{"id":9985,"date":"2023-11-28T21:23:02","date_gmt":"2023-11-28T13:23:02","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=9985"},"modified":"2023-12-07T10:37:56","modified_gmt":"2023-12-07T02:37:56","slug":"jvm-zhong-yi-ci-wan-zheng-degc-liu-cheng-shi-zen-y","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhong-yi-ci-wan-zheng-degc-liu-cheng-shi-zen-y\/","title":{"rendered":"JVM\u4e2d\u4e00\u6b21\u5b8c\u6574\u7684GC\u6d41\u7a0b\u662f\u600e\u6837\u7684\uff0c\u5bf9\u8c61\u5982\u4f55\u664b\u5347\u5230\u8001\u5e74\u4ee3\uff1f"},"content":{"rendered":"<p>\u4e00\u6b21\u5b8c\u6574\u7684\u5783\u573e\u56de\u6536\uff08Garbage Collection\uff09\u8fc7\u7a0b\u6d89\u53ca\u5230\u5e74\u8f7b\u4ee3\uff08Young Generation\uff09\u548c\u8001\u5e74\u4ee3\uff08Old Generation\uff09\u4e24\u4e2a\u533a\u57df\u7684\u5783\u573e\u56de\u6536\u3002\u4ee5\u4e0b\u662f\u4e00\u822c\u60c5\u51b5\u4e0b\u7684\u5783\u573e\u56de\u6536\u6d41\u7a0b\uff0c\u4ee5\u53ca\u5bf9\u8c61\u5982\u4f55\u664b\u5347\u5230\u8001\u5e74\u4ee3\u7684\u4e00\u822c\u89c4\u5219\uff1a<\/p>\n<h3><a id=\"1%E5%B9%B4%E8%BD%BB%E4%BB%A3%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6%EF%BC%88-minor-gc%EF%BC%89\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>1. \u5e74\u8f7b\u4ee3\u5783\u573e\u56de\u6536\uff08Minor GC\uff09:<\/h3>\n<ul>\n<li>\n<strong>\u65b0\u5bf9\u8c61\u751f\u6210\uff1a<\/strong> \u65b0\u521b\u5efa\u7684\u5bf9\u8c61\u9996\u5148\u88ab\u5206\u914d\u5728\u5e74\u8f7b\u4ee3\u7684Eden\u533a\u3002\n<\/li>\n<li>\n<strong>Eden\u533a\u56de\u6536\uff1a<\/strong> \u5f53Eden\u533a\u6ee1\u65f6\uff0c\u89e6\u53d1\u4e00\u6b21\u5e74\u8f7b\u4ee3\u5783\u573e\u56de\u6536\u3002\u5728\u5783\u573e\u56de\u6536\u8fc7\u7a0b\u4e2d\uff0c\u5b58\u6d3b\u7684\u5bf9\u8c61\u5c06\u88ab\u590d\u5236\u5230Survivor\u533a\uff08\u901a\u5e38\u6709\u4e24\u4e2aSurvivor\u533a\uff0c\u79f0\u4e3aS0\u548cS1\uff09\u3002\n<\/li>\n<li>\n<strong>Survivor\u533a\u5207\u6362\uff1a<\/strong> \u6bcf\u6b21\u5783\u573e\u56de\u6536\u540e\uff0c\u5b58\u6d3b\u7684\u5bf9\u8c61\u4f1a\u4ece\u4e00\u4e2aSurvivor\u533a\u5207\u6362\u5230\u53e6\u4e00\u4e2a\uff0c\u540c\u65f6\u6e05\u7406\u5f53\u524d\u4f7f\u7528\u7684Eden\u533a\u3002\n<\/li>\n<li>\n<strong>\u591a\u6b21\u590d\u5236\uff1a<\/strong> \u5b58\u6d3b\u7684\u5bf9\u8c61\u7ecf\u8fc7\u591a\u6b21\u5783\u573e\u56de\u6536\u540e\uff0c\u53ef\u80fd\u4f1a\u88ab\u664b\u5347\u5230\u8001\u5e74\u4ee3\u3002\n<\/li>\n<\/ul>\n<h3><a id=\"2%E8%80%81%E5%B9%B4%E4%BB%A3%E5%9E%83%E5%9C%BE%E5%9B%9E%E6%94%B6%EF%BC%88-major-gcfull-gc%EF%BC%89\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>2. \u8001\u5e74\u4ee3\u5783\u573e\u56de\u6536\uff08Major GC\/Full GC\uff09:<\/h3>\n<ul>\n<li>\n<strong>\u5bf9\u8c61\u664b\u5347\uff1a<\/strong> \u5728\u5e74\u8f7b\u4ee3\u7ecf\u5386\u4e86\u591a\u6b21\u5783\u573e\u56de\u6536\u540e\uff0c\u4ecd\u7136\u5b58\u6d3b\u7684\u5bf9\u8c61\u5c06\u4f1a\u88ab\u664b\u5347\u5230\u8001\u5e74\u4ee3\u3002\u664b\u5347\u7684\u5224\u5b9a\u901a\u5e38\u6d89\u53ca\u5bf9\u8c61\u7684\u5e74\u9f84\uff08\u901a\u8fc7\u5bf9\u8c61\u5728Survivor\u533a\u4e2d\u7ecf\u5386\u7684\u5783\u573e\u56de\u6536\u6b21\u6570\u6765\u5224\u65ad\uff09\u3002\n<\/li>\n<li>\n<strong>\u8001\u5e74\u4ee3\u5783\u573e\u56de\u6536\uff1a<\/strong> \u5f53\u8001\u5e74\u4ee3\u7a7a\u95f4\u4e0d\u8db3\u65f6\uff0c\u5c06\u89e6\u53d1\u8001\u5e74\u4ee3\u7684\u5783\u573e\u56de\u6536\u3002\u8001\u5e74\u4ee3\u7684\u5783\u573e\u56de\u6536\u901a\u5e38\u4f7f\u7528\u6807\u8bb0-\u6574\u7406\uff08Mark-Compact\uff09\u7b97\u6cd5\u3002\u6807\u8bb0-\u6574\u7406\u7b97\u6cd5\u4f1a\u6807\u8bb0\u6240\u6709\u5b58\u6d3b\u7684\u5bf9\u8c61\uff0c\u7136\u540e\u5c06\u5b83\u4eec\u6574\u7406\u5230\u4e00\u4fa7\uff0c\u6e05\u7406\u6389\u53e6\u4e00\u4fa7\u7684\u65e0\u7528\u5bf9\u8c61\u3002\n<\/li>\n<\/ul>\n<h3><a id=\"3%E6%B0%B8%E4%B9%85%E4%BB%A3%E6%88%96%E5%85%83%E7%A9%BA%E9%97%B4%EF%BC%88-permanent-generation-or-metaspace%EF%BC%89\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>3. \u6c38\u4e45\u4ee3\u6216\u5143\u7a7a\u95f4\uff08Permanent Generation or Metaspace\uff09:<\/h3>\n<ul>\n<li><strong>\u5143\u7a7a\u95f4\u5783\u573e\u56de\u6536\uff08\u5982\u679c\u4f7f\u7528\u5143\u7a7a\u95f4\uff09\uff1a<\/strong> \u5982\u679c\u4f7f\u7528\u5143\u7a7a\u95f4\u800c\u4e0d\u662f\u6c38\u4e45\u4ee3\uff0c\u5143\u7a7a\u95f4\u4e5f\u4f1a\u5728\u5fc5\u8981\u65f6\u8fdb\u884c\u5783\u573e\u56de\u6536\u3002\u5143\u7a7a\u95f4\u5783\u573e\u56de\u6536\u7684\u5177\u4f53\u65b9\u5f0f\u53d6\u51b3\u4e8eJVM\u7684\u5b9e\u73b0\u3002<\/li>\n<\/ul>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4e0d\u540c\u7684\u5783\u573e\u6536\u96c6\u5668\u548cJVM\u5b9e\u73b0\u53ef\u80fd\u91c7\u7528\u4e0d\u540c\u7684\u7b56\u7565\uff0c\u800c\u4e0a\u8ff0\u6d41\u7a0b\u662f\u4e00\u79cd\u4e00\u822c\u6027\u63cf\u8ff0\u3002\u4f8b\u5982\uff0cG1\uff08Garbage-First\uff09\u6536\u96c6\u5668\u4f7f\u7528\u4e86\u5206\u4ee3\u7684\u601d\u60f3\uff0c\u4f46\u5e76\u975e\u4f20\u7edf\u7684\u5e74\u8f7b\u4ee3\u548c\u8001\u5e74\u4ee3\uff0c\u800c\u662f\u5c06\u6574\u4e2a\u5806\u5212\u5206\u4e3a\u591a\u4e2a\u533a\u57df\uff0c\u5783\u573e\u56de\u6536\u8fc7\u7a0b\u76f8\u5bf9\u590d\u6742\u3002<\/p>\n<p>\u5bf9\u8c61\u664b\u5347\u5230\u8001\u5e74\u4ee3\u7684\u9608\u503c\u548c\u6761\u4ef6\u53ef\u80fd\u4f1a\u6839\u636e\u5177\u4f53\u7684\u5783\u573e\u6536\u96c6\u5668\u548cJVM\u53c2\u6570\u8fdb\u884c\u8c03\u6574\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u6b21\u5b8c\u6574\u7684\u5783\u573e\u56de\u6536\uff08Garbage Collection\uff09\u8fc7\u7a0b\u6d89\u53ca\u5230\u5e74\u8f7b\u4ee3\uff08Young Generation\uff09 [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[119],"tags":[],"class_list":["post-9985","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9985","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\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=9985"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9985\/revisions"}],"predecessor-version":[{"id":16781,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9985\/revisions\/16781"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=9985"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=9985"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=9985"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}