n<h4 id=\"3-\u6355\u83b7\u5806\u8f6c\u50a8-heap-dump\"><strong>3. \u6355\u83b7\u5806\u8f6c\u50a8\uff08Heap Dump\uff09<\/strong><\/h4>\n<p>\u5728\u5185\u5b58\u5cf0\u503c\u65f6\u751f\u6210\u5806\u8f6c\u50a8\u6587\u4ef6\uff08\u5982\u901a\u8fc7jmap\u547d\u4ee4\u6216JVM\u53c2\u6570<code>-XX:+HeapDumpOnOutOfMemoryError<\/code>\uff09\uff0c\u8fd9\u662f\u5206\u6790\u6cc4\u6f0f\u5bf9\u8c61\u7684\u201c\u9ec4\u91d1\u5feb\u7167\u201d\u3002<\/p>\n<hr>\n<h3 id=\"\u4e09-\u6df1\u5ea6\u5206\u6790-\u4ece\u5806\u8f6c\u50a8\u5230\u6839\u56e0\u5b9a\u4f4d\">\u4e09\u3001\u6df1\u5ea6\u5206\u6790\uff1a\u4ece\u5806\u8f6c\u50a8\u5230\u6839\u56e0\u5b9a\u4f4d<\/h3>\n<h4 id=\"1-\u89e3\u6790\u5806\u8f6c\u50a8\u6587\u4ef6\"><strong>1. \u89e3\u6790\u5806\u8f6c\u50a8\u6587\u4ef6<\/strong><\/h4>\n<p>\u4f7f\u7528<strong>Eclipse MAT\uff08Memory Analyzer Tool\uff09<\/strong>\u6216JProfiler\u6253\u5f00\u5806\u8f6c\u50a8\uff0c\u91cd\u70b9\u5173\u6ce8\uff1a<\/p>\n<ul>\n<li><strong>Dominator Tree<\/strong>\uff1a\u8bc6\u522b\u5360\u7528\u5185\u5b58\u6700\u5927\u7684\u5bf9\u8c61\u53ca\u5f15\u7528\u94fe\uff1b\n<\/li>\n<li><strong>Histogram<\/strong>\uff1a\u7edf\u8ba1\u7c7b\u5b9e\u4f8b\u6570\u91cf\uff0c\u5f02\u5e38\u504f\u9ad8\u7684\u7c7b\u53ef\u80fd\u4e3a\u6cc4\u6f0f\u6e90\uff1b\n<\/li>\n<li><strong>Leak Suspects Report<\/strong>\uff1a\u5de5\u5177\u81ea\u52a8\u751f\u6210\u7684\u6cc4\u6f0f\u5acc\u7591\u5206\u6790\u3002\n<\/li>\n<\/ul>\n<h4 id=\"2-\u8ffd\u8e2a\u5f15\u7528\u94fe-reference-chain\"><strong>2. \u8ffd\u8e2a\u5f15\u7528\u94fe\uff08Reference Chain\uff09<\/strong><\/h4>\n<p>\u5047\u8bbe\u5206\u6790\u53d1\u73b0<code>HashMap$Node<\/code>\u5b9e\u4f8b\u6570\u91cf\u5f02\u5e38\uff0c\u9700\u6cbf\u7740GC Root\uff08\u5982\u9759\u6001\u53d8\u91cf\u3001\u6d3b\u52a8\u7ebf\u7a0b\uff09\u5411\u4e0b\u5c55\u5f00\u5f15\u7528\u8def\u5f84\u3002\u4f8b\u5982\uff0c\u67d0\u793e\u4ea4App\u56e0\u4e8b\u4ef6\u76d1\u542c\u5668\u672a\u6ce8\u9500\uff0c\u5bfc\u81f4\u7528\u6237\u4f1a\u8bdd\u5bf9\u8c61\u65e0\u6cd5\u91ca\u653e\uff0c\u6700\u7ec8\u901a\u8fc7<strong>\u5f31\u5f15\u7528\uff08WeakReference\uff09<\/strong>\u6539\u9020\u89e3\u51b3\u95ee\u9898\u3002<\/p>\n<h4 id=\"3-\u9a8c\u8bc1\u5047\u8bbe\"><strong>3. \u9a8c\u8bc1\u5047\u8bbe<\/strong><\/h4>\n<ul>\n<li><strong>\u4ee3\u7801\u5ba1\u67e5<\/strong>\uff1a\u68c0\u67e5\u53ef\u7591\u5bf9\u8c61\u7684\u521b\u5efa\u4e0e\u91ca\u653e\u903b\u8f91\uff1b\n<\/li>\n<li><strong>\u538b\u529b\u6d4b\u8bd5<\/strong>\uff1a\u5728\u9884\u53d1\u73af\u5883\u6a21\u62df\u9ad8\u5e76\u53d1\u573a\u666f\uff0c\u89c2\u5bdf\u5185\u5b58\u53d8\u5316\uff1b\n<\/li>\n<li><strong>\u589e\u91cf\u4fee\u590d<\/strong>\uff1a\u901a\u8fc7\u7248\u672c\u56de\u6eda\u6216\u7070\u5ea6\u53d1\u5e03\u786e\u8ba4\u4fee\u590d\u6548\u679c\u3002\n<\/li>\n<\/ul>\n<hr>\n<h3 id=\"\u56db-\u5178\u578b\u573a\u666f\u4e0e\u89e3\u51b3\u65b9\u6848\">\u56db\u3001\u5178\u578b\u573a\u666f\u4e0e\u89e3\u51b3\u65b9\u6848<\/h3>\n<h4 id=\"\u573a\u666f1-\u96c6\u5408\u7c7b\u672a\u6e05\u7406\"><strong>\u573a\u666f1\uff1a\u96c6\u5408\u7c7b\u672a\u6e05\u7406<\/strong><\/h4>\n<ul>\n<li><strong>\u6848\u4f8b<\/strong>\uff1a\u7f13\u5b58\u7cfb\u7edf\u4f7f\u7528<code>ConcurrentHashMap<\/code>\u5b58\u50a8\u4e34\u65f6\u6570\u636e\uff0c\u4f46\u672a\u8bbe\u8ba1\u6dd8\u6c70\u673a\u5236\uff1b\n<\/li>\n<li><strong>\u65b9\u6848<\/strong>\uff1a\u6539\u7528LRU\uff08\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\uff09\u7b56\u7565\u6216Guava Cache\u7684\u8fc7\u671f\u914d\u7f6e\u3002\n<\/li>\n<\/ul>\n<h4 id=\"\u573a\u666f2-\u7ebf\u7a0b\u5c40\u90e8\u53d8\u91cf\u7d2f\u79ef\"><strong>\u573a\u666f2\uff1a\u7ebf\u7a0b\u5c40\u90e8\u53d8\u91cf\u7d2f\u79ef<\/strong><\/h4>\n<ul>\n<li><strong>\u6848\u4f8b<\/strong>\uff1a\u7ebf\u7a0b\u6c60\u4e2d\u590d\u7528\u7ebf\u7a0b\u65f6\uff0cThreadLocal\u53d8\u91cf\u672a\u8c03\u7528<code>remove()<\/code>\u65b9\u6cd5\uff1b\n<\/li>\n<li><strong>\u65b9\u6848<\/strong>\uff1a\u5728<code>finally<\/code>\u4ee3\u7801\u5757\u4e2d\u5f3a\u5236\u6e05\u7406\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u3002\n<\/li>\n<\/ul>\n<h4 id=\"\u573a\u666f3-\u7b2c\u4e09\u65b9\u5e93\u517c\u5bb9\u6027\u95ee\u9898\"><strong>\u573a\u666f3\uff1a\u7b2c\u4e09\u65b9\u5e93\u517c\u5bb9\u6027\u95ee\u9898<\/strong><\/h4>\n<ul>\n<li><strong>\u6848\u4f8b<\/strong>\uff1a\u67d0\u6846\u67b6\u7684\u5f02\u6b65\u4efb\u52a1\u56de\u8c03\u6301\u6709\u5916\u90e8\u7c7b\u5f15\u7528\uff0c\u963b\u788dGC\u56de\u6536\uff1b\n<\/li>\n<li><strong>\u65b9\u6848<\/strong>\uff1a\u4f7f\u7528\u9759\u6001\u5185\u90e8\u7c7b\u6216\u663e\u5f0f\u7f6e\u7a7a\uff08<code>null<\/code>\uff09\u89e3\u9664\u5f3a\u5f15\u7528\u3002\n<\/li>\n<\/ul>\n<hr>\n<h3 id=\"\u4e94-\u9632\u5fa1\u6027\u7f16\u7a0b\u4e0e\u957f\u6548\u9632\u63a7\">\u4e94\u3001\u9632\u5fa1\u6027\u7f16\u7a0b\u4e0e\u957f\u6548\u9632\u63a7<\/h3>\n<ol>\n<li><strong>\u4ee3\u7801\u89c4\u8303<\/strong>\uff1a\u5bf9\u8d44\u6e90\u7533\u8bf7\uff08\u5982\u8fde\u63a5\u3001\u6d41\uff09\u91c7\u7528<code>try-with-resources<\/code>\u6a21\u5f0f\uff1b\n<\/li>\n<li><strong>\u81ea\u52a8\u5316\u68c0\u6d4b<\/strong>\uff1a\u96c6\u6210SonarQube\u3001FindBugs\u7b49\u5de5\u5177\u626b\u63cf\u6f5c\u5728\u6cc4\u6f0f\u98ce\u9669\uff1b\n<\/li>\n<li><strong>\u76d1\u63a7\u544a\u8b66<\/strong>\uff1a\u8bbe\u7f6e\u5185\u5b58\u4f7f\u7528\u7387\u9608\u503c\uff08\u5982JVM\u5806\u768485%\uff09\uff0c\u89e6\u53d1\u5b9e\u65f6\u9884\u8b66\uff1b\n<\/li>\n<li><strong>\u6df7\u6c8c\u5de5\u7a0b<\/strong>\uff1a\u901a\u8fc7\u6545\u969c\u6ce8\u5165\u6d4b\u8bd5\u7cfb\u7edf\u5728\u5185\u5b58\u538b\u529b\u4e0b\u7684\u81ea\u6108\u80fd\u529b\u3002\n<\/li>\n<\/ol>\n<hr>\n<h3 id=\"\u516d-\u5de5\u5177\u94fe\u4e0e\u65b0\u6280\u672f\u8d8b\u52bf\">\u516d\u3001\u5de5\u5177\u94fe\u4e0e\u65b0\u6280\u672f\u8d8b\u52bf<\/h3>\n<ul>\n<li><strong>\u6301\u7eed\u5256\u6790\uff08Continuous Profiling\uff09<\/strong>\uff1aPyroscope\u7b49\u5de5\u5177\u652f\u6301\u751f\u4ea7\u73af\u5883\u4f4e\u5f00\u9500\u7684\u5185\u5b58\u753b\u50cf\uff1b\n<\/li>\n<li><strong>AI\u8f85\u52a9\u5206\u6790<\/strong>\uff1a\u5982Uber\u7684Horovod\u6846\u67b6\u53ef\u901a\u8fc7\u673a\u5668\u5b66\u4e60\u9884\u6d4b\u5185\u5b58\u6cc4\u6f0f\u6a21\u5f0f\uff1b\n<\/li>\n<li><strong>\u4e91\u539f\u751f\u8bca\u65ad<\/strong>\uff1aKubernetes\u751f\u6001\u4e0b\u7684KubeArmor\u3001Inspektor Gadget\u63d0\u4f9b\u5bb9\u5668\u7ea7\u5185\u5b58\u76d1\u63a7\u3002\n<\/li>\n<\/ul>\n<hr>\n<p>\u901a\u8fc7\u4e0a\u8ff0\u65b9\u6cd5\u8bba\u4e0e\u5de5\u5177\u914d\u5408\uff0c\u5f00\u53d1\u8005\u53ef\u5c06\u5185\u5b58\u6cc4\u6f0f\u5206\u6790\u4ece\u201c\u88ab\u52a8\u6551\u706b\u201d\u5347\u7ea7\u4e3a\u201c\u4e3b\u52a8\u9632\u5fa1\u201d\u3002\u7279\u522b\u662f\u5728\u5fae\u670d\u52a1\u67b6\u6784\u4e0b\uff0c<strong>\u5efa\u7acb\u5168\u94fe\u8def\u5185\u5b58\u76d1\u63a7\u4f53\u7cfb<\/strong>\u5df2\u6210\u4e3a\u4fdd\u969c\u5e94\u7528\u97e7\u6027\u7684\u5173\u952e\u5b9e\u8df5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728\u6570\u5b57\u5316\u8f6c\u578b\u52a0\u901f\u7684\u4eca\u5929\uff0c\u5e94\u7528\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u76f4\u63a5\u5f71\u54cd\u7528\u6237\u4f53\u9a8c\u548c\u4e1a\u52a1\u8fde\u7eed\u6027\u3002\u636e\u7edf\u8ba1\uff0c\u5185\u5b58\u6cc4\u6f0f\u95ee\u9898\u7ea6\u5360\u8f6f\u4ef6\u6545\u969c\u768423%\uff0c\u4e14\u56e0\u5176\u9690\u853d\u6027\u548c\u6e10\u8fdb\u5f0f\u7834\u574f\u7279\u5f81\uff0c\u5e38\u5bfc\u81f4\u670d\u52a1\u6027\u80fd\u9aa4\u964d\u751a\u81f3\u5d29\u6e83\u3002\u5982\u4f55\u5728\u6d77\u91cf\u4ee3\u7801\u4e2d\u5b9a\u4f4d\u8fd9\u7c7b\u201c\u9690\u5f62\u6740\u624b\u201d\uff1f\u672c\u6587\u5c06\u7cfb\u7edf\u62c6\u89e3\u5185\u5b58\u6cc4\u6f0f\u5206\u6790\u7684\u6838\u5fc3\u903b\u8f91\u4e0e\u5b9e\u6218\u65b9\u6cd5\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u6784\u5efa\u5feb\u901f\u8bca\u65ad\u4e0e\u4fee\u590d\u80fd\u529b\u3002 \u4e00\u3001\u5185\u5b58\u6cc4\u6f0f\u7684\u672c\u8d28\u4e0e\u5371\u5bb3 \u5185\u5b58\u6cc4\u6f0f\uff08Memory Leak\uff09\u7684\u672c\u8d28\u662f\u7a0b\u5e8f\u5728\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u6301\u7eed\u5360\u7528\u4e0d\u518d\u4f7f\u7528\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u5bfc\u81f4\u53ef\u7528\u5185\u5b58\u9010\u6e10\u51cf\u5c11\u3002\u8fd9\u79cd\u73b0\u8c61\u5728Java\u3001.NET\u7b49\u6258\u7ba1\u8bed\u8a00\u4e2d\u5c24\u4e3a\u5e38\u89c1\uff0c\u4f46C\/C++\u7b49\u975e\u6258\u7ba1\u8bed\u8a00\u540c\u6837\u53ef\u80fd\u56e0\u624b\u52a8\u5185\u5b58\u7ba1\u7406\u5931\u8bef\u5f15\u53d1\u6cc4\u6f0f\u3002 \u67d0\u7535\u5546\u5e73\u53f0\u5728\u4fc3\u9500\u6d3b\u52a8\u4e2d\u51fa\u73b0\u9875\u9762\u54cd\u5e94\u5ef6\u8fdf\uff0c\u7ecf\u6392\u67e5\u53d1\u73b0\u672a\u5173\u95ed\u7684\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u56e0\u5f02\u5e38\u672a\u91ca\u653e\uff0c\u7d2f\u8ba1\u6d88\u8017\u4e8680%\u7684JVM\u5806\u5185\u5b58\u3002\u8fd9\u79cd\u5178\u578b\u7684\u201c\u8d44\u6e90\u672a\u91ca\u653e\u201d\u573a\u666f\uff0c\u6700\u7ec8\u89e6\u53d1\u4e86\u7cfb\u7edf\u7ea7OOM\uff08Out Of Memory\uff09\u9519\u8bef\u3002 \u5185\u5b58\u6cc4\u6f0f\u7684\u56db\u5927\u7279\u5f81\uff1a \u6e10\u8fdb\u5f0f\u5185\u5b58\u589e\u957f\uff1a\u901a\u8fc7\u76d1\u63a7\u5de5\u5177\u53ef\u89c2\u5bdf\u5230\u5185\u5b58\u5360\u7528\u66f2\u7ebf\u5448\u9636\u68af\u5f0f\u4e0a\u5347\uff1b GC\uff08\u5783\u573e\u56de\u6536\uff09\u6548\u7387\u4e0b\u964d\uff1aFull GC\u9891\u7387\u589e\u52a0\u4f46\u56de\u6536\u6548\u679c\u51cf\u5f31\uff1b \u54cd\u5e94\u65f6\u95f4\u6ce2\u52a8\uff1a\u56e0\u5185\u5b58\u4e0d\u8db3\u5f15\u53d1\u9891\u7e41\u7684\u78c1\u76d8\u4ea4\u6362\uff08Swap\uff09\uff1b \u6700\u7ec8\u5d29\u6e83\uff1a\u5f53\u5185\u5b58\u8017\u5c3d\u65f6\uff0c\u8fdb\u7a0b\u88ab\u64cd\u4f5c\u7cfb\u7edf\u5f3a\u5236\u7ec8\u6b62\u3002 \u4e8c\u3001\u5185\u5b58\u6cc4\u6f0f\u7684\u76d1\u63a7\u4e0e\u521d\u6b65\u5b9a\u4f4d 1. \u9009\u62e9\u76d1\u63a7\u5de5\u5177 JVM\u5e94\u7528\uff1a\u4f7f\u7528VisualVM\u3001JConsole\u6216\u5546\u4e1a\u5de5\u5177YourKit\uff0c\u5b9e\u65f6\u76d1\u63a7\u5806\u5185\u5b58\u3001GC\u65e5\u5fd7\u53ca\u7ebf\u7a0b\u72b6\u6001\uff1b Native\u5e94\u7528\uff1aValgrind\u3001Dr. Memory\u7b49\u5de5\u5177\u53ef\u68c0\u6d4b\u975e\u6258\u7ba1\u4ee3\u7801\u7684\u5185\u5b58\u95ee\u9898\uff1b \u4e91\u539f\u751f\u73af\u5883\uff1aPrometheus+Grafana\u7ec4\u5408\u652f\u6301\u5bb9\u5668\u7ea7\u5185\u5b58\u6307\u6807\u7684\u53ef\u89c6\u5316\u8ffd\u8e2a\u3002 2. \u8bc6\u522b\u5f02\u5e38\u6a21\u5f0f \u901a\u8fc7\u5185\u5b58\u76d1\u63a7\u56fe\u8868\uff0c\u82e5\u53d1\u73b0\u5806\u5185\u5b58\u5360\u7528\u5448\u73b0\u201c\u952f\u9f7f\u72b6\u4e0a\u5347\u201d\uff08\u6bcf\u6b21GC\u540e\u6700\u4f4e\u70b9\u6301\u7eed\u62ac\u9ad8\uff09\uff0c\u5373\u53ef\u521d\u6b65\u5224\u5b9a\u5b58\u5728\u5185\u5b58\u6cc4\u6f0f\u3002\u4f8b\u5982\uff0c\u67d0\u91d1\u878d\u7cfb\u7edf\u5728\u6bcf\u65e5\u5bf9\u8d26\u540e\u5185\u5b58\u672a\u56de\u843d\u81f3\u57fa\u7ebf\u6c34\u5e73\uff0c\u6700\u7ec8\u9501\u5b9a\u4e3a\u7f13\u5b58\u7b56\u7565\u672a\u8bbe\u7f6e\u8fc7\u671f\u65f6\u95f4\u3002 3. \u6355\u83b7\u5806\u8f6c\u50a8\uff08Heap Dump\uff09 \u5728\u5185\u5b58\u5cf0\u503c\u65f6\u751f\u6210\u5806\u8f6c\u50a8\u6587\u4ef6\uff08\u5982\u901a\u8fc7jmap\u547d\u4ee4\u6216JVM\u53c2\u6570-XX:+HeapDumpOnOutOfMemoryError\uff09\uff0c\u8fd9\u662f\u5206\u6790\u6cc4\u6f0f\u5bf9\u8c61\u7684\u201c\u9ec4\u91d1\u5feb\u7167\u201d\u3002 \u4e09\u3001\u6df1\u5ea6\u5206\u6790\uff1a\u4ece\u5806\u8f6c\u50a8\u5230\u6839\u56e0\u5b9a\u4f4d 1. \u89e3\u6790\u5806\u8f6c\u50a8\u6587\u4ef6 \u4f7f\u7528Eclipse MAT\uff08Memory Analyzer Tool\uff09\u6216JProfiler\u6253\u5f00\u5806\u8f6c\u50a8\uff0c\u91cd\u70b9\u5173\u6ce8\uff1a Dominator Tree\uff1a\u8bc6\u522b\u5360\u7528\u5185\u5b58\u6700\u5927\u7684\u5bf9\u8c61\u53ca\u5f15\u7528\u94fe\uff1b Histogram\uff1a\u7edf\u8ba1\u7c7b\u5b9e\u4f8b\u6570\u91cf\uff0c\u5f02\u5e38\u504f\u9ad8\u7684\u7c7b\u53ef\u80fd\u4e3a\u6cc4\u6f0f\u6e90\uff1b Leak Suspects Report\uff1a\u5de5\u5177\u81ea\u52a8\u751f\u6210\u7684\u6cc4\u6f0f\u5acc\u7591\u5206\u6790\u3002 2. \u8ffd\u8e2a\u5f15\u7528\u94fe\uff08Reference Chain\uff09 \u5047\u8bbe\u5206\u6790\u53d1\u73b0HashMap$Node\u5b9e\u4f8b\u6570\u91cf\u5f02\u5e38\uff0c\u9700\u6cbf\u7740GC Root\uff08\u5982\u9759\u6001\u53d8\u91cf\u3001\u6d3b\u52a8\u7ebf\u7a0b\uff09\u5411\u4e0b\u5c55\u5f00\u5f15\u7528\u8def\u5f84\u3002\u4f8b\u5982\uff0c\u67d0\u793e\u4ea4App\u56e0\u4e8b\u4ef6\u76d1\u542c\u5668\u672a\u6ce8\u9500\uff0c\u5bfc\u81f4\u7528\u6237\u4f1a\u8bdd\u5bf9\u8c61\u65e0\u6cd5\u91ca\u653e\uff0c\u6700\u7ec8\u901a\u8fc7\u5f31\u5f15\u7528\uff08WeakReference\uff09\u6539\u9020\u89e3\u51b3\u95ee\u9898\u3002 3. \u9a8c\u8bc1\u5047\u8bbe \u4ee3\u7801\u5ba1\u67e5\uff1a\u68c0\u67e5\u53ef\u7591\u5bf9\u8c61\u7684\u521b\u5efa\u4e0e\u91ca\u653e\u903b\u8f91\uff1b \u538b\u529b\u6d4b\u8bd5\uff1a\u5728\u9884\u53d1\u73af\u5883\u6a21\u62df\u9ad8\u5e76\u53d1\u573a\u666f\uff0c\u89c2\u5bdf\u5185\u5b58\u53d8\u5316\uff1b \u589e\u91cf\u4fee\u590d\uff1a\u901a\u8fc7\u7248\u672c\u56de\u6eda\u6216\u7070\u5ea6\u53d1\u5e03\u786e\u8ba4\u4fee\u590d\u6548\u679c\u3002 \u56db\u3001\u5178\u578b\u573a\u666f\u4e0e\u89e3\u51b3\u65b9\u6848 \u573a\u666f1\uff1a\u96c6\u5408\u7c7b\u672a\u6e05\u7406 \u6848\u4f8b\uff1a\u7f13\u5b58\u7cfb\u7edf\u4f7f\u7528ConcurrentHashMap\u5b58\u50a8\u4e34\u65f6\u6570\u636e\uff0c\u4f46\u672a\u8bbe\u8ba1\u6dd8\u6c70\u673a\u5236\uff1b \u65b9\u6848\uff1a\u6539\u7528LRU\uff08\u6700\u8fd1\u6700\u5c11\u4f7f\u7528\uff09\u7b56\u7565\u6216Guava Cache\u7684\u8fc7\u671f\u914d\u7f6e\u3002 [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":33056,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14],"tags":[],"class_list":["post-33055","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-product-news"],"_links":{"self":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/33055","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/comments?post=33055"}],"version-history":[{"count":1,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/33055\/revisions"}],"predecessor-version":[{"id":33057,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/posts\/33055\/revisions\/33057"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media\/33056"}],"wp:attachment":[{"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/media?parent=33055"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/categories?post=33055"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.yunshan.net\/blog\/wp-json\/wp\/v2\/tags?post=33055"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}