{"id":9989,"date":"2023-11-28T21:23:11","date_gmt":"2023-11-28T13:23:11","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=9989"},"modified":"2023-12-07T10:38:35","modified_gmt":"2023-12-07T02:38:35","slug":"jvm-zhong-zhu-yao-dejvm-can-shu","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhong-zhu-yao-dejvm-can-shu\/","title":{"rendered":"JVM\u4e2d\u4e3b\u8981\u7684JVM\u53c2\u6570\uff1f"},"content":{"rendered":"<p>JVM\u53c2\u6570\u7528\u4e8e\u914d\u7f6eJava\u865a\u62df\u673a\u7684\u8fd0\u884c\u65f6\u884c\u4e3a\uff0c\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u884c\u9009\u9879\u6216\u8005\u5728\u542f\u52a8\u811a\u672c\u4e2d\u8fdb\u884c\u8bbe\u7f6e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4e3b\u8981\u7684JVM\u53c2\u6570\uff0c\u5b83\u4eec\u53ef\u4ee5\u6839\u636e\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u9700\u6c42\u548c\u7279\u5b9a\u573a\u666f\u8fdb\u884c\u8c03\u6574\uff1a<\/p>\n<h3><a id=\"1%E5%A0%86%E5%86%85%E5%AD%98%E7%9B%B8%E5%85%B3%E5%8F%82%E6%95%B0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>1. <strong>\u5806\u5185\u5b58\u76f8\u5173\u53c2\u6570\uff1a<\/strong><\/h3>\n<ul>\n<li><code>-Xms<\/code>: \u521d\u59cb\u5806\u5927\u5c0f\u3002<\/li>\n<li><code>-Xmx<\/code>: \u6700\u5927\u5806\u5927\u5c0f\u3002<\/li>\n<li><code>-Xmn<\/code>: \u5e74\u8f7b\u4ee3\u5927\u5c0f\u3002<\/li>\n<li><code>-XX:NewRatio<\/code>: \u5e74\u8f7b\u4ee3\u4e0e\u8001\u5e74\u4ee3\u7684\u5927\u5c0f\u6bd4\u4f8b\u3002<\/li>\n<\/ul>\n<h3><a id=\"2%E5%9E%83%E5%9C%BE%E6%94%B6%E9%9B%86%E5%99%A8%E7%9B%B8%E5%85%B3%E5%8F%82%E6%95%B0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>2. <strong>\u5783\u573e\u6536\u96c6\u5668\u76f8\u5173\u53c2\u6570\uff1a<\/strong><\/h3>\n<ul>\n<li><code>-XX:+UseSerialGC<\/code>: \u4f7f\u7528Serial\u6536\u96c6\u5668\u3002<\/li>\n<li><code>-XX:+UseParallelGC<\/code>: \u4f7f\u7528Parallel\u6536\u96c6\u5668\u3002<\/li>\n<li><code>-XX:+UseConcMarkSweepGC<\/code>: \u4f7f\u7528CMS\u6536\u96c6\u5668\u3002<\/li>\n<li><code>-XX:+UseG1GC<\/code>: \u4f7f\u7528G1\u6536\u96c6\u5668\u3002<\/li>\n<li><code>-XX:+UseZGC<\/code>: \u4f7f\u7528Z Garbage Collector\u3002<\/li>\n<\/ul>\n<h3><a id=\"3%E5%9E%83%E5%9C%BE%E6%94%B6%E9%9B%86%E6%97%A5%E5%BF%97%E5%8F%82%E6%95%B0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>3. <strong>\u5783\u573e\u6536\u96c6\u65e5\u5fd7\u53c2\u6570\uff1a<\/strong><\/h3>\n<ul>\n<li><code>-XX:+PrintGCDetails<\/code>: \u8f93\u51fa\u8be6\u7ec6\u7684\u5783\u573e\u6536\u96c6\u4fe1\u606f\u3002<\/li>\n<li><code>-XX:+PrintGCDateStamps<\/code>: \u5728\u5783\u573e\u6536\u96c6\u65e5\u5fd7\u4e2d\u8f93\u51fa\u65e5\u671f\u65f6\u95f4\u6233\u3002<\/li>\n<li><code>-Xloggc:&lt;file&gt;<\/code>: \u5c06\u5783\u573e\u6536\u96c6\u65e5\u5fd7\u8f93\u51fa\u5230\u6307\u5b9a\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<h3><a id=\"4%E6%80%A7%E8%83%BD%E8%B0%83%E4%BC%98%E5%8F%82%E6%95%B0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>4. <strong>\u6027\u80fd\u8c03\u4f18\u53c2\u6570\uff1a<\/strong><\/h3>\n<ul>\n<li><code>-XX:MaxHeapFreeRatio<\/code>: \u5806\u7a7a\u95f2\u65f6\u6700\u5927\u5360\u7528\u6bd4\u4f8b\u3002<\/li>\n<li><code>-XX:MinHeapFreeRatio<\/code>: \u5806\u7a7a\u95f2\u65f6\u6700\u5c0f\u5360\u7528\u6bd4\u4f8b\u3002<\/li>\n<li><code>-XX:MaxMetaspaceSize<\/code>: \u8bbe\u7f6e\u5143\u7a7a\u95f4\u6700\u5927\u5927\u5c0f\u3002<\/li>\n<li><code>-XX:MaxPermSize<\/code> (Java 8\u53ca\u4e4b\u524d): \u8bbe\u7f6e\u6c38\u4e45\u4ee3\u6700\u5927\u5927\u5c0f\u3002<\/li>\n<li><code>-XX:MaxGCPauseMillis<\/code>: \u8bbe\u7f6e\u671f\u671b\u7684\u6700\u5927\u5783\u573e\u56de\u6536\u505c\u987f\u65f6\u95f4\u3002<\/li>\n<\/ul>\n<h3><a id=\"5%E8%B0%83%E8%AF%95%E5%92%8C%E7%9B%91%E6%8E%A7%E5%8F%82%E6%95%B0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>5. <strong>\u8c03\u8bd5\u548c\u76d1\u63a7\u53c2\u6570\uff1a<\/strong><\/h3>\n<ul>\n<li><code>-Xdebug -Xrunjdwp:transport=dt_socket,address=&lt;port&gt;,server=y,suspend=n<\/code>: \u542f\u52a8\u8fdc\u7a0b\u8c03\u8bd5\u3002<\/li>\n<li><code>-XX:+HeapDumpOnOutOfMemoryError<\/code>: \u5728\u5185\u5b58\u6ea2\u51fa\u65f6\u751f\u6210\u5806\u8f6c\u50a8\u5feb\u7167\u3002<\/li>\n<li><code>-XX:HeapDumpPath=&lt;path&gt;<\/code>: \u6307\u5b9a\u5806\u8f6c\u50a8\u6587\u4ef6\u7684\u8def\u5f84\u3002<\/li>\n<\/ul>\n<h3><a id=\"6%E5%85%B6%E4%BB%96%E5%8F%82%E6%95%B0%EF%BC%9A\" class=\"anchor\" aria-hidden=\"true\"><span class=\"octicon octicon-link\"><\/span><\/a>6. <strong>\u5176\u4ed6\u53c2\u6570\uff1a<\/strong><\/h3>\n<ul>\n<li><code>-D&lt;property&gt;=&lt;value&gt;<\/code>: \u8bbe\u7f6eJava\u7cfb\u7edf\u5c5e\u6027\u3002<\/li>\n<li><code>-server<\/code>: \u542f\u7528\u670d\u52a1\u7aef\u6a21\u5f0f\uff0c\u901a\u5e38\u7528\u4e8e\u751f\u4ea7\u73af\u5883\u3002<\/li>\n<li><code>-client<\/code>: \u542f\u7528\u5ba2\u6237\u7aef\u6a21\u5f0f\uff0c\u901a\u5e38\u7528\u4e8e\u5f00\u53d1\u73af\u5883\u3002<\/li>\n<\/ul>\n<p>\u8fd9\u53ea\u662f\u4e00\u5c0f\u90e8\u5206JVM\u53c2\u6570\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u53ef\u80fd\u9700\u8981\u6839\u636e\u5177\u4f53\u9700\u6c42\u8fdb\u884c\u66f4\u8be6\u7ec6\u7684\u8c03\u6574\u3002\u8981\u67e5\u770b\u6240\u6709\u53ef\u7528\u7684JVM\u53c2\u6570\uff0c\u53ef\u4ee5\u4f7f\u7528<code>java -XX:+PrintFlagsFinal<\/code>\u547d\u4ee4\u3002\u6ce8\u610f\uff0c\u4e00\u4e9b\u53c2\u6570\u53ef\u80fd\u5728\u4e0d\u540c\u7684Java\u7248\u672c\u4e2d\u6709\u6240\u4e0d\u540c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>JVM\u53c2\u6570\u7528\u4e8e\u914d\u7f6eJava\u865a\u62df\u673a\u7684\u8fd0\u884c\u65f6\u884c\u4e3a\uff0c\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u884c\u9009\u9879\u6216\u8005\u5728\u542f\u52a8\u811a\u672c\u4e2d\u8fdb\u884c\u8bbe\u7f6e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4e3b\u8981\u7684JV [&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-9989","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9989","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=9989"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9989\/revisions"}],"predecessor-version":[{"id":16782,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/9989\/revisions\/16782"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=9989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=9989"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=9989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}