{"id":37307,"date":"2023-12-11T14:40:57","date_gmt":"2023-12-11T06:40:57","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=37307"},"modified":"2023-12-11T14:40:57","modified_gmt":"2023-12-11T06:40:57","slug":"%e5%b8%b8%e8%a7%81%e7%9a%84%e5%9e%83%e5%9c%be%e5%9b%9e%e6%94%b6%e5%99%a8%e6%9c%89%e9%82%a3%e4%ba%9b%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/12\/11\/%e5%b8%b8%e8%a7%81%e7%9a%84%e5%9e%83%e5%9c%be%e5%9b%9e%e6%94%b6%e5%99%a8%e6%9c%89%e9%82%a3%e4%ba%9b%ef%bc%9f\/","title":{"rendered":"\u5e38\u89c1\u7684\u5783\u573e\u56de\u6536\u5668\u6709\u90a3\u4e9b\uff1f"},"content":{"rendered":"<p>&#8220;`&#8221;                    <img decoding=\"async\" alt=\"\"\u5783\u573e\u6536\u96c6\u5668\u5206\u7c7b\"\" src=\"\"https:\/\/my-blog-to-use.oss-cn-beijing.aliyuncs.com\/2019-6\/\u5783\u573e\u6536\u96c6\u5668.jpg\"\"><\/p>\n<p><strong>\u5982\u679c\u8bf4\u6536\u96c6\u7b97\u6cd5\u662f\u5185\u5b58\u56de\u6536\u7684\u65b9\u6cd5\u8bba\uff0c\u90a3\u4e48\u5783\u573e\u6536\u96c6\u5668\u5c31\u662f\u5185\u5b58\u56de\u6536\u7684\u5177\u4f53\u5b9e\u73b0\u3002<\/strong><\/p>\n<p>\u867d\u7136\u6211\u4eec\u5bf9\u5404\u4e2a\u6536\u96c6\u5668\u8fdb\u884c\u6bd4\u8f83\uff0c\u4f46\u5e76\u975e\u8981\u6311\u9009\u51fa\u4e00\u4e2a\u6700\u597d\u7684\u6536\u96c6\u5668\u3002\u56e0\u4e3a\u76f4\u5230\u73b0\u5728\u4e3a\u6b62\u8fd8\u6ca1\u6709\u6700\u597d\u7684\u5783\u573e\u6536\u96c6\u5668\u51fa\u73b0\uff0c\u66f4\u52a0\u6ca1\u6709\u4e07\u80fd\u7684\u5783\u573e\u6536\u96c6\u5668\uff0c<strong>\u6211\u4eec\u80fd\u505a\u7684\u5c31\u662f\u6839\u636e\u5177\u4f53\u5e94\u7528\u573a\u666f\u9009\u62e9\u9002\u5408\u81ea\u5df1\u7684\u5783\u573e\u6536\u96c6\u5668<\/strong>\u3002\u8bd5\u60f3\u4e00\u4e0b\uff1a\u5982\u679c\u6709\u4e00\u79cd\u56db\u6d77\u4e4b\u5185\u3001\u4efb\u4f55\u573a\u666f\u4e0b\u90fd\u9002\u7528\u7684\u5b8c\u7f8e\u6536\u96c6\u5668\u5b58\u5728\uff0c\u90a3\u4e48\u6211\u4eec\u7684 HotSpot \u865a\u62df\u673a\u5c31\u4e0d\u4f1a\u5b9e\u73b0\u90a3\u4e48\u591a\u4e0d\u540c\u7684\u5783\u573e\u6536\u96c6\u5668\u4e86\u3002<\/p>\n<h3>4.1 Serial \u6536\u96c6\u5668<\/h3>\n<p>Serial\uff08\u4e32\u884c\uff09\u6536\u96c6\u5668\u6536\u96c6\u5668\u662f\u6700\u57fa\u672c\u3001\u5386\u53f2\u6700\u60a0\u4e45\u7684\u5783\u573e\u6536\u96c6\u5668\u4e86\u3002\u5927\u5bb6\u770b\u540d\u5b57\u5c31\u77e5\u9053\u8fd9\u4e2a\u6536\u96c6\u5668\u662f\u4e00\u4e2a\u5355\u7ebf\u7a0b\u6536\u96c6\u5668\u4e86\u3002\u5b83\u7684 <strong>\u201c\u5355\u7ebf\u7a0b\u201d<\/strong> \u7684\u610f\u4e49\u4e0d\u4ec5\u4ec5\u610f\u5473\u7740\u5b83\u53ea\u4f1a\u4f7f\u7528\u4e00\u6761\u5783\u573e\u6536\u96c6\u7ebf\u7a0b\u53bb\u5b8c\u6210\u5783\u573e\u6536\u96c6\u5de5\u4f5c\uff0c\u66f4\u91cd\u8981\u7684\u662f\u5b83\u5728\u8fdb\u884c\u5783\u573e\u6536\u96c6\u5de5\u4f5c\u7684\u65f6\u5019\u5fc5\u987b\u6682\u505c\u5176\u4ed6\u6240\u6709\u7684\u5de5\u4f5c\u7ebf\u7a0b\uff08 <strong>&#8220;&#8221;Stop The World&#8221;&#8221;<\/strong> \uff09\uff0c\u76f4\u5230\u5b83\u6536\u96c6\u7ed3\u675f\u3002<\/p>\n<p> <strong>\u65b0\u751f\u4ee3\u91c7\u7528\u590d\u5236\u7b97\u6cd5\uff0c\u8001\u5e74\u4ee3\u91c7\u7528\u6807\u8bb0-\u6574\u7406\u7b97\u6cd5\u3002<\/strong><img decoding=\"async\" alt=\"\" Serial \u6536\u96c6\u5668 \"\" src=\"\"http:\/\/my-blog-to-use.oss-cn-beijing.aliyuncs.com\/18-8-27\/46873026.jpg\"\"><\/p>\n<p>\u865a\u62df\u673a\u7684\u8bbe\u8ba1\u8005\u4eec\u5f53\u7136\u77e5\u9053 Stop The World \u5e26\u6765\u7684\u4e0d\u826f\u7528\u6237\u4f53\u9a8c\uff0c\u6240\u4ee5\u5728\u540e\u7eed\u7684\u5783\u573e\u6536\u96c6\u5668\u8bbe\u8ba1\u4e2d\u505c\u987f\u65f6\u95f4\u5728\u4e0d\u65ad\u7f29\u77ed\uff08\u4ecd\u7136\u8fd8\u6709\u505c\u987f\uff0c\u5bfb\u627e\u6700\u4f18\u79c0\u7684\u5783\u573e\u6536\u96c6\u5668\u7684\u8fc7\u7a0b\u4ecd\u7136\u5728\u7ee7\u7eed\uff09\u3002<\/p>\n<p>\u4f46\u662f Serial \u6536\u96c6\u5668\u6709\u6ca1\u6709\u4f18\u4e8e\u5176\u4ed6\u5783\u573e\u6536\u96c6\u5668\u7684\u5730\u65b9\u5462\uff1f\u5f53\u7136\u6709\uff0c\u5b83<strong>\u7b80\u5355\u800c\u9ad8\u6548\uff08\u4e0e\u5176\u4ed6\u6536\u96c6\u5668\u7684\u5355\u7ebf\u7a0b\u76f8\u6bd4\uff09<\/strong>\u3002Serial \u6536\u96c6\u5668\u7531\u4e8e\u6ca1\u6709\u7ebf\u7a0b\u4ea4\u4e92\u7684\u5f00\u9500\uff0c\u81ea\u7136\u53ef\u4ee5\u83b7\u5f97\u5f88\u9ad8\u7684\u5355\u7ebf\u7a0b\u6536\u96c6\u6548\u7387\u3002Serial \u6536\u96c6\u5668\u5bf9\u4e8e\u8fd0\u884c\u5728 Client \u6a21\u5f0f\u4e0b\u7684\u865a\u62df\u673a\u6765\u8bf4\u662f\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002<\/p>\n<h3>4.2 ParNew \u6536\u96c6\u5668<\/h3>\n<p><strong>ParNew \u6536\u96c6\u5668\u5176\u5b9e\u5c31\u662f Serial \u6536\u96c6\u5668\u7684\u591a\u7ebf\u7a0b\u7248\u672c\uff0c\u9664\u4e86\u4f7f\u7528\u591a\u7ebf\u7a0b\u8fdb\u884c\u5783\u573e\u6536\u96c6\u5916\uff0c\u5176\u4f59\u884c\u4e3a\uff08\u63a7\u5236\u53c2\u6570\u3001\u6536\u96c6\u7b97\u6cd5\u3001\u56de\u6536\u7b56\u7565\u7b49\u7b49\uff09\u548c Serial \u6536\u96c6\u5668\u5b8c\u5168\u4e00\u6837\u3002<\/strong><\/p>\n<p> <strong>\u65b0\u751f\u4ee3\u91c7\u7528\u590d\u5236\u7b97\u6cd5\uff0c\u8001\u5e74\u4ee3\u91c7\u7528\u6807\u8bb0-\u6574\u7406\u7b97\u6cd5\u3002<\/strong><img decoding=\"async\" alt=\"\"ParNew \u6536\u96c6\u5668 \"\" src=\"\"http:\/\/my-blog-to-use.oss-cn-beijing.aliyuncs.com\/18-8-27\/22018368.jpg\"\"><\/p>\n<p>\u5b83\u662f\u8bb8\u591a\u8fd0\u884c\u5728 Server \u6a21\u5f0f\u4e0b\u7684\u865a\u62df\u673a\u7684\u9996\u8981\u9009\u62e9\uff0c\u9664\u4e86 Serial \u6536\u96c6\u5668\u5916\uff0c\u53ea\u6709\u5b83\u80fd\u4e0e CMS \u6536\u96c6\u5668\uff08\u771f\u6b63\u610f\u4e49\u4e0a\u7684\u5e76\u53d1\u6536\u96c6\u5668\uff0c\u540e\u9762\u4f1a\u4ecb\u7ecd\u5230\uff09\u914d\u5408\u5de5\u4f5c\u3002<\/p>\n<p><strong>\u5e76\u884c\u548c\u5e76\u53d1\u6982\u5ff5\u8865\u5145\uff1a<\/strong><\/p>\n<ul>\n<li><strong>\u5e76\u884c\uff08Parallel\uff09<\/strong> \uff1a\u6307\u591a\u6761\u5783\u573e\u6536\u96c6\u7ebf\u7a0b\u5e76\u884c\u5de5\u4f5c\uff0c\u4f46\u6b64\u65f6\u7528\u6237\u7ebf\u7a0b\u4ecd\u7136\u5904\u4e8e\u7b49\u5f85\u72b6\u6001\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5e76\u53d1\uff08Concurrent\uff09<\/strong>\uff1a\u6307\u7528\u6237\u7ebf\u7a0b\u4e0e\u5783\u573e\u6536\u96c6\u7ebf\u7a0b\u540c\u65f6\u6267\u884c\uff08\u4f46\u4e0d\u4e00\u5b9a\u662f\u5e76\u884c\uff0c\u53ef\u80fd\u4f1a\u4ea4\u66ff\u6267\u884c\uff09\uff0c\u7528\u6237\u7a0b\u5e8f\u5728\u7ee7\u7eed\u8fd0\u884c\uff0c\u800c\u5783\u573e\u6536\u96c6\u5668\u8fd0\u884c\u5728\u53e6\u4e00\u4e2a CPU \u4e0a\u3002<\/p>\n<\/li>\n<\/ul>\n<h3>4.3 Parallel Scavenge \u6536\u96c6\u5668<\/h3>\n<p>Parallel Scavenge \u6536\u96c6\u5668\u4e5f\u662f\u4f7f\u7528\u590d\u5236\u7b97\u6cd5\u7684\u591a\u7ebf\u7a0b\u6536\u96c6\u5668\uff0c\u5b83\u770b\u4e0a\u53bb\u51e0\u4e4e\u548cParNew\u90fd\u4e00\u6837\u3002 <strong>\u90a3\u4e48\u5b83\u6709\u4ec0\u4e48\u7279\u522b\u4e4b\u5904\u5462\uff1f<\/strong><\/p>\n<p><code><\/code>`-XX:+UseParallelGC <\/p>\n<pre><code>\u4f7f\u7528 Parallel \u6536\u96c6\u5668+ \u8001\u5e74\u4ee3\u4e32\u884c<\/code><\/pre>\n<p>-XX:+UseParallelOldGC<\/p>\n<pre><code>\u4f7f\u7528 Parallel \u6536\u96c6\u5668+ \u8001\u5e74\u4ee3\u5e76\u884c<\/code><\/pre>\n<p><code><\/code>`<\/p>\n<p><strong>Parallel Scavenge \u6536\u96c6\u5668\u5173\u6ce8\u70b9\u662f\u541e\u5410\u91cf\uff08\u9ad8\u6548\u7387\u7684\u5229\u7528 CPU\uff09\u3002CMS \u7b49\u5783\u573e\u6536\u96c6\u5668\u7684\u5173\u6ce8\u70b9\u66f4\u591a\u7684\u662f\u7528\u6237\u7ebf\u7a0b\u7684\u505c\u987f\u65f6\u95f4\uff08\u63d0\u9ad8\u7528\u6237\u4f53\u9a8c\uff09\u3002\u6240\u8c13\u541e\u5410\u91cf\u5c31\u662f CPU \u4e2d\u7528\u4e8e\u8fd0\u884c\u7528\u6237\u4ee3\u7801\u7684\u65f6\u95f4\u4e0e CPU \u603b\u6d88\u8017\u65f6\u95f4\u7684\u6bd4\u503c\u3002<\/strong> Parallel Scavenge \u6536\u96c6\u5668\u63d0\u4f9b\u4e86\u5f88\u591a\u53c2\u6570\u4f9b\u7528\u6237\u627e\u5230\u6700\u5408\u9002\u7684\u505c\u987f\u65f6\u95f4\u6216\u6700\u5927\u541e\u5410\u91cf\uff0c\u5982\u679c\u5bf9\u4e8e\u6536\u96c6\u5668\u8fd0\u4f5c\u4e0d\u592a\u4e86\u89e3\u7684\u8bdd\uff0c\u624b\u5de5\u4f18\u5316\u5b58\u5728\u56f0\u96be\u7684\u8bdd\u53ef\u4ee5\u9009\u62e9\u628a\u5185\u5b58\u7ba1\u7406\u4f18\u5316\u4ea4\u7ed9\u865a\u62df\u673a\u53bb\u5b8c\u6210\u4e5f\u662f\u4e00\u4e2a\u4e0d\u9519\u7684\u9009\u62e9\u3002<\/p>\n<p> <strong>\u65b0\u751f\u4ee3\u91c7\u7528\u590d\u5236\u7b97\u6cd5\uff0c\u8001\u5e74\u4ee3\u91c7\u7528\u6807\u8bb0-\u6574\u7406\u7b97\u6cd5\u3002<\/strong><img decoding=\"async\" alt=\"\"Parallel Scavenge \u6536\u96c6\u5668 \"\" src=\"\"http:\/\/my-blog-to-use.oss-cn-beijing.aliyuncs.com\/18-8-27\/22018368.jpg\"\"><\/p>\n<h3>4.4.Serial Old \u6536\u96c6\u5668<\/h3>\n<p><strong>Serial \u6536\u96c6\u5668\u7684\u8001\u5e74\u4ee3\u7248\u672c<\/strong>\uff0c\u5b83\u540c\u6837\u662f\u4e00\u4e2a\u5355\u7ebf\u7a0b\u6536\u96c6\u5668\u3002\u5b83\u4e3b\u8981\u6709\u4e24\u5927\u7528\u9014\uff1a\u4e00\u79cd\u7528\u9014\u662f\u5728 JDK1.5 \u4ee5\u53ca\u4ee5\u524d\u7684\u7248\u672c\u4e2d\u4e0e Parallel Scavenge \u6536\u96c6\u5668\u642d\u914d\u4f7f\u7528\uff0c\u53e6\u4e00\u79cd\u7528\u9014\u662f\u4f5c\u4e3a CMS \u6536\u96c6\u5668\u7684\u540e\u5907\u65b9\u6848\u3002<\/p>\n<h3>4.5 Parallel Old \u6536\u96c6\u5668<\/h3>\n<p> <strong>Parallel Scavenge \u6536\u96c6\u5668\u7684\u8001\u5e74\u4ee3\u7248\u672c<\/strong>\u3002\u4f7f\u7528\u591a\u7ebf\u7a0b\u548c\u201c\u6807\u8bb0-\u6574\u7406\u201d\u7b97\u6cd5\u3002\u5728\u6ce8\u91cd\u541e\u5410\u91cf\u4ee5\u53ca CPU \u8d44\u6e90\u7684\u573a\u5408\uff0c\u90fd\u53ef\u4ee5\u4f18\u5148\u8003\u8651 Parallel Scavenge \u6536\u96c6\u5668\u548c Parallel Old \u6536\u96c6\u5668\u3002<\/p>\n<h3>4.6 CMS \u6536\u96c6\u5668<\/h3>\n<p><strong>CMS\uff08Concurrent Mark Sweep\uff09\u6536\u96c6\u5668\u662f\u4e00\u79cd\u4ee5\u83b7\u53d6\u6700\u77ed\u56de\u6536\u505c\u987f\u65f6\u95f4\u4e3a\u76ee\u6807\u7684\u6536\u96c6\u5668\u3002\u5b83\u975e\u5e38\u7b26\u5408\u5728\u6ce8\u91cd\u7528\u6237\u4f53\u9a8c\u7684\u5e94\u7528\u4e0a\u4f7f\u7528\u3002<\/strong><\/p>\n<p><strong>CMS\uff08Concurrent Mark Sweep\uff09\u6536\u96c6\u5668\u662f HotSpot \u865a\u62df\u673a\u7b2c\u4e00\u6b3e\u771f\u6b63\u610f\u4e49\u4e0a\u7684\u5e76\u53d1\u6536\u96c6\u5668\uff0c\u5b83\u7b2c\u4e00\u6b21\u5b9e\u73b0\u4e86\u8ba9\u5783\u573e\u6536\u96c6\u7ebf\u7a0b\u4e0e\u7528\u6237\u7ebf\u7a0b\uff08\u57fa\u672c\u4e0a\uff09\u540c\u65f6\u5de5\u4f5c\u3002<\/strong><\/p>\n<p>\u4ece\u540d\u5b57\u4e2d\u7684<strong>Mark Sweep<\/strong>\u8fd9\u4e24\u4e2a\u8bcd\u53ef\u4ee5\u770b\u51fa\uff0cCMS \u6536\u96c6\u5668\u662f\u4e00\u79cd <strong>\u201c\u6807\u8bb0-\u6e05\u9664\u201d\u7b97\u6cd5<\/strong>\u5b9e\u73b0\u7684\uff0c\u5b83\u7684\u8fd0\u4f5c\u8fc7\u7a0b\u76f8\u6bd4\u4e8e\u524d\u9762\u51e0\u79cd\u5783\u573e\u6536\u96c6\u5668\u6765\u8bf4\u66f4\u52a0\u590d\u6742\u4e00\u4e9b\u3002\u6574\u4e2a\u8fc7\u7a0b\u5206\u4e3a\u56db\u4e2a\u6b65\u9aa4\uff1a<\/p>\n<ul>\n<li><strong>\u521d\u59cb\u6807\u8bb0\uff1a<\/strong> \u6682\u505c\u6240\u6709\u7684\u5176\u4ed6\u7ebf\u7a0b\uff0c\u5e76\u8bb0\u5f55\u4e0b\u76f4\u63a5\u4e0e root \u76f8\u8fde\u7684\u5bf9\u8c61\uff0c\u901f\u5ea6\u5f88\u5feb \uff1b<\/li>\n<li><strong>\u5e76\u53d1\u6807\u8bb0\uff1a<\/strong> \u540c\u65f6\u5f00\u542f GC \u548c\u7528\u6237\u7ebf\u7a0b\uff0c\u7528\u4e00\u4e2a\u95ed\u5305\u7ed3\u6784\u53bb\u8bb0\u5f55\u53ef\u8fbe\u5bf9\u8c61\u3002\u4f46\u5728\u8fd9\u4e2a\u9636\u6bb5\u7ed3\u675f\uff0c\u8fd9\u4e2a\u95ed\u5305\u7ed3\u6784\u5e76\u4e0d\u80fd\u4fdd\u8bc1\u5305\u542b\u5f53\u524d\u6240\u6709\u7684\u53ef\u8fbe\u5bf9\u8c61\u3002\u56e0\u4e3a\u7528\u6237\u7ebf\u7a0b\u53ef\u80fd\u4f1a\u4e0d\u65ad\u7684\u66f4\u65b0\u5f15\u7528\u57df\uff0c\u6240\u4ee5 GC \u7ebf\u7a0b\u65e0\u6cd5\u4fdd\u8bc1\u53ef\u8fbe\u6027\u5206\u6790\u7684\u5b9e\u65f6\u6027\u3002\u6240\u4ee5\u8fd9\u4e2a\u7b97\u6cd5\u91cc\u4f1a\u8ddf\u8e2a\u8bb0\u5f55\u8fd9\u4e9b\u53d1\u751f\u5f15\u7528\u66f4\u65b0\u7684\u5730\u65b9\u3002<\/li>\n<li><strong>\u91cd\u65b0\u6807\u8bb0\uff1a<\/strong> \u91cd\u65b0\u6807\u8bb0\u9636\u6bb5\u5c31\u662f\u4e3a\u4e86\u4fee\u6b63\u5e76\u53d1\u6807\u8bb0\u671f\u95f4\u56e0\u4e3a\u7528\u6237\u7a0b\u5e8f\u7ee7\u7eed\u8fd0\u884c\u800c\u5bfc\u81f4\u6807\u8bb0\u4ea7\u751f\u53d8\u52a8\u7684\u90a3\u4e00\u90e8\u5206\u5bf9\u8c61\u7684\u6807\u8bb0\u8bb0\u5f55\uff0c\u8fd9\u4e2a\u9636\u6bb5\u7684\u505c\u987f\u65f6\u95f4\u4e00\u822c\u4f1a\u6bd4\u521d\u59cb\u6807\u8bb0\u9636\u6bb5\u7684\u65f6\u95f4\u7a0d\u957f\uff0c\u8fdc\u8fdc\u6bd4\u5e76\u53d1\u6807\u8bb0\u9636\u6bb5\u65f6\u95f4\u77ed<\/li>\n<li><strong>\u5e76\u53d1\u6e05\u9664\uff1a<\/strong> \u5f00\u542f\u7528\u6237\u7ebf\u7a0b\uff0c\u540c\u65f6 GC \u7ebf\u7a0b\u5f00\u59cb\u5bf9\u4e3a\u6807\u8bb0\u7684\u533a\u57df\u505a\u6e05\u626b\u3002<\/li>\n<\/ul>\n<p><img decoding=\"async\" alt=\"\"CMS \u5783\u573e\u6536\u96c6\u5668 \"\" src=\"\"http:\/\/my-blog-to-use.oss-cn-beijing.aliyuncs.com\/18-8-27\/82825079.jpg\"\"><\/p>\n<p>\u4ece\u5b83\u7684\u540d\u5b57\u5c31\u53ef\u4ee5\u770b\u51fa\u5b83\u662f\u4e00\u6b3e\u4f18\u79c0\u7684\u5783\u573e\u6536\u96c6\u5668\uff0c\u4e3b\u8981\u4f18\u70b9\uff1a<strong>\u5e76\u53d1\u6536\u96c6\u3001\u4f4e\u505c\u987f<\/strong>\u3002\u4f46\u662f\u5b83\u6709\u4e0b\u9762\u4e09\u4e2a\u660e\u663e\u7684\u7f3a\u70b9\uff1a<\/p>\n<ul>\n<li><strong>\u5bf9 CPU \u8d44\u6e90\u654f\u611f\uff1b<\/strong><\/li>\n<li><strong>\u65e0\u6cd5\u5904\u7406\u6d6e\u52a8\u5783\u573e\uff1b<\/strong><\/li>\n<li><strong>\u5b83\u4f7f\u7528\u7684\u56de\u6536\u7b97\u6cd5-\u201c\u6807\u8bb0-\u6e05\u9664\u201d\u7b97\u6cd5\u4f1a\u5bfc\u81f4\u6536\u96c6\u7ed3\u675f\u65f6\u4f1a\u6709\u5927\u91cf\u7a7a\u95f4\u788e\u7247\u4ea7\u751f\u3002<\/strong><\/li>\n<\/ul>\n<h3>4.7 G1 \u6536\u96c6\u5668<\/h3>\n<p><strong>G1 (Garbage-First) \u662f\u4e00\u6b3e\u9762\u5411\u670d\u52a1\u5668\u7684\u5783\u573e\u6536\u96c6\u5668,\u4e3b\u8981\u9488\u5bf9\u914d\u5907\u591a\u9897\u5904\u7406\u5668\u53ca\u5927\u5bb9\u91cf\u5185\u5b58\u7684\u673a\u5668. \u4ee5\u6781\u9ad8\u6982\u7387\u6ee1\u8db3 GC \u505c\u987f\u65f6\u95f4\u8981\u6c42\u7684\u540c\u65f6,\u8fd8\u5177\u5907\u9ad8\u541e\u5410\u91cf\u6027\u80fd\u7279\u5f81.<\/strong><\/p>\n<p>\u88ab\u89c6\u4e3a JDK1.7 \u4e2d HotSpot \u865a\u62df\u673a\u7684\u4e00\u4e2a\u91cd\u8981\u8fdb\u5316\u7279\u5f81\u3002\u5b83\u5177\u5907\u4e00\u4e0b\u7279\u70b9\uff1a<\/p>\n<ul>\n<li><strong>\u5e76\u884c\u4e0e\u5e76\u53d1<\/strong>\uff1aG1 \u80fd\u5145\u5206\u5229\u7528 CPU\u3001\u591a\u6838\u73af\u5883\u4e0b\u7684\u786c\u4ef6\u4f18\u52bf\uff0c\u4f7f\u7528\u591a\u4e2a CPU\uff08CPU \u6216\u8005 CPU \u6838\u5fc3\uff09\u6765\u7f29\u77ed Stop-The-World \u505c\u987f\u65f6\u95f4\u3002\u90e8\u5206\u5176\u4ed6\u6536\u96c6\u5668\u539f\u672c\u9700\u8981\u505c\u987f Java \u7ebf\u7a0b\u6267\u884c\u7684 GC \u52a8\u4f5c\uff0cG1 \u6536\u96c6\u5668\u4ecd\u7136\u53ef\u4ee5\u901a\u8fc7\u5e76\u53d1\u7684\u65b9\u5f0f\u8ba9 java \u7a0b\u5e8f\u7ee7\u7eed\u6267\u884c\u3002<\/li>\n<li><strong>\u5206\u4ee3\u6536\u96c6<\/strong>\uff1a\u867d\u7136 G1 \u53ef\u4ee5\u4e0d\u9700\u8981\u5176\u4ed6\u6536\u96c6\u5668\u914d\u5408\u5c31\u80fd\u72ec\u7acb\u7ba1\u7406\u6574\u4e2a GC \u5806\uff0c\u4f46\u662f\u8fd8\u662f\u4fdd\u7559\u4e86\u5206\u4ee3\u7684\u6982\u5ff5\u3002<\/li>\n<li><strong>\u7a7a\u95f4\u6574\u5408<\/strong>\uff1a\u4e0e CMS \u7684\u201c\u6807\u8bb0&#8211;\u6e05\u7406\u201d\u7b97\u6cd5\u4e0d\u540c\uff0cG1 \u4ece\u6574\u4f53\u6765\u770b\u662f\u57fa\u4e8e\u201c\u6807\u8bb0\u6574\u7406\u201d\u7b97\u6cd5\u5b9e\u73b0\u7684\u6536\u96c6\u5668\uff1b\u4ece\u5c40\u90e8\u4e0a\u6765\u770b\u662f\u57fa\u4e8e\u201c\u590d\u5236\u201d\u7b97\u6cd5\u5b9e\u73b0\u7684\u3002<\/li>\n<li><strong>\u53ef\u9884\u6d4b\u7684\u505c\u987f<\/strong>\uff1a\u8fd9\u662f G1 \u76f8\u5bf9\u4e8e CMS \u7684\u53e6\u4e00\u4e2a\u5927\u4f18\u52bf\uff0c\u964d\u4f4e\u505c\u987f\u65f6\u95f4\u662f G1 \u548c CMS \u5171\u540c\u7684\u5173\u6ce8\u70b9\uff0c\u4f46 G1 \u9664\u4e86\u8ffd\u6c42\u4f4e\u505c\u987f\u5916\uff0c\u8fd8\u80fd\u5efa\u7acb\u53ef\u9884\u6d4b\u7684\u505c\u987f\u65f6\u95f4\u6a21\u578b\uff0c\u80fd\u8ba9\u4f7f\u7528\u8005\u660e\u786e\u6307\u5b9a\u5728\u4e00\u4e2a\u957f\u5ea6\u4e3a M \u6beb\u79d2\u7684\u65f6\u95f4\u7247\u6bb5\u5185\u3002<\/li>\n<\/ul>\n<p>G1 \u6536\u96c6\u5668\u7684\u8fd0\u4f5c\u5927\u81f4\u5206\u4e3a\u4ee5\u4e0b\u51e0\u4e2a\u6b65\u9aa4\uff1a<\/p>\n<ul>\n<li><strong>\u521d\u59cb\u6807\u8bb0<\/strong><\/li>\n<li><strong>\u5e76\u53d1\u6807\u8bb0<\/strong><\/li>\n<li><strong>\u6700\u7ec8\u6807\u8bb0<\/strong><\/li>\n<li><strong>\u7b5b\u9009\u56de\u6536<\/strong><\/li>\n<\/ul>\n<p><strong>G1 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[&hellip;]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-37307","post","type-post","status-publish","format-standard","hentry","category-c"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/37307","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=37307"}],"version-history":[{"count":1,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/37307\/revisions"}],"predecessor-version":[{"id":37308,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/37307\/revisions\/37308"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=37307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=37307"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=37307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}