{"id":10352,"date":"2023-11-28T21:32:54","date_gmt":"2023-11-28T13:32:54","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=10352"},"modified":"2023-12-07T11:17:08","modified_gmt":"2023-12-07T03:17:08","slug":"jvm-zhong-ru-he-kai-qi-he-cha-kangc-ri-zhi","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhong-ru-he-kai-qi-he-cha-kangc-ri-zhi\/","title":{"rendered":"JVM\u4e2d\u5982\u4f55\u5f00\u542f\u548c\u67e5\u770bGC\u65e5\u5fd7\uff1f"},"content":{"rendered":"<p>\u5728Java\u865a\u62df\u673a\uff08JVM\uff09\u4e2d\uff0c\u5f00\u542f\u548c\u67e5\u770b\u5783\u573e\u56de\u6536\uff08GC\uff09\u65e5\u5fd7\u662f\u4e00\u79cd\u5e38\u7528\u7684\u6027\u80fd\u5206\u6790\u548c\u8c03\u4f18\u624b\u6bb5\u3002\u4ee5\u4e0b\u662f\u5f00\u542f\u548c\u67e5\u770bGC\u65e5\u5fd7\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3><a id=\"1%E5%BC%80%E5%90%AF-gc%E6%97%A5%E5%BF%97%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>1. \u5f00\u542fGC\u65e5\u5fd7\uff1a<\/h3>\n<p>\u5728\u542f\u52a8Java\u5e94\u7528\u7a0b\u5e8f\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6eJVM\u53c2\u6570\u6765\u5f00\u542fGC\u65e5\u5fd7\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684JVM\u53c2\u6570\uff1a<\/p>\n<ul>\n<li>\n<strong>\u4e32\u884c\u5783\u573e\u56de\u6536\u5668\uff08Serial GC\uff09\uff1a<\/strong><\/p>\n<pre><code class=\"language-bash\">-XX:+PrintGC -XX:+PrintGCDetails -Xloggc:&lt;log-file-path&gt;\n<\/code><\/pre>\n<\/li>\n<li>\n<strong>\u5e76\u884c\u5783\u573e\u56de\u6536\u5668\uff08Parallel GC\uff09\uff1a<\/strong><\/p>\n<pre><code class=\"language-bash\">-XX:+PrintGC -XX:+PrintGCDetails -Xloggc:&lt;log-file-path&gt;\n<\/code><\/pre>\n<\/li>\n<li>\n<strong>CMS\u5783\u573e\u56de\u6536\u5668\uff08Concurrent Mark-Sweep\uff09\uff1a<\/strong><\/p>\n<pre><code class=\"language-bash\">-XX:+PrintGC -XX:+PrintGCDetails -Xloggc:&lt;log-file-path&gt;\n<\/code><\/pre>\n<\/li>\n<li>\n<strong>G1\u5783\u573e\u56de\u6536\u5668\uff1a<\/strong><\/p>\n<pre><code class=\"language-bash\">-XX:+PrintGC -XX:+PrintGCDetails -Xloggc:&lt;log-file-path&gt;\n<\/code><\/pre>\n<\/li>\n<li>\n<strong>ZGC\u5783\u573e\u56de\u6536\u5668\uff1a<\/strong><\/p>\n<pre><code class=\"language-bash\">-Xlog:gc*:file=&lt;log-file-path&gt;\n<\/code><\/pre>\n<\/li>\n<li>\n<strong>Shenandoah\u5783\u573e\u56de\u6536\u5668\uff1a<\/strong><\/p>\n<pre><code class=\"language-bash\">-Xlog:gc*:file=&lt;log-file-path&gt;\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<p>\u5176\u4e2d\uff0c<code>&lt;log-file-path&gt;<\/code> \u662f\u6307\u5b9aGC\u65e5\u5fd7\u8f93\u51fa\u6587\u4ef6\u7684\u8def\u5f84\u3002<\/p>\n<h3><a id=\"2%E6%9F%A5%E7%9C%8B-gc%E6%97%A5%E5%BF%97%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>2. \u67e5\u770bGC\u65e5\u5fd7\uff1a<\/h3>\n<p>\u5728GC\u65e5\u5fd7\u5f00\u542f\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5668\u6216\u4e13\u4e1a\u7684GC\u65e5\u5fd7\u5206\u6790\u5de5\u5177\u6765\u67e5\u770b\u65e5\u5fd7\u6587\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u7528\u7684\u67e5\u770bGC\u65e5\u5fd7\u7684\u65b9\u6cd5\uff1a<\/p>\n<ul>\n<li>\n<strong>\u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5668\uff1a<\/strong> \u4f7f\u7528\u6587\u672c\u7f16\u8f91\u5668\uff08\u5982<code>cat<\/code>\u3001<code>more<\/code>\u3001<code>less<\/code>\u7b49\uff09\u76f4\u63a5\u67e5\u770bGC\u65e5\u5fd7\u6587\u4ef6\u3002<\/p>\n<pre><code class=\"language-bash\">cat &lt;log-file-path&gt;\n<\/code><\/pre>\n<\/li>\n<li>\n<strong>\u4f7f\u7528GC\u65e5\u5fd7\u5206\u6790\u5de5\u5177\uff1a<\/strong> \u4f7f\u7528\u4e13\u4e1a\u7684GC\u65e5\u5fd7\u5206\u6790\u5de5\u5177\uff0c\u4f8b\u5982<code>jvisualvm<\/code>\u3001<code>VisualGC<\/code>\u3001<code>GCViewer<\/code>\u7b49\uff0c\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u67e5\u770b\u548c\u5206\u6790GC\u65e5\u5fd7\u3002\n<\/li>\n<\/ul>\n<pre><code class=\"language-bash\">jvisualvm\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u53ea\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u65b9\u6cd5\uff0c\u5177\u4f53\u7684\u53c2\u6570\u548c\u5de5\u5177\u9009\u62e9\u53ef\u4ee5\u6839\u636e\u4f7f\u7528\u7684\u5783\u573e\u56de\u6536\u5668\u548c\u9700\u6c42\u8fdb\u884c\u8c03\u6574\u3002GC\u65e5\u5fd7\u80fd\u591f\u63d0\u4f9b\u6709\u5173\u5783\u573e\u56de\u6536\u6d3b\u52a8\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u6709\u52a9\u4e8e\u8fdb\u884c\u6027\u80fd\u8c03\u4f18\u548c\u95ee\u9898\u6392\u67e5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728Java\u865a\u62df\u673a\uff08JVM\uff09\u4e2d\uff0c\u5f00\u542f\u548c\u67e5\u770b\u5783\u573e\u56de\u6536\uff08GC\uff09\u65e5\u5fd7\u662f\u4e00\u79cd\u5e38\u7528\u7684\u6027\u80fd\u5206\u6790\u548c\u8c03\u4f18\u624b\u6bb5\u3002\u4ee5\u4e0b\u662f\u5f00\u542f\u548c\u67e5\u770bG [&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-10352","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10352","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=10352"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10352\/revisions"}],"predecessor-version":[{"id":16826,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10352\/revisions\/16826"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10352"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10352"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10352"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}