{"id":31209,"date":"2023-03-19T20:57:42","date_gmt":"2023-07-27T16:08:37","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/dockerjava-%e5%9c%a8-java-%e8%bf%9b%e7%a8%8b%e7%9a%84%e5%ae%b9%e5%99%a8%e4%b8%ad%e6%97%a0%e6%b3%95%e4%bd%bf%e7%94%a8-jstat%e3%80%82\/"},"modified":"2025-08-12T22:51:03","modified_gmt":"2025-08-12T14:51:03","slug":"dockerjava-%e5%9c%a8-java-%e8%bf%9b%e7%a8%8b%e7%9a%84%e5%ae%b9%e5%99%a8%e4%b8%ad%e6%97%a0%e6%b3%95%e4%bd%bf%e7%94%a8-jstat%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/dockerjava-%e5%9c%a8-java-%e8%bf%9b%e7%a8%8b%e7%9a%84%e5%ae%b9%e5%99%a8%e4%b8%ad%e6%97%a0%e6%b3%95%e4%bd%bf%e7%94%a8-jstat%e3%80%82\/","title":{"rendered":"[Docker][Java] \u5728 Java \u8fdb\u7a0b\u7684\u5bb9\u5668\u4e2d\u65e0\u6cd5\u4f7f\u7528 jstat"},"content":{"rendered":"<p>\u5173\u4e8e\u4f7f\u7528Docker\u5bb9\u5668\u8fd0\u884c\u7684Java\u8fdb\u7a0b\u4e2d\u7684jstat\u76d1\u63a7\u7684\u8ba8\u8bba\u3002<\/p>\n<p>\u8bd5\u7740\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u6267\u884c\u4e00\u4e0b&#8230; &#8230;)<\/p>\n<pre class=\"post-pre\"><code>$ docker exec -t --user 1000 {container-id} jstat -gc 1\r\n<\/code><\/pre>\n<p>\u53d1\u751f\u4e86\u8fd9\u6837\u7684\u9519\u8bef\u3002<\/p>\n<pre class=\"post-pre\"><code>sun.jvmstat.monitor.MonitorException: 1 not found\r\n        at jdk.internal.jvmstat\/sun.jvmstat.perfdata.monitor.protocol.local.PerfDataBuffer.&lt;init&gt;(PerfDataBuffer.java:84)\r\n        at jdk.internal.jvmstat\/sun.jvmstat.perfdata.monitor.protocol.local.LocalMonitoredVm.&lt;init&gt;(LocalMonitoredVm.java:68)\r\n        at jdk.internal.jvmstat\/sun.jvmstat.perfdata.monitor.protocol.local.MonitoredHostProvider.getMonitoredVm(MonitoredHostProvider.java:77)\r\n        at jdk.jcmd\/sun.tools.jstat.Jstat.logSamples(Jstat.java:107)\r\n        at jdk.jcmd\/sun.tools.jstat.Jstat.main(Jstat.java:70)\r\nCaused by: java.lang.IllegalArgumentException: Could not map vmid to user Name\r\n        at java.base\/jdk.internal.perf.Perf.attach(Native Method)\r\n        at java.base\/jdk.internal.perf.Perf.attachImpl(Perf.java:272)\r\n        at java.base\/jdk.internal.perf.Perf.attach(Perf.java:202)\r\n        at jdk.internal.jvmstat\/sun.jvmstat.perfdata.monitor.protocol.local.PerfDataBuffer.&lt;init&gt;(PerfDataBuffer.java:64)\r\n<\/code><\/pre>\n<p>\u53ea\u8981\u6709\u4e00\u4e2a\u9009\u9879\u5c31\u597d\u3002PID 1 \u4e0d\u5b58\u5728\uff0c\u4f46 Java \u8fdb\u7a0b\u786e\u5b9e\u5728 PID=1 \u4e0a\u8fd0\u884c\u5417\uff1f<\/p>\n<p>\u5728\u9519\u8bef\u4fe1\u606f\u4e2d\u641c\u7d22\u540e\uff0c\u627e\u5230\u4e86\u4ee5\u4e0b\u7c7b\u4f3c\u7684\u6587\u7ae0\u3002<\/p>\n<p>\u5728jdk6u23\u4e2d\uff0cjps\/jstat\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\u7684\u4e00\u4e9b\u5e38\u89c1\u95ee\u9898\u3002<\/p>\n<p>jps \u548c jstat \u67e5\u627e \/tmp\/hsperfdata_{\u7528\u6237\u540d} \u76ee\u5f55\u6765\u83b7\u53d6\u76ee\u6807\u8fdb\u7a0b\u7684\u4fe1\u606f\uff0c\u56e0\u6b64\u5982\u679c \/tmp \u7684\u90e8\u5206\u88ab\u4fee\u6539\u4e3a\u5176\u4ed6\u5c5e\u6027\uff0c\u5b83\u4eec\u5c06\u65e0\u6cd5\u6b63\u5e38\u5de5\u4f5c\u3002<\/p>\n<p>\u5f53\u6211\u8bd5\u7740\u4f7f\u7528Java\u8c03\u8bd5\u547d\u4ee4\u65f6\uff0cjps\u548cjstat\u786e\u5b9e\u65e0\u6cd5\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n<ul class=\"post-ul\">\n<li style=\"list-style-type: none;\">\n<ul class=\"post-ul\">\u00d7 jps<\/ul>\n<\/li>\n<\/ul>\n<p>\u00d7 jstat -gc 1<\/p>\n<p>\u3007 jstack 1<\/p>\n<p>\u3007 jmap -histo:live 1<\/p>\n<p>\u3007 jcmd 1 GC.heap_info<\/p>\n<p>\u7136\u800c\uff0c\u4e0e\u6587\u7ae0\u6240\u8ff0\u4e00\u6837\uff0c\/tmp \u7684\u90e8\u5206\u672a\u88ab\u4fee\u6539\u3002<\/p>\n<p>\u5c3d\u7ba1\u5728Java\u8fdb\u7a0b\u542f\u52a8\u65f6\u5e94\u8be5\u521b\u5efahsperfdata\u76ee\u5f55\uff0c\u4f46\u8be5\u76ee\u5f55\u5c1a\u672a\u521b\u5efa\u3002<\/p>\n<p>\u770b\u8d77\u6765\uff0c\u5982\u679c\u6ca1\u6709\u4e0e\u6267\u884c\u7528\u6237\u7684UID\u5173\u8054\u7684\u7528\u6237\uff0c\u76ee\u6807\u76ee\u5f55\u5c06\u65e0\u6cd5\u521b\u5efa\uff0c\u5c31\u50cfhsperfdata_{\u7528\u6237\u540d}\u4e00\u6837\u3002<\/p>\n<p>\u5728\u8fd0\u884cdocker\u65f6\u53ea\u6307\u5b9a\u6267\u884c\u7528\u6237\u7684UID\u6765\u5207\u6362\u7528\u6237\u662f\u4e0d\u884c\u7684\u3002<\/p>\n<pre class=\"post-pre\"><code>$ docker exec -t --user 1000 {container-id} id\r\nuid=1000 gid=0(root) groups=0(root)  \u2605UID\u306b\u5bfe\u3059\u308b\u30e6\u30fc\u30b6\u304c\u3044\u306a\u3044\r\n<\/code><\/pre>\n<p>\u6240\u4ee5\uff0c\u5728Java\u5bb9\u5668\u7684\u542f\u52a8\u811a\u672c\uff08entrypoint.sh\uff09\u4e2d\uff0c\u6211\u8bd5\u56fe\u4e3aUID\u521b\u5efa\u7528\u6237\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"nv\">UID<\/span><span class=\"o\">=<\/span><span class=\"k\">${<\/span><span class=\"nv\">UID<\/span><span class=\"k\">:-<\/span><span class=\"nv\">1000<\/span><span class=\"k\">}<\/span>\r\nuseradd <span class=\"nt\">-m<\/span> <span class=\"nt\">-u<\/span> <span class=\"k\">${<\/span><span class=\"nv\">UID<\/span><span class=\"k\">}<\/span> myuser\r\n<\/code><\/pre>\n<p>\u53ef\u4ee5\u8bbe\u7f6e\u6267\u884c\u7528\u6237\u3002<\/p>\n<pre class=\"post-pre\"><code>$ docker exec -t --user 1000 {container-id} id\r\nuid=1000(myuser) gid=0(root) groups=0(root)\r\n<\/code><\/pre>\n<p>\u73b0\u5728\u4e5f\u521b\u5efa\u4e86hsperfdata\u76ee\u5f55\u3002<\/p>\n<pre class=\"post-pre\"><code>$ docker exec -t --user 1000 {container-id} ls -1 \/tmp\r\nhsperfdata_myuser\r\n  :\r\n<\/code><\/pre>\n<p>\u73b0\u5728\uff0c\u53ef\u4ee5\u987a\u5229\u83b7\u53d6 jstat \u4e86\u3002<\/p>\n<pre class=\"post-pre\"><code>$ docker exec -t --user 1000 {container-id} jstat -gc 1\r\n S0C    S1C    S0U    S1U      EC       EU        OC         OU       MC     MU    CCSC   CCSU   YGC     YGCT    FGC    FGCT    CGC    CGCT     GCT\r\n 0.0   5120.0  0.0   5120.0 74752.0  10240.0   431104.0   65111.7   75264.0 72714.0 10240.0 9118.1     35    3.934   0      0.000   8      0.397    4.331\r\n<\/code><\/pre>\n<p>\/\/ \u7ed3\u675f\u6587\u4ef6<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5173\u4e8e\u4f7f\u7528Docker\u5bb9\u5668\u8fd0\u884c\u7684Java\u8fdb\u7a0b\u4e2d\u7684jstat\u76d1\u63a7\u7684\u8ba8\u8bba\u3002 \u8bd5\u7740\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u6267\u884c\u4e00\u4e0b&#8230;  [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[227],"class_list":["post-31209","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-227"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Docker][Java] \u5728 Java \u8fdb\u7a0b\u7684\u5bb9\u5668\u4e2d\u65e0\u6cd5\u4f7f\u7528 jstat - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"\u5173\u4e8e[Docker][Java] \u5728 Java \u8fdb\u7a0b\u7684\u5bb9\u5668\u4e2d\u65e0\u6cd5\u4f7f\u7528 jstat\u7684\u6280\u672f\u6587\u7ae0\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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