{"id":10591,"date":"2023-11-28T21:39:12","date_gmt":"2023-11-28T13:39:12","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=10591"},"modified":"2023-12-07T14:29:29","modified_gmt":"2023-12-07T06:29:29","slug":"jvm-zhong-can-shu-diao-you-he-can-shu-pei-zhi-qing","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhong-can-shu-diao-you-he-can-shu-pei-zhi-qing\/","title":{"rendered":"JVM\u4e2d\u53c2\u6570\u8c03\u4f18\u548c\u53c2\u6570\u914d\u7f6e\uff0c\u8bf7\u95ee\u5982\u4f55\u67e5\u770bJVM\u7cfb\u7edf\u9ed8\u8ba4\u503c\uff1f"},"content":{"rendered":"<p>\u5728 Java \u865a\u62df\u673a\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>java<\/code> \u547d\u4ee4\u7684 <code>-XX:+PrintFlagsFinal<\/code> \u9009\u9879\u6765\u67e5\u770b JVM \u7cfb\u7edf\u7684\u9ed8\u8ba4\u503c\u3002\u8fd9\u9009\u9879\u4f1a\u8f93\u51fa\u6240\u6709\u53ef\u8bbe\u7f6e\u7684 JVM \u53c2\u6570\u53ca\u5176\u9ed8\u8ba4\u503c\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<pre><code class=\"language-bash\">java -XX:+PrintFlagsFinal -version\n<\/code><\/pre>\n<p>\u8fd9\u5c06\u6253\u5370\u51fa\u5927\u91cf\u7684\u4fe1\u606f\uff0c\u5305\u62ec JVM \u7684\u9ed8\u8ba4\u53c2\u6570\u503c\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u641c\u7d22\u5173\u952e\u5b57\u6765\u627e\u5230\u4f60\u611f\u5174\u8da3\u7684\u53c2\u6570\u3002\u4f8b\u5982\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u7ba1\u9053\u548c<code>grep<\/code>\u547d\u4ee4\u6765\u8fc7\u6ee4\u51fa\u4e0e\u5783\u573e\u56de\u6536\u76f8\u5173\u7684\u53c2\u6570\uff1a<\/p>\n<pre><code class=\"language-bash\">java -XX:+PrintFlagsFinal -version | grep &quot;GC&quot;\n<\/code><\/pre>\n<p>\u8fd9\u4f1a\u8f93\u51fa\u6240\u6709\u5305\u542b &quot;GC&quot; \u5173\u952e\u5b57\u7684\u53c2\u6570\u53ca\u5176\u9ed8\u8ba4\u503c\u3002<\/p>\n<p>\u8bf7\u6ce8\u610f\uff0c\u8f93\u51fa\u7684\u4fe1\u606f\u53ef\u80fd\u76f8\u5f53\u5e9e\u5927\uff0c\u56e0\u4e3a\u5305\u542b\u4e86\u6240\u6709 JVM \u53c2\u6570\u3002\u5982\u679c\u4f60\u53ea\u5173\u5fc3\u67d0\u4e2a\u7279\u5b9a\u53c2\u6570\uff0c\u53ef\u4ee5\u76f4\u63a5\u67e5\u627e\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\uff0c\u5982\uff1a<\/p>\n<pre><code class=\"language-bash\">java -XX:+PrintFlagsFinal -version | grep &quot;MaxHeapSize&quot;\n<\/code><\/pre>\n<p>\u8fd9\u5c06\u8f93\u51fa <code>MaxHeapSize<\/code> \u53c2\u6570\u53ca\u5176\u9ed8\u8ba4\u503c\u3002<\/p>\n<p>\u8fd9\u79cd\u65b9\u5f0f\u662f\u4e00\u79cd\u7b80\u4fbf\u7684\u67e5\u770b JVM \u9ed8\u8ba4\u53c2\u6570\u7684\u65b9\u6cd5\uff0c\u4f46\u5728\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\uff0c\u901a\u5e38\u4f1a\u4f7f\u7528\u4e13\u4e1a\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u5982VisualVM\u3001JConsole\u3001Mission Control\u7b49\uff0c\u6765\u66f4\u8be6\u7ec6\u5730\u76d1\u6d4b\u548c\u8c03\u4f18 Java \u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5728 Java \u865a\u62df\u673a\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 java \u547d\u4ee4\u7684 -XX:+PrintFlagsFinal \u9009\u9879\u6765\u67e5\u770b JV [&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-10591","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10591","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=10591"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10591\/revisions"}],"predecessor-version":[{"id":16865,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10591\/revisions\/16865"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10591"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}