<!DOCTYPE html>
< html lang = "en-US" >
< head >
< meta charset = "utf-8" >
< meta name = "viewport" content = "width=device-width,initial-scale=1" >
< meta name = "generator" content = "VuePress 2.0.0-beta.51" >
< style >
:root {
--c-bg: #fff;
}
html.dark {
--c-bg: #22272e;
}
html, body {
background-color: var(--c-bg);
}
< / style >
< script >
const userMode = localStorage.getItem('vuepress-color-scheme');
const systemDarkMode = window.matchMedia & & window.matchMedia('(prefers-color-scheme: dark)').matches;
if (userMode === 'dark' || (userMode !== 'light' & & systemDarkMode)) {
document.documentElement.classList.toggle('dark', true);
}
< / script >
< link rel = "icon" href = "/images/favicon.ico" > < meta name = "viewport" content = "width=device-width, initial-scale=1.0" > < meta property = "og:title" content = "Arthas" > < meta property = "og:image:alt" content = "Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas" > < meta property = "og:image" content = "/images/arthas_mate_image.png" > < meta property = "og:description" content = "Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas" > < meta property = "og:image:width" content = "1200" > < meta property = "og:image:height" content = "600" > < meta property = "twitter:image:src" content = "/images/arthas_mate_image.png" > < meta property = "twitter:image:alt" content = "Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas" > < meta itemprop = "name" content = "Arthas" > < meta itemprop = "image" content = "/images/arthas_mate_image.png" > < meta itemprop = "description" content = "Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas - alibaba/arthas: Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas" > < script >
var _hmt = _hmt || [];
(function() {
var hm = document.createElement("script");
hm.src = "https://hm.baidu.com/hm.js?d5c5e25b100f0eb51a4c35c8a86ea9b4";
var s = document.getElementsByTagName("script")[0];
s.parentNode.insertBefore(hm, s);
})();
< / script > < meta name = "aes-config" content = "pid=xux-opensource&user_type=101&uid=&username=&dim10=arthas" > < script src = "//g.alicdn.com/alilog/mlog/aplus_v2.js" id = "beacon-aplus" exparams = "clog=o&aplus&sidx=aplusSidx&ckx=aplusCkx" > < / script > < script src = "//g.alicdn.com/aes/??tracker/1.0.34/index.js,tracker-plugin-pv/2.4.5/index.js,tracker-plugin-event/1.2.5/index.js,tracker-plugin-jserror/1.0.13/index.js,tracker-plugin-api/1.1.14/index.js,tracker-plugin-perf/1.1.8/index.js,tracker-plugin-eventTiming/1.0.4/index.js" > < / script > < title > jvm | arthas< / title > < meta name = "description" content = "arthas user document" >
< link rel = "modulepreload" href = "/assets/app.977e81c1.js" > < link rel = "modulepreload" href = "/assets/jvm.html.a6c0f7fd.js" > < link rel = "modulepreload" href = "/assets/jvm.html.6b3bf176.js" > < link rel = "prefetch" href = "/assets/index.html.9412a900.js" > < link rel = "prefetch" href = "/assets/index.html.3c03373d.js" > < link rel = "prefetch" href = "/assets/index.html.31581b5f.js" > < link rel = "prefetch" href = "/assets/advanced-use.html.3876077d.js" > < link rel = "prefetch" href = "/assets/advice-class.html.e0d4601b.js" > < link rel = "prefetch" href = "/assets/agent.html.ea7c22e0.js" > < link rel = "prefetch" href = "/assets/arthas-properties.html.4eb539b4.js" > < link rel = "prefetch" href = "/assets/arthas3.html.bee7bffc.js" > < link rel = "prefetch" href = "/assets/async.html.473d320c.js" > < link rel = "prefetch" href = "/assets/auth.html.ac4b67f2.js" > < link rel = "prefetch" href = "/assets/base64.html.4b181e89.js" > < link rel = "prefetch" href = "/assets/batch-support.html.a26e2295.js" > < link rel = "prefetch" href = "/assets/cat.html.c8fbb1c5.js" > < link rel = "prefetch" href = "/assets/classloader.html.04ede152.js" > < link rel = "prefetch" href = "/assets/cls.html.315127c2.js" > < link rel = "prefetch" href = "/assets/commands.html.205fab1f.js" > < link rel = "prefetch" href = "/assets/contact-us.html.259f35c3.js" > < link rel = "prefetch" href = "/assets/dashboard.html.72692286.js" > < link rel = "prefetch" href = "/assets/docker.html.37a9000f.js" > < link rel = "prefetch" href = "/assets/download.html.e9e19894.js" > < link rel = "prefetch" href = "/assets/dump.html.aac38ab5.js" > < link rel = "prefetch" href = "/assets/echo.html.7dac4c37.js" > < link rel = "prefetch" href = "/assets/faq.html.0788d4da.js" > < link rel = "prefetch" href = "/assets/getstatic.html.2a0b4f73.js" > < link rel = "prefetch" href = "/assets/grep.html.09b9f3d8.js" > < link rel = "prefetch" href = "/assets/groovy.html.5effbaba.js" > < link rel = "prefetch" href = "/assets/heapdump.html.a85cf9a1.js" > < link rel = "prefetch" href = "/assets/help.html.e5f40d88.js" > < link rel = "prefetch" href = "/assets/history.html.9c7d2f2e.js" > < link rel = "prefetch" href = "/assets/http-api.html.693537fc.js" > < link rel = "prefetch" href = "/assets/idea-plugin.html.0e7ca126.js" > < link rel = "prefetch" href = "/assets/install-detail.html.2265e71c.js" > < link rel = "prefetch" href = "/assets/jad.html.6682b060.js" > < link rel = "prefetch" href = "/assets/jfr.html.4a6ffa9b.js" > < link rel = "prefetch" href = "/assets/jvm.html.bf9d7353.js" > < link rel = "prefetch" href = "/assets/keymap.html.4a935f93.js" > < link rel = "prefetch" href = "/assets/logger.html.1626eaca.js" > < link rel = "prefetch" href = "/assets/manual-install.html.7d61ca70.js" > < link rel = "prefetch" href = "/assets/mbean.html.30acbef7.js" > < link rel = "prefetch" href = "/assets/mc.html.2ccc704e.js" > < link rel = "prefetch" href = "/assets/memory.html.354446c2.js" > < link rel = "prefetch" href = "/assets/monitor.html.c7c0dac3.js" > < link rel = "prefetch" href = "/assets/ognl.html.56febc20.js" > < link rel = "prefetch" href = "/assets/options.html.f2203677.js" > < link rel = "prefetch" href = "/assets/perfcounter.html.4783a666.js" > < link rel = "prefetch" href = "/assets/profiler.html.0af96094.js" > < link rel = "prefetch" href = "/assets/pwd.html.bb923193.js" > < link rel = "prefetch" href = "/assets/quick-start.html.3b81c79e.js" > < link rel = "prefetch" href = "/assets/quit.html.bc71e5cc.js" > < link rel = "prefetch" href = "/assets/redefine.html.c762575e.js" > < link rel = "prefetch" href = "/assets/release-notes.html.fef92c13.js" > < link rel = "prefetch" href = "/assets/reset.html.05dc82b5.js" > < link rel = "prefetch" href = "/assets/retransform.html.21fa57be.js" > < link rel = "prefetch" href = "/assets/save-log.html.8b792c19.js" > < link rel = "prefetch" href = "/assets/sc.html.9e910d92.js" > < link rel = "prefetch" href = "/assets/session.html.620f0ab0.js" > < link rel = "prefetch" href = "/assets/sm.html.00c3d56b.js" > < link rel = "prefetch" href = "/assets/spring-boot-starter.html.07a5bd45.js" > < link rel = "prefetch" href = "/assets/stack.html.17704cc3.js" > < link rel = "prefetch" href = "/assets/start-arthas.html.f299d09e.js" > < link rel = "prefetch" href = "/assets/stop.html.75db3522.js" > < link rel = "prefetch" href = "/assets/sysenv.html.fcd3f33c.js" > < link rel = "prefetch" href = "/assets/sysprop.html.f64847c1.js" > < link rel = "prefetch" href = "/assets/tee.html.6c47fb2b.js" > < li
< link rel = "stylesheet" href = "/assets/style.cf0d4c26.css" >
< / head >
< body >
< div id = "app" > <!-- [ --> < div class = "theme-container" > <!-- [ --> < header class = "navbar" > < div class = "toggle-sidebar-button" title = "toggle sidebar" aria-expanded = "false" role = "button" tabindex = "0" > < div class = "icon" aria-hidden = "true" > < span > < / span > < span > < / span > < span > < / span > < / div > < / div > < span > < a href = "/en/" class = "" data-v-a8869d06 > <!-- --> < span class = "site-name can-hide" data-v-a8869d06 > arthas< / span > < span class = "navbar-version" data-v-a8869d06 > v3.7.2< / span > < / a > < / span > < div class = "navbar-items-wrapper" style = "" > <!-- [ --> <!-- ] --> < nav class = "navbar-items can-hide" > <!-- [ --> < div class = "navbar-item" > < a href = "/en/" class = "" aria-label = "HOME" > <!-- [ --> <!-- ] --> HOME <!-- [ --> <!-- ] --> < / a > < / div > < div class = "navbar-item" > < a class = "external-link" href = "/doc/arthas-tutorials.html?language=en&id=arthas-basics" rel = "noopener noreferrer" target = "_blank" aria-label = "ONLINE TUTORIALS" > <!-- [ --> <!-- ] --> < span > ONLINE TUTORIALS< / span > < span > < svg class = "external-link-icon" xmlns = "http://www.w3.org/2000/svg" aria-hidden = "true" focusable = "false" x = "0px" y = "0px" viewbox = "0 0 100 100" width = "15" height = "15" > < path fill = "currentColor" d = "M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z" > < / path > < polygon fill = "currentColor" points = "45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9" > < / polygon > < / svg > < span class = "external-link-icon-sr-only" > open in new window< / span > < / span > <!-- [ --> <!-- ] --> < / a > < / div > < div class = "navbar-item" > < a href = "/en/doc" class = "router-link-active" aria-label = "DOCS" > <!-- [ --> <!-- ] --> DOCS <!-- [ --> <!-- ] --> < / a > < / div > < div class = "navbar-item" > < a href = "/en/doc/commands.md" class = "" aria-label = "COMMANDS" > <!-- [ --> <!-- ] --> COMMANDS <!-- [ --> <!-- ] --> < / a > < / div > < div class = "navbar-item" > < a href = "/en/doc/download.md" class = "" aria-label = "DOWNLOAD" > <!-- [ --> <!-- ] --> DOWNLOAD <!-- [ --> <!-- ] --> < / a > < / div > < div class = "navbar-item" > < div class = "navbar-dropdown-wrapper" > < button class = "navbar-dropdown-title" type = "button" aria-label = "Select language" > < svg xmlns = "http://www.w3.org/2000/svg" xmlns:xlink = "http://www.w3.org/1999/xlink" width = "1em" height = "1em" style = "height:1.25rem;width:1.25rem;vertical-align:bottom;" viewbox = "0 0 24 24" > < path fill = "currentColor" d = "M13.35 22q-.6 0-.862-.387q-.263-.388-.063-.963l3.65-9.675q.15-.4.563-.688Q17.05 10 17.5 10q.425 0 .85.287q.425.288.575.688l3.65 9.675q.2.575-.062.963q-.263.387-.888.387q-.275 0-.5-.175q-.225-.175-.325-.425l-.85-2.45H15.1l-.875 2.45q-.1.25-.35.425q-.25.175-.525.175Zm2.35-4.8h3.6l-1.75-4.95h-.1ZM7.15 8.55q.4.725.85 1.337q.45.613 1.05 1.263q1.1-1.2 1.825-2.462Q11.6 7.425 12.1 6H2q-.425 0-.712-.287Q1 5.425 1 5t.288-.713Q1.575 4 2 4h6V3q0-.425.288-.713Q8.575 2 9 2t.713.287Q10 2.575 10 3v1h6q.425 0 .712.287Q17 4.575 17 5t-.288.713Q16.425 6 16 6h-1.9q-.525 1.775-1.425 3.45q-.9 1.675-2.225 3.15l2.4 2.45l-.75 2.05L9 14l-4.3 4.3q-.275.275-.7.275q-.425 0-.7-.275q-.275-.275-.275-.7q0-.425.275-.7l4.35-4.35q-.675-.775-1.25-1.563q-.575-.787-1.025-1.662Q5.1 8.8 5.35 8.4t.875-.4q.25 0 .525.162q.275.163.4.388Z" > < / path > < / svg > < span class = "arrow down" > < / span > < / button > < button class = "navbar-dropdown-title-mobile" type = "button" aria-label = "Select language" > < svg xmlns = "http://www.w3.org/2000/svg" xmlns:xlink = "http://www.w3.org/1999/xlink" width = "1em" height = "1em" style = "height:1.25rem;width:1.25rem;vertical-align:bottom;" viewbox = "0 0 24 24" > < path fill = "currentColor" d = "M13.35 22q- . 6 0- . 862- . 387q- . 263- . 388- . 063- . 963l3 . 65-9 . 675q . 15- . 4 . 563- . 688Q17 . 05 10 17 . 5 10q . 425 0 . 85 . 287q . 425 . 288 . 575 . 688l3 . 65 9 . 675q . 2 . 575- . 062 . 963q- . 263 . 387- . 888 . 387q- . 275 0- . 5- . 175q- . 225- . 175- . 325- . 425l- . 85-2 . 45H15 . 1l- . 875 2 . 45q- . 1 . 25- . 35 . 425q- . 25 . 175- . 525 . 175Zm2 . 35-4 . 8h3 . 6l-1 . 75-4 . 95h- . 1ZM7 . 15 8 . 55q . 4 . 725 . 85 1 . 337q . 45 . 613 1 . 05 1 . 263q1 . 1-1 . 2 1 . 825-2 . 462Q11 . 6 7 . 425 12 . 1 6H2q- . 425 0- . 712- . 287Q1 5 . 425 1 5t . 288- . 713Q1 . 575 4 2 4h6V3q0- . 425 . 288- . 713Q8 . 575 2 9 2t . 713 . 287Q10 2 . 575 10 3v1h6q . 425 0 . 712 . 287Q17 4 . 575 17 5t- . 288 . 713Q16 . 425 6 16 6h-1 . 9q- . 525 1 . 775-1 . 425 3 . 45q- . 9 1 . 675-2 . 225 3 . 15l2 . 4 2 . 45l- . 75 2 . 05L9 14l-4 . 3 4 . 3q- . 275 . 275- . 7 . 275q- . 425 0- . 7- . 275q- . 275- . 275- . 275
RUNTIME
--------------------------------------------------------------------------------------------------------------
MACHINE-NAME 37@ff267334bb65
JVM-START-TIME 2020-07-23 07:50:36
MANAGEMENT-SPEC-VERSION 1.2
SPEC-NAME Java Virtual Machine Specification
SPEC-VENDOR Oracle Corporation
SPEC-VERSION 1.8
VM-NAME Java HotSpot(TM) 64-Bit Server VM
VM-VENDOR Oracle Corporation
VM-VERSION 25.201-b09
INPUT-ARGUMENTS []
CLASS-PATH demo-arthas-spring-boot.jar
BOOT-CLASS-PATH /usr/lib/jvm/java-8-oracle/jre/lib/resources.jar:/usr/lib/jvm/java-8-oracle/j
re/lib/rt.jar:/usr/lib/jvm/java-8-oracle/jre/lib/sunrsasign.jar:/usr/lib/jvm/
java-8-oracle/jre/lib/jsse.jar:/usr/lib/jvm/java-8-oracle/jre/lib/jce.jar:/us
r/lib/jvm/java-8-oracle/jre/lib/charsets.jar:/usr/lib/jvm/java-8-oracle/jre/l
ib/jfr.jar:/usr/lib/jvm/java-8-oracle/jre/classes
LIBRARY-PATH /usr/java/packages/lib/amd64:/usr/lib64:/lib64:/lib:/usr/lib
--------------------------------------------------------------------------------------------------------------
CLASS-LOADING
--------------------------------------------------------------------------------------------------------------
LOADED-CLASS-COUNT 7529
TOTAL-LOADED-CLASS-COUNT 7529
UNLOADED-CLASS-COUNT 0
IS-VERBOSE false
--------------------------------------------------------------------------------------------------------------
COMPILATION
--------------------------------------------------------------------------------------------------------------
NAME HotSpot 64-Bit Tiered Compilers
TOTAL-COMPILE-TIME 14921(ms)
--------------------------------------------------------------------------------------------------------------
GARBAGE-COLLECTORS
--------------------------------------------------------------------------------------------------------------
PS Scavenge name : PS Scavenge
[count/time (ms)] collectionCount : 7
collectionTime : 68
PS MarkSweep name : PS MarkSweep
[count/time (ms)] collectionCount : 1
collectionTime : 47
--------------------------------------------------------------------------------------------------------------
MEMORY-MANAGERS
--------------------------------------------------------------------------------------------------------------
CodeCacheManager Code Cache
Metaspace Manager Metaspace
Compressed Class Space
Copy Eden Space
Survivor Space
MarkSweepCompact Eden Space
Survivor Space
Tenured Gen
--------------------------------------------------------------------------------------------------------------
MEMORY
--------------------------------------------------------------------------------------------------------------
HEAP-MEMORY-USAGE init : 268435456(256.0 MiB)
[memory in bytes] used : 18039504(17.2 MiB)
committed : 181403648(173.0 MiB)
max : 3817865216(3.6 GiB)
NO-HEAP-MEMORY-USAGE init : 2555904(2.4 MiB)
[memory in bytes] used : 33926216(32.4 MiB)
committed : 35176448(33.5 MiB)
max : -1(-1 B)
--------------------------------------------------------------------------------------------------------------
OPERATING-SYSTEM
--------------------------------------------------------------------------------------------------------------
OS Linux
ARCH amd64
PROCESSORS-COUNT 3
LOAD-AVERAGE 29.53
VERSION 4.15.0-52-generic
--------------------------------------------------------------------------------------------------------------
THREAD
--------------------------------------------------------------------------------------------------------------
COUNT 30
DAEMON-COUNT 24
PEAK-COUNT 31
STARTED-COUNT 36
DEADLOCK-COUNT 0
--------------------------------------------------------------------------------------------------------------
FILE-DESCRIPTOR
--------------------------------------------------------------------------------------------------------------
MAX-FILE-DESCRIPTOR-COUNT 1048576
OPEN-FILE-DESCRIPTOR-COUNT 100
Affect(row-cnt:0) cost in 88 ms.
< / code > < / pre > < div class = "line-numbers" aria-hidden = "true" > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < div class = "line-number" > < / div > < / div > < / div > < h2 id = "thread-related" tabindex = "-1" > < a class = "header-anchor" href = "#thread-related" aria-hidden = "true" > #< / a > Thread related< / h2 > < ul > < li > COUNT: the count of active threads< / li > < li > DAEMON-COUNT: the count of active daemon threads< / li > < li > PEAK-COUNT: the maximum count of the live threads since JVM starts< / li > < li > STARTED-COUNT: the total count of the created threads since JVM starts< / li > < li > DEADLOCK-COUNT: the count of deadlocked threads< / li > < / ul > < h2 id = "file-descriptor-related" tabindex = "-1" > < a class = "header-anchor" href = "#file-descriptor-related" aria-hidden = "true" > #< / a > File descriptor related< / h2 > < ul > < li > MAX-FILE-DESCRIPTOR-COUNT： < / li > < li > OPEN-FILE-DESCRIPTOR-COUNT： < / li > < / ul > < / div > <!-- [ --> <!-- ] --> < / div > < footer class = "page-meta right-menu-padding" data-v-fdd717e0 > < div class = "meta-item edit-link" > < a class = "external-link meta-item-labe
< script type = "module" src = "/assets/app.977e81c1.js" defer > < / script >
< / body >
< / html >
