{"id":6310,"date":"2021-07-13T18:01:02","date_gmt":"2021-07-13T10:01:02","guid":{"rendered":"https:\/\/nj.transwarp.cn:8180\/?p=6310"},"modified":"2022-01-14T14:32:04","modified_gmt":"2022-01-14T06:32:04","slug":"jmap%e3%80%81jstack%e3%80%81jstat%e3%80%81jinfo-%e7%ad%89-jvm-%e4%bf%a1%e6%81%af%e6%94%b6%e9%9b%86%e6%96%b9%e5%bc%8f%ef%bc%9a","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=6310","title":{"rendered":"jmap\u3001jstack\u3001jstat\u3001jinfo \u7b49 jvm \u4fe1\u606f\u6536\u96c6\u65b9\u5f0f"},"content":{"rendered":"<h3>\u6982\u8981\u63cf\u8ff0<\/h3>\n<hr \/>\n<p>\u672c\u6848\u4f8b\u7b80\u5355\u4ecb\u7ecd\u51e0\u4e2aJVM\u5185\u5b58\u5206\u6790\u76f8\u5173\u7684\u547d\u4ee4\uff0c\u4ee5\u53ca\u6848\u4f8b\u89e3\u6790\uff1b<br \/>\n\u672c\u6848\u4f8b\u73af\u5883\uff1aTDH 5.2.2 inceptor-server \u7684\u5185\u5b58\u5206\u6790<\/p>\n<h3>\u8be6\u7ec6\u8bf4\u660e<\/h3>\n<hr \/>\n<p>JVM\u5185\u5b58\u6a21\u578b\u6bd4\u8f83\u590d\u6742\uff0c\u672c\u6587\u53ea\u7b80\u5355\u4ecb\u7ecd\u547d\u4ee4\u7684\u4f7f\u7528\u65b9\u6cd5\uff1a<br \/>\n\u7531\u4e8e TDH 5.2.2 \u7248\u672c\u5df2\u7ecf\u5bb9\u5668\u5316\u4e86\uff0c\u9700\u8981\u8fdb\u5165 pod \u5185\u67e5\u770b java \u8fdb\u7a0b\u7684\u4fe1\u606f\uff0c\u4ee5\u4e0b\u6f14\u793a\u5747\u662f\u5728 pod \u5185\u6f14\u793a\uff1b<br \/>\n\u8fdb\u5165 pod \u7684\u65b9\u6cd5\u53c2\u8003\u5982\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code class=\"language-shell\">[root@tdh6-161~]# kubectl get pods |grep inceptor-server\ninceptor-server-argodbcomputing1-6d8b7586f4-89crm           1\/1     Running   0          5d1h\ninceptor-server-inceptor1-d9ccb8648-7tlpr                   1\/1     Running   1          13d\n\n[root@tdh6-161~]# kubectl exec -ti inceptor-server-inceptor1-d9ccb8648-7tlpr bash\n[root@tdh6-161 ~]# jps\n458 InceptorServer2\n15373 Jps\n[root@tdh6-161 ~]# <\/code><\/pre>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/07\/image-1626169541991.png\" alt=\"file\" \/><\/p>\n<h4>jps<\/h4>\n<p>jps \u4f5c\u7528\u662f\u663e\u793a\u5f53\u524d\u7cfb\u7edf\u7684 java \u8fdb\u7a0b\u60c5\u51b5\uff0c\u53ca\u5176 id \u53f7<\/p>\n<pre><code class=\"language-shell\">jps [-q] [-mlvV] [hostid]<\/code><\/pre>\n<p>\u4f8b\u5982\uff1a\u67e5\u770b\u5f53\u524d\u7cfb\u7edf\u4e0b\uff0c\u5f53\u524d\u7528\u6237\u8fd0\u884c\u7684java\u8fdb\u7a0b\uff08 -v\u53ef\u4ee5\u8f93\u51fa\u5f53\u524djava\u8fdb\u7a0b\u7684\u542f\u52a8\u53c2\u6570\uff09<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/nj.transwarp.cn:8180\/wp-content\/uploads\/2021\/07\/image-1626170114589.png\" alt=\"file\" \/><\/p>\n<h4>jstat<\/h4>\n<p>jstat (JVM statistics Monitoring) \u662f\u7528\u4e8e\u76d1\u89c6\u865a\u62df\u673a\u8fd0\u884c\u65f6\u72b6\u6001\u4fe1\u606f\u7684\u547d\u4ee4\uff0c\u5b83\u53ef\u4ee5\u663e\u793a\u51fa\u865a\u62df\u673a\u8fdb\u7a0b\u4e2d\u7684\u7c7b\u88c5\u8f7d\u3001\u5185\u5b58\u3001\u5783\u573e\u6536\u96c6\u7b49\u8fd0\u884c\u6570\u636e\u3002<\/p>\n<pre><code class=\"language-shell\">jstat -option [-t] [-h lines] vmid [interval [count]]<\/code><\/pre>\n<p>\u4f8b\u5982\uff1a\u67e5\u770b vmid \u4e3a 428 \u7684\u8fdb\u7a0b\u7684 GC \u7edf\u8ba1\u6982\u8ff0\uff0c\u6bcf\u9694 1000ms\u7edf\u8ba1\u4e00\u6b21\uff0c\u5171\u8f93\u51fa 5 \u6b21\uff08 -gc\u6253\u5370\u7684\u5185\u5bb9\u66f4\u8be6\u7ec6\uff0c\u4f46\u662f\u53ef\u8bfb\u6027\u4e0d\u5982 -gcutil\uff09<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/07\/image-1626170190848.png\" alt=\"file\" \/><\/p>\n<h4>jmap<\/h4>\n<p>jmap \u53ef\u4ee5\u751f\u6210 java \u7a0b\u5e8f\u7684 dump \u6587\u4ef6\uff0c\u4e5f\u53ef\u4ee5\u67e5\u770b\u5806\u5185\u5bf9\u8c61\u793a\u4f8b\u7684\u7edf\u8ba1\u4fe1\u606f\u3001\u67e5\u770b ClassLoader \u7684\u4fe1\u606f\u4ee5\u53ca finalizer \u961f\u5217\uff1b<br \/>\n\u4e00\u822c\u5728\u8fd0\u884c\u7f13\u6162\u3001\u6027\u80fd\u4e0b\u964d\u65f6\u6536\u96c6\uff1b<\/p>\n<pre><code class=\"language-shell\">jmap [option] pid<\/code><\/pre>\n<p>\u4f8b\u5982\uff1a\u67e5\u770b pid \u4e3a 428 \u7684\u8fdb\u7a0b\u7684\u5806\u7684\u6d3b\u5bf9\u8c61\u7edf\u8ba1\uff0c\u5305\u62ec\u5bf9\u8c61\u6570\u3001\u5185\u5b58\u5927\u5c0f\uff08 <strong>:live \u5219\u53ea\u7edf\u8ba1\u8fd9\u4e2ajmap \u89e6\u53d1\u7684 fgc \u4e4b\u540e\u4f9d\u7136\u4fdd\u7559\u4e0b\u6765\u7684\u5bf9\u8c61\uff0c\u56e0\u6b64\u5f3a\u70c8\u5efa\u8bae\u5e26\u4e0alive<\/strong>\uff09<\/p>\n<pre><code class=\"language-shell\">$ sudo -u hive jmap -histo:live 428 >> \/var\/log\/inceptor1\/jmap.log  <\/code><\/pre>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/07\/image-1626170268035.png\" alt=\"file\" \/><\/p>\n<p>jmap \u4e3b\u8981\u770b\u54ea\u4e9b\u5bf9\u8c61\u5360\u7528\u4e86\u5927\u91cf\u7684\u5185\u5b58\u7a7a\u95f4\uff0c\u5360\u7528\u7684\u662f\u5426\u5408\u7406\u7b49\u4fe1\u606f\uff0c<strong>\u9700\u8981\u540c\u65f6\u5173\u6ce8\u6570\u91cf\uff08instances\uff09\uff0c\u5927\u5c0f\uff08bytes\uff09<\/strong>\uff1b<br \/>\njmap \u4fe1\u606f\u7684\u6700\u540e\u7684\u4e00\u884c Total \u663e\u793a\u4e86\u5bf9\u8c61\u7684\u6570\u91cf\u4ee5\u53ca\u4ed6\u4eec\u4f7f\u7528\u7684\u5185\u5b58\u4fe1\u606f\uff1b<\/p>\n<p>jmap \u8fd8\u6709\u4e00\u4e2a\u66f4\u52a0\u8be6\u7ec6\u7684\u5806\u5185\u5b58\u4fe1\u606f heapdump\uff0c\u4e00\u822c\u8be5\u6587\u4ef6\u6bd4\u8f83\u5927\uff0c10G \u4ee5\u4e0a\uff0c\u53ef\u4ee5\u5728\u51fa\u95ee\u9898\u7684\u65f6\u5019\u6536\u96c6\u4fdd\u5b58\u4e00\u4e0b\uff0c\u540e\u7eed\u5982\u679c\u9700\u8981\u518d\u63d0\u4f9b\u5373\u53ef\u3002\u6536\u96c6\u65b9\u6cd5\u5982\u4e0b\uff1a<br \/>\n\u4f8b\u5982\uff1a\u67e5\u770b pid \u4e3a 428 \u7684\u8fdb\u7a0b\u7684\u5806\u5185\u5b58\u4fe1\u606f\uff1a<\/p>\n<pre><code class=\"language-shell\">$ sudo -u hive jmap -dump:live,format=b,file=heap-dump.bin 428<\/code><\/pre>\n<p>\u6536\u96c6\u83b7\u5f97\u7684\u6587\u4ef6\u5728\u5f53\u524d\u76ee\u5f55\u4e0b\uff0c\u6587\u4ef6\u540d\u4e3a heap-dump.bin\u3002<\/p>\n<h4>jstack<\/h4>\n<p>jstack \u662f\u7528\u4e8e\u751f\u6210 java \u865a\u62df\u673a\u5f53\u524d\u65f6\u523b\u7684\u7ebf\u7a0b\u5feb\u7167\u3002<br \/>\n\u7ebf\u7a0b\u5feb\u7167\u662f\u5f53\u524d JVM \u5185\u6bcf\u4e00\u4e2a\u7ebf\u7a0b\u6b63\u5728\u6267\u884c\u7684\u65b9\u6cd5\u5806\u6808\u7684\u96c6\u5408\uff0c\u4e00\u822c\u5728\u670d\u52a1\u5361\u4f4f\u7684\u65f6\u5019\u6536\u96c6\uff08\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\uff09\uff1b \u7ebf\u7a0b\u51fa\u73b0\u505c\u987f\u7684\u65f6\u5019\u901a\u8fc7jstack\u6765\u67e5\u770b\u5404\u4e2a\u7ebf\u7a0b\u7684\u8c03\u7528\u5806\u6808\uff0c\u5c31\u53ef\u4ee5\u77e5\u9053\u6ca1\u6709\u54cd\u5e94\u7684\u7ebf\u7a0b\u5230\u5e95\u5728\u540e\u53f0\u505a\u4ec0\u4e48\u4e8b\u60c5\uff0c\u6216\u8005\u7b49\u5f85\u4ec0\u4e48\u8d44\u6e90\u3002<\/p>\n<pre><code class=\"language-shell\">jstack [-l] pid<\/code><\/pre>\n<p>\u4f8b\u5982\uff1a\u67e5\u770bpid\u4e3a458\u8fdb\u7a0b\u5bf9\u5e94\u7684\u7ebf\u7a0b\u5feb\u7167\u3001\u5404\u7ebf\u7a0b\u7684\u8fd0\u884c\u60c5\u51b5\u7b49\u4fe1\u606f<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/07\/image-1626170362830.png\" alt=\"file\" \/><\/p>\n<p>jstack \u4e3b\u8981\u770b\u7ebf\u7a0b\u4e4b\u95f4\u8d44\u6e90\u62a2\u5360\u60c5\u51b5\uff0c\u662f\u5206\u6790\u7ebf\u7a0b\u6267\u884c\u5feb\u6162\u7684\u4e00\u79cd\u65b9\u6cd5\uff1b<\/p>\n<h4>jinfo<\/h4>\n<p>jinfo(JVM Configuration info) \u662f\u5b9e\u65f6\u67e5\u770b\u548c\u8c03\u6574\u865a\u62df\u673a\u8fd0\u884c\u53c2\u6570\u7684\u547d\u4ee4\u3002\u548c jps -v\u4e0d\u540c\u7684\u5730\u65b9\u662f\uff0cjinfo \u53ef\u4ee5\u663e\u793a\u672a\u6307\u5b9a\u7684\u53c2\u6570\u7684\u503c\uff0c\u4e5f\u5c31\u662f\u9ed8\u8ba4\u8fd0\u884c\u53c2\u6570\u7684\u503c\uff1b<\/p>\n<h5>\u547d\u4ee4\u683c\u5f0f<\/h5>\n<pre><code class=\"language-shell\">jinfo [option] pid<\/code><\/pre>\n<p>\u4f8b\u5982\uff1a\u67e5\u770b pid \u4e3a428\u7684\u8fdb\u7a0b\u7684\u8fd0\u884c\u53c2\u6570\uff08\u5982\u679c\u4e0d\u5e26\u4efb\u4f55\u53c2\u6570\uff0c\u53ef\u4ee5\u663e\u793a\u8be5\u8fdb\u7a0b\u5bf9\u5e94\u7684\u6240\u6709JVM\u4fe1\u606f\uff09<\/p>\n<pre><code class=\"language-shell\">$ jinfo -flags 428<\/code><\/pre>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/07\/image-1626170433487.png\" alt=\"file\" \/><\/p>\n<p>jinfo\u5728\u4e0d\u52a0\u4efb\u4f55\u53c2\u6570\u7684\u60c5\u51b5\u4e0b\uff0c\u8f93\u51fa\u5185\u5bb9\u6bd4\u8f83\u8be6\u7ec6\uff0c\u4e00\u822c\u7528\u6765\u5206\u6790\u810f\u5305\uff1b\u4e5f\u53ef\u4ee5\u7528\u6765\u68c0\u67e5\u542f\u52a8\u53c2\u6570\u662f\u5426\u6b63\u5e38\uff1b<\/p>\n<h4>\u9644\u5f55<\/h4>\n<p>\u661f\u73af\u79d1\u6280\u552e\u540e\u6280\u672f\u652f\u6301\u63d0\u4f9b\u4e00\u952e\u6536\u96c6 jmap \u4e0e jstack \u7684\u811a\u672c\uff0c\u53ef\u4ee5 <a href=\"https:\/\/nj.transwarp.cn:8180\/?p=641\" title=\"\u8054\u7cfb\u661f\u73af\u79d1\u6280\u5168\u7403\u6280\u672f\u652f\u6301\u4e2d\u5fc3\">\u8054\u7cfb\u661f\u73af\u79d1\u6280\u5168\u7403\u6280\u672f\u652f\u6301\u4e2d\u5fc3<\/a> \u83b7\u53d6\u811a\u672c\uff1b<br \/>\n<a href=\"https:\/\/nj.transwarp.club:666\/main.html?download&weblink=6a2226ea51de7e749fc9f70fea833fbb&realfilename=getjvm.sh\" title=\"**getjvm.sh**\"><strong>getjvm.sh<\/strong><\/a><br \/>\n\u4f7f\u7528\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code class=\"language-shell\">[root@tdh-01~\/mysh]# bash getjvm.sh inceptor1 jmap\n2021-07-13 17:52:39 getjvm.sh Collect Jmap information of inceptor1 server on tdh-01 to \/var\/log\/inceptor1\/jmap successed\n2021-07-13 17:52:42 getjvm.sh Collect Jmap information of inceptor1 metastore on tdh-01 to \/var\/log\/inceptor1\/jmap successed\n2021-07-13 17:52:47 getjvm.sh Collect Jmap information of inceptor1 executor on tdh-02 to \/var\/log\/inceptor1\/jmap successed\n2021-07-13 17:52:51 getjvm.sh Collect Jmap information of inceptor1 executor on tdh-03 to \/var\/log\/inceptor1\/jmap successed\n2021-07-13 17:52:56 getjvm.sh Collect Jmap information of inceptor1 executor on tdh-01 to \/var\/log\/inceptor1\/jmap successed\n[root@tdh-01~\/mysh]# <\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981\u63cf\u8ff0 \u672c\u6848\u4f8b\u7b80\u5355\u4ecb\u7ecd\u51e0\u4e2aJVM\u5185\u5b58\u5206\u6790\u76f8\u5173\u7684\u547d\u4ee4\uff0c\u4ee5\u53ca\u6848\u4f8b\u89e3\u6790\uff1b \u672c\u6848\u4f8b\u73af\u5883\uff1aTDH 5.2.2 ince ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/kbwp.transwarp.cn\/?p=6310\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6310","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/6310","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6310"}],"version-history":[{"count":1,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/6310\/revisions"}],"predecessor-version":[{"id":6317,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/6310\/revisions\/6317"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}