{"id":255,"date":"2018-09-22T10:51:04","date_gmt":"2018-09-22T02:51:04","guid":{"rendered":"http:\/\/kaispace.cn\/?p=255"},"modified":"2018-09-22T10:51:04","modified_gmt":"2018-09-22T02:51:04","slug":"java%e8%99%9a%e6%8b%9f%e6%9c%ba%e7%ac%94%e8%ae%b0%ef%bc%884%ef%bc%89%e4%b9%8bjdk%e7%9b%91%e6%8e%a7%e5%92%8c%e6%95%85%e9%9a%9c%e5%a4%84%e7%90%86%e5%b7%a5%e5%85%b7","status":"publish","type":"post","link":"https:\/\/blog.kaispace.cn\/?p=255","title":{"rendered":"Java\u865a\u62df\u673a\u7b14\u8bb0\uff084\uff09\u4e4bJDK\u76d1\u63a7\u548c\u6545\u969c\u5904\u7406\u5de5\u5177"},"content":{"rendered":"

\u8fd9\u4e9b\u5de5\u5177\u90fd\u4f4d\u4e8eJdk\u5b89\u88c5\u8def\u5f84\u4e0b\u7684bin\u6587\u4ef6\u5939\u4e2d<\/span><\/p>\n

1\u3001jps\uff08JVM Process Status Tool\uff09\u865a\u62df\u673a\u8fdb\u7a0b\u72b6\u51b5\u5de5\u5177<\/span><\/h2>\n

\u7528\u4e8e\u663e\u793a\u6307\u5b9a\u7cfb\u7edf\u5185\u6240\u6709\u7684Hotspot\u865a\u62df\u673a\u8fdb\u7a0b\u3002<\/p>\n

\u8f93\u51faLVMID\uff08jps -q\uff09,\u8f93\u51fa\u865a\u62df\u673a\u8fdb\u7a0b\u542f\u52a8\u65f6\u4f20\u9012\u7ed9main()\u7684\u53c2\u6570\uff08jps -l\uff09\uff0c\u8f93\u51fa\u865a\u62df\u673a\u542f\u52a8\u65f6\u7684\u53c2\u6570\uff08jps -v\uff09<\/p><\/blockquote>\n

2\u3001jstat\uff08JVM Statistics Monitoring Tool\uff09\u865a\u62df\u673a\u7edf\u8ba1\u4fe1\u606f\u76d1\u89c6\u5de5\u5177<\/span><\/h2>\n

\u7528\u4e8e\u76d1\u89c6\u865a\u62df\u673a\u5404\u79cd\u8fd0\u884c\u72b6\u6001\u4fe1\u606f\u7684\u547d\u4ee4\u884c\u5de5\u5177\u3002\u662f\u975e\u5e38\u5e38\u7528\u7684\u5de5\u5177\u3002<\/p><\/blockquote>\n

3\u3001jinfo\uff08Configuration Info for Java\uff09Java\u914d\u7f6e\u4fe1\u606f\u5de5\u5177<\/span><\/h2>\n

\u7528\u4e8e\u5b9e\u65f6\u5730\u67e5\u770b\u548c\u8c03\u6574\u865a\u62df\u673a\u5404\u9879\u53c2\u6570\u3002-flag\u53ef\u67e5\u770b\u672a\u663e\u793a\u6307\u5b9a\u7684\u53c2\u6570\u5217\u8868\uff0c-flag [+|-] name\u6216-flag name=vlaue\u53ef\u4fee\u6539\u90e8\u5206\u8fd0\u884c\u671f\u53ef\u5199\u7684\u865a\u62df\u673a\u53c2\u6570\u3002<\/p><\/blockquote>\n

4\u3001jmap\uff08Memory Map for Java\uff09Java\u5185\u5b58\u6620\u50cf\u5de5\u5177<\/span><\/h2>\n

\u7528\u4e8e\u751f\u6210\u5806\u8f6c\u50a8\u5feb\u7167\uff08headdump\u6216\u8005dump\uff09\u6587\u4ef6\u3002\u53ef\u67e5\u8be2finaliz\u6267\u884c\u961f\u5217\uff0cJava\u5806\u548c\u6c38\u4e45\u4ee3\u8be6\u7ec6\u4fe1\u606f\uff08\u7a7a\u95f4\u4f7f\u7528\u7387\uff0c\u7528\u7684\u662f\u4ec0\u4e48\u6536\u96c6\u5668\u7b49\uff09\uff0c\u67e5\u770b\u6bcf\u4e2a\u7c7b\u5b9e\u4f8b\uff0c\u7a7a\u95f4\u5360\u7528\u7edf\u8ba1\u7b49\u3002<\/p><\/blockquote>\n

5\u3001jhat\uff08JVM Heap Analysis Tool\uff09\u865a\u62df\u673a\u5806\u8f6c\u50a8\u5feb\u7167\u5206\u6790\u5de5\u5177<\/span><\/h2>\n

\u642d\u914djmap\u4f7f\u7528\uff0c\u5185\u7f6ehttp\u5fae\u670d\u52a1\u5668\uff0c\u4f46\u662f\u56e0\u4e3a\u529f\u80fd\u7b80\u964b\u4e00\u822c\u4e0d\u4f1a\u7528\u3002<\/p><\/blockquote>\n

6\u3001jstack\uff08<\/span>Stack Trace for Java<\/span>\uff09Java\u5806\u6808\u8ddf\u8e2a\u5de5\u5177<\/span><\/h2>\n

\u7528\u4e8e\u751f\u6210\u865a\u62df\u673a\u5f53\u524d\u65f6\u523b\u7684\u7ebf\u7a0b\u5feb\u7167\uff08threaddump\u6216\u8005javacore\u6587\u4ef6\uff09\u3002\u7ebf\u7a0b\u5feb\u7167\u5c31\u662f\u5f53\u524d\u865a\u62df\u673a\u5185\u6bcf\u4e00\u6761\u7ebf\u7a0b\u6b63\u5728\u6267\u884c\u7684\u65b9\u6cd5\u5806\u6808\u7684\u96c6\u5408\uff0c\u751f\u6210\u7ebf\u7a0b\u5feb\u7167\u7684\u4e3b\u8981\u76ee\u7684\u662f\u5b9a\u4f4d\u7ebf\u7a0b\u51fa\u73b0\u957f\u65f6\u95f4\u505c\u987f\u7684\u539f\u56e0\uff0c\u5982\u7ebf\u7a0b\u95f4\u6b7b\u9501\u3001\u6b7b\u5faa\u73af\u3001\u8bf7\u6c42\u5916\u90e8\u8d44\u6e90\u5bfc\u81f4\u7684\u957f\u65f6\u95f4\u7b49\u5f85\u7b49\u90fd\u662f\u5bfc\u81f4\u7ebf\u7a0b\u957f\u65f6\u95f4\u505c\u987f\u7684\u5e38\u89c1\u539f\u56e0\u3002<\/p><\/blockquote>\n

7\u3001HSDIS\uff1aJIT\u751f\u6210\u4ee3\u7801\u53cd\u6c47\u7f16<\/span><\/h2>\n

8\u3001BTrace\uff1a\u8fd0\u884c\u4e2d\u6ce8\u5165\u4ee3\u7801<\/span><\/h2>\n

Visual VM\u4e2d\u7684\u63d2\u4ef6\uff0c\u4e3a\u4e86\u89e3\u51b3\u96be\u4ee5\u505c\u6b62\u7684\u751f\u4ea7\u73af\u5883\u4e2d\u7684\u670d\u52a1\uff0c\u901a\u8fc7\u6ce8\u5165\u4ee3\u7801\u6253\u5370\u65b9\u6cd5\u53c2\u6570\u548c\u8fd4\u56de\u503c\uff0c\u6253\u5370\u8c03\u7528\u5806\u6808\u3001\u6027\u80fd\u76d1\u63a7\u3001\u5b9a\u4f4d\u8fde\u63a5\u6cc4\u9732\u548c\u5185\u5b58\u6cc4\u9732\u7b49<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"

\u8fd9\u4e9b\u5de5\u5177\u90fd\u4f4d\u4e8eJdk\u5b89\u88c5\u8def\u5f84\u4e0b\u7684bin\u6587\u4ef6\u5939\u4e2d 1\u3001jps\uff08JVM Process Status Tool\uff09\u865a…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[2],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=\/wp\/v2\/posts\/255"}],"collection":[{"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=255"}],"version-history":[{"count":0,"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=\/wp\/v2\/posts\/255\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.kaispace.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}