Google Git
Sign in
eclipse / www.eclipse.org / openj9 / docs / 8bbbf997c9f67ade1c184b18958838d26ae669ab / . / version0.18 / index.html
blob: 0bfc63fe5dff4f983b74e33b222e42120a7b2b4f [file] [log] [blame]
<!doctype html>
<html lang="en" class="no-js">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<meta name="description" content="Eclipse OpenJ9 documentation">
<link rel="canonical" href="https://www.eclipse.org/openj9/docs/version0.18/">
<link rel="icon" href="../cr/openj9-logo.svg">
<meta name="generator" content="mkdocs-1.1.2, mkdocs-material-7.1.4">
<title>Version 0.18.1 - </title>
<link rel="stylesheet" href="../assets/stylesheets/main.bde7dde4.min.css">
<link rel="stylesheet" href="../assets/stylesheets/palette.ef6f36e2.min.css">
<meta name="theme-color" content="#009485">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:300,400,400i,700%7CRoboto+Mono&display=fallback">
<style>:root{--md-text-font-family:"Roboto";--md-code-font-family:"Roboto Mono"}</style>
<link rel="stylesheet" href="../stylesheets/oj9.css">
</head>
<body dir="ltr" data-md-color-scheme="" data-md-color-primary="teal" data-md-color-accent="cyan">
<script>function __prefix(e){return new URL("..",location).pathname+"."+e}function __get(e,t=localStorage){return JSON.parse(t.getItem(__prefix(e)))}</script>
<input class="md-toggle" data-md-toggle="drawer" type="checkbox" id="__drawer" autocomplete="off">
<input class="md-toggle" data-md-toggle="search" type="checkbox" id="__search" autocomplete="off">
<label class="md-overlay" for="__drawer"></label>
<div data-md-component="skip">
<a href="#whats-new-in-version-0181" class="md-skip">
Skip to content
</a>
</div>
<div data-md-component="announce">
</div>
<header class="md-header" data-md-component="header">
<nav class="md-header__inner md-grid" aria-label="Header">
<a href=".." title=" " class="md-header__button md-logo" aria-label=" " data-md-component="logo">
<img src="../cr/openj9_6b.png" alt="logo">
</a>
<label class="md-header__button md-icon" for="__drawer">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2z"/></svg>
</label>
<div class="md-header__title" data-md-component="header-title">
<div class="md-header__ellipsis">
<div class="md-header__topic">
<span class="md-ellipsis">
</span>
</div>
<div class="md-header__topic" data-md-component="header-topic">
<span class="md-ellipsis">
Version 0.18.1
</span>
</div>
</div>
</div>
<label class="md-header__button md-icon" for="__search">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5z"/></svg>
</label>
<div class="md-search" data-md-component="search" role="dialog">
<label class="md-search__overlay" for="__search"></label>
<div class="md-search__inner" role="search">
<form class="md-search__form" name="search">
<input type="text" class="md-search__input" name="query" aria-label="Search" placeholder="Search" autocapitalize="off" autocorrect="off" autocomplete="off" spellcheck="false" data-md-component="search-query" data-md-state="active" required>
<label class="md-search__icon md-icon" for="__search">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9.5 3A6.5 6.5 0 0 1 16 9.5c0 1.61-.59 3.09-1.56 4.23l.27.27h.79l5 5-1.5 1.5-5-5v-.79l-.27-.27A6.516 6.516 0 0 1 9.5 16 6.5 6.5 0 0 1 3 9.5 6.5 6.5 0 0 1 9.5 3m0 2C7 5 5 7 5 9.5S7 14 9.5 14 14 12 14 9.5 12 5 9.5 5z"/></svg>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12z"/></svg>
</label>
<button type="reset" class="md-search__icon md-icon" aria-label="Clear" tabindex="-1">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M19 6.41 17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41z"/></svg>
</button>
</form>
<div class="md-search__output">
<div class="md-search__scrollwrap" data-md-scrollfix>
<div class="md-search-result" data-md-component="search-result">
<div class="md-search-result__meta">
Initializing search
</div>
<ol class="md-search-result__list"></ol>
</div>
</div>
</div>
</div>
</div>
<div class="md-header__source">
<a href="https://github.com/eclipse-openj9/openj9" title="Go to repository" class="md-source" data-md-component="source">
<div class="md-source__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512"><path d="M165.9 397.4c0 2-2.3 3.6-5.2 3.6-3.3.3-5.6-1.3-5.6-3.6 0-2 2.3-3.6 5.2-3.6 3-.3 5.6 1.3 5.6 3.6zm-31.1-4.5c-.7 2 1.3 4.3 4.3 4.9 2.6 1 5.6 0 6.2-2s-1.3-4.3-4.3-5.2c-2.6-.7-5.5.3-6.2 2.3zm44.2-1.7c-2.9.7-4.9 2.6-4.6 4.9.3 2 2.9 3.3 5.9 2.6 2.9-.7 4.9-2.6 4.6-4.6-.3-1.9-3-3.2-5.9-2.9zM244.8 8C106.1 8 0 113.3 0 252c0 110.9 69.8 205.8 169.5 239.2 12.8 2.3 17.3-5.6 17.3-12.1 0-6.2-.3-40.4-.3-61.4 0 0-70 15-84.7-29.8 0 0-11.4-29.1-27.8-36.6 0 0-22.9-15.7 1.6-15.4 0 0 24.9 2 38.6 25.8 21.9 38.6 58.6 27.5 72.9 20.9 2.3-16 8.8-27.1 16-33.7-55.9-6.2-112.3-14.3-112.3-110.5 0-27.5 7.6-41.3 23.6-58.9-2.6-6.5-11.1-33.3 2.6-67.9 20.9-6.5 69 27 69 27 20-5.6 41.5-8.5 62.8-8.5s42.8 2.9 62.8 8.5c0 0 48.1-33.6 69-27 13.7 34.7 5.2 61.4 2.6 67.9 16 17.7 25.8 31.5 25.8 58.9 0 96.5-58.9 104.2-114.8 110.5 9.2 7.9 17 22.9 17 46.4 0 33.7-.3 75.4-.3 83.6 0 6.5 4.6 14.4 17.3 12.1C428.2 457.8 496 362.9 496 252 496 113.3 383.5 8 244.8 8zM97.2 352.9c-1.3 1-1 3.3.7 5.2 1.6 1.6 3.9 2.3 5.2 1 1.3-1 1-3.3-.7-5.2-1.6-1.6-3.9-2.3-5.2-1zm-10.8-8.1c-.7 1.3.3 2.9 2.3 3.9 1.6 1 3.6.7 4.3-.7.7-1.3-.3-2.9-2.3-3.9-2-.6-3.6-.3-4.3.7zm32.4 35.6c-1.6 1.3-1 4.3 1.3 6.2 2.3 2.3 5.2 2.6 6.5 1 1.3-1.3.7-4.3-1.3-6.2-2.2-2.3-5.2-2.6-6.5-1zm-11.4-14.7c-1.6 1-1.6 3.6 0 5.9 1.6 2.3 4.3 3.3 5.6 2.3 1.6-1.3 1.6-3.9 0-6.2-1.4-2.3-4-3.3-5.6-2z"/></svg>
</div>
<div class="md-source__repository">
eclipse-openj9/openj9
</div>
</a>
</div>
</nav>
</header>
<div class="md-container" data-md-component="container">
<main class="md-main" data-md-component="main">
<div class="md-main__inner md-grid">
<div class="md-sidebar md-sidebar--primary" data-md-component="sidebar" data-md-type="navigation" >
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--primary" aria-label="Navigation" data-md-level="0">
<label class="md-nav__title" for="__drawer">
<a href=".." title=" " class="md-nav__button md-logo" aria-label=" " data-md-component="logo">
<img src="../cr/openj9_6b.png" alt="logo">
</a>
</label>
<div class="md-nav__source">
<a href="https://github.com/eclipse-openj9/openj9" title="Go to repository" class="md-source" data-md-component="source">
<div class="md-source__icon md-icon">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512"><path d="M165.9 397.4c0 2-2.3 3.6-5.2 3.6-3.3.3-5.6-1.3-5.6-3.6 0-2 2.3-3.6 5.2-3.6 3-.3 5.6 1.3 5.6 3.6zm-31.1-4.5c-.7 2 1.3 4.3 4.3 4.9 2.6 1 5.6 0 6.2-2s-1.3-4.3-4.3-5.2c-2.6-.7-5.5.3-6.2 2.3zm44.2-1.7c-2.9.7-4.9 2.6-4.6 4.9.3 2 2.9 3.3 5.9 2.6 2.9-.7 4.9-2.6 4.6-4.6-.3-1.9-3-3.2-5.9-2.9zM244.8 8C106.1 8 0 113.3 0 252c0 110.9 69.8 205.8 169.5 239.2 12.8 2.3 17.3-5.6 17.3-12.1 0-6.2-.3-40.4-.3-61.4 0 0-70 15-84.7-29.8 0 0-11.4-29.1-27.8-36.6 0 0-22.9-15.7 1.6-15.4 0 0 24.9 2 38.6 25.8 21.9 38.6 58.6 27.5 72.9 20.9 2.3-16 8.8-27.1 16-33.7-55.9-6.2-112.3-14.3-112.3-110.5 0-27.5 7.6-41.3 23.6-58.9-2.6-6.5-11.1-33.3 2.6-67.9 20.9-6.5 69 27 69 27 20-5.6 41.5-8.5 62.8-8.5s42.8 2.9 62.8 8.5c0 0 48.1-33.6 69-27 13.7 34.7 5.2 61.4 2.6 67.9 16 17.7 25.8 31.5 25.8 58.9 0 96.5-58.9 104.2-114.8 110.5 9.2 7.9 17 22.9 17 46.4 0 33.7-.3 75.4-.3 83.6 0 6.5 4.6 14.4 17.3 12.1C428.2 457.8 496 362.9 496 252 496 113.3 383.5 8 244.8 8zM97.2 352.9c-1.3 1-1 3.3.7 5.2 1.6 1.6 3.9 2.3 5.2 1 1.3-1 1-3.3-.7-5.2-1.6-1.6-3.9-2.3-5.2-1zm-10.8-8.1c-.7 1.3.3 2.9 2.3 3.9 1.6 1 3.6.7 4.3-.7.7-1.3-.3-2.9-2.3-3.9-2-.6-3.6-.3-4.3.7zm32.4 35.6c-1.6 1.3-1 4.3 1.3 6.2 2.3 2.3 5.2 2.6 6.5 1 1.3-1.3.7-4.3-1.3-6.2-2.2-2.3-5.2-2.6-6.5-1zm-11.4-14.7c-1.6 1-1.6 3.6 0 5.9 1.6 2.3 4.3 3.3 5.6 2.3 1.6-1.3 1.6-3.9 0-6.2-1.4-2.3-4-3.3-5.6-2z"/></svg>
</div>
<div class="md-source__repository">
eclipse-openj9/openj9
</div>
</a>
</div>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href=".." class="md-nav__link">
About the docs
</a>
</li>
<li class="md-nav__item">
<a href="../builds/" class="md-nav__link">
OpenJ9 builds
</a>
</li>
<li class="md-nav__item">
<a href="../introduction/" class="md-nav__link">
Getting started
</a>
</li>
<li class="md-nav__item">
<a href="../openj9_newuser/" class="md-nav__link">
New to OpenJ9?
</a>
</li>
<li class="md-nav__item md-nav__item--active md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_5" type="checkbox" id="__nav_5" checked>
<label class="md-nav__link" for="__nav_5">
Release notes
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Release notes" data-md-level="1">
<label class="md-nav__title" for="__nav_5">
<span class="md-nav__icon md-icon"></span>
Release notes
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../openj9_releases/" class="md-nav__link">
Overview
</a>
</li>
<li class="md-nav__item">
<a href="../version0.30.1/" class="md-nav__link">
Version 0.30.1
</a>
</li>
<li class="md-nav__item">
<a href="../version0.30/" class="md-nav__link">
Version 0.30.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.29.1/" class="md-nav__link">
Version 0.29.1
</a>
</li>
<li class="md-nav__item">
<a href="../version0.29/" class="md-nav__link">
Version 0.29.0
</a>
</li>
<li class="md-nav__item md-nav__item--active md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_5_6" type="checkbox" id="__nav_5_6" checked>
<label class="md-nav__link" for="__nav_5_6">
Earlier releases
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Earlier releases" data-md-level="2">
<label class="md-nav__title" for="__nav_5_6">
<span class="md-nav__icon md-icon"></span>
Earlier releases
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../version0.27/" class="md-nav__link">
Version 0.27.1
</a>
</li>
<li class="md-nav__item">
<a href="../version0.26/" class="md-nav__link">
Version 0.26.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.25/" class="md-nav__link">
Version 0.25.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.24/" class="md-nav__link">
Version 0.24.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.23/" class="md-nav__link">
Version 0.23.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.22/" class="md-nav__link">
Version 0.22.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.21/" class="md-nav__link">
Version 0.21.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.20/" class="md-nav__link">
Version 0.20.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.19/" class="md-nav__link">
Version 0.19.0
</a>
</li>
<li class="md-nav__item md-nav__item--active">
<input class="md-nav__toggle md-toggle" data-md-toggle="toc" type="checkbox" id="__toc">
<label class="md-nav__link md-nav__link--active" for="__toc">
Version 0.18.1
<span class="md-nav__icon md-icon"></span>
</label>
<a href="./" class="md-nav__link md-nav__link--active">
Version 0.18.1
</a>
<nav class="md-nav md-nav--secondary" aria-label="On this page...">
<label class="md-nav__title" for="__toc">
<span class="md-nav__icon md-icon"></span>
On this page...
</label>
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
<li class="md-nav__item">
<a href="#features-and-changes" class="md-nav__link">
Features and changes
</a>
<nav class="md-nav" aria-label="Features and changes">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#binaries-and-supported-environments" class="md-nav__link">
Binaries and supported environments
</a>
</li>
<li class="md-nav__item">
<a href="#technical-preview-of-jitserver-technology" class="md-nav__link">
Technical preview of JITServer technology
</a>
</li>
<li class="md-nav__item">
<a href="#jextract-now-available-on-macos-for-openjdk-version-8" class="md-nav__link">
jextract now available on macOS for OpenJDK version 8
</a>
</li>
<li class="md-nav__item">
<a href="#new-shared-classes-cache-suboption-to-turn-off-timestamp-checking" class="md-nav__link">
New shared-classes cache suboption to turn off timestamp checking
</a>
</li>
<li class="md-nav__item">
<a href="#removal-of-restriction-on-layered-shared-cache" class="md-nav__link">
Removal of restriction on layered shared cache
</a>
</li>
<li class="md-nav__item">
<a href="#-xmso-1-mb-minimum-value-on-zos-64-bit" class="md-nav__link">
-Xmso 1 MB minimum value on z/OS 64-bit
</a>
</li>
<li class="md-nav__item">
<a href="#jstat-new-java-statistics-monitoring-tool" class="md-nav__link">
jstat: new Java statistics monitoring tool
</a>
</li>
<li class="md-nav__item">
<a href="#-xxtransparenthugepage-is-enabled-by-default-on-more-linux-systems" class="md-nav__link">
-XX:+TransparentHugePage is enabled by default on more Linux systems
</a>
</li>
<li class="md-nav__item">
<a href="#new-exit-dump-agent-and-exitonoutofmemoryerror-option" class="md-nav__link">
New exit dump agent and ExitOnOutOfMemoryError option
</a>
</li>
<li class="md-nav__item">
<a href="#ludcl-caching-enabled-by-default" class="md-nav__link">
LUDCL caching enabled by default
</a>
</li>
<li class="md-nav__item">
<a href="#terabytes-suffix-support-for-x-and-xx-options-that-take-a-size" class="md-nav__link">
Terabytes suffix support for -X and -XX options that take a size
</a>
</li>
<li class="md-nav__item">
<a href="#improved-support-for-pause-less-garbage-collection" class="md-nav__link">
Improved support for pause-less garbage collection
</a>
</li>
<li class="md-nav__item">
<a href="#-xgcnoconcurrentscavenge-option" class="md-nav__link">
-Xgc:noConcurrentScavenge option
</a>
</li>
<li class="md-nav__item">
<a href="#support-for-openjdk-hotspot-options" class="md-nav__link">
Support for OpenJDK HotSpot options
</a>
</li>
<li class="md-nav__item">
<a href="#shared-classes-cache-suboptions-for-layered-caches-no-longer-experimental" class="md-nav__link">
Shared classes cache suboptions for layered caches no longer experimental
</a>
</li>
<li class="md-nav__item">
<a href="#-djavalangstringsubstringnocopy-option" class="md-nav__link">
-Djava.lang.string.substring.nocopy option
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#full-release-information" class="md-nav__link">
Full release information
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../version0.17/" class="md-nav__link">
Version 0.17.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.16/" class="md-nav__link">
Version 0.16.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.15/" class="md-nav__link">
Version 0.15.1
</a>
</li>
<li class="md-nav__item">
<a href="../version0.14/" class="md-nav__link">
Version 0.14.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.13/" class="md-nav__link">
Version 0.13.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.12/" class="md-nav__link">
Version 0.12.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.11/" class="md-nav__link">
Version 0.11.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.10/" class="md-nav__link">
Version 0.10.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.9/" class="md-nav__link">
Version 0.9.0
</a>
</li>
<li class="md-nav__item">
<a href="../version0.8/" class="md-nav__link">
Version 0.8.0
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../configuring/" class="md-nav__link">
Configuring your system
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7" type="checkbox" id="__nav_7" >
<label class="md-nav__link" for="__nav_7">
Memory management
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Memory management" data-md-level="1">
<label class="md-nav__title" for="__nav_7">
<span class="md-nav__icon md-icon"></span>
Memory management
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../allocation/" class="md-nav__link">
Heap allocation
</a>
</li>
<li class="md-nav__item">
<a href="../gc_overview/" class="md-nav__link">
Garbage Collection (GC)
</a>
</li>
<li class="md-nav__item">
<a href="../gc/" class="md-nav__link">
GC policies
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_7_4" type="checkbox" id="__nav_7_4" >
<label class="md-nav__link" for="__nav_7_4">
Troubleshooting GC
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Troubleshooting GC" data-md-level="2">
<label class="md-nav__title" for="__nav_7_4">
<span class="md-nav__icon md-icon"></span>
Troubleshooting GC
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../vgclog/" class="md-nav__link">
Verbose GC logs
</a>
</li>
<li class="md-nav__item">
<a href="../vgclog_examples/" class="md-nav__link">
Log examples
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../jit/" class="md-nav__link">
JIT Compiler
</a>
</li>
<li class="md-nav__item">
<a href="../jitserver/" class="md-nav__link">
JITServer technology
</a>
</li>
<li class="md-nav__item">
<a href="../jitserver_tuning/" class="md-nav__link">
JITServer tuning
</a>
</li>
<li class="md-nav__item">
<a href="../aot/" class="md-nav__link">
AOT Compiler
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_12" type="checkbox" id="__nav_12" >
<label class="md-nav__link" for="__nav_12">
Class data sharing
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Class data sharing" data-md-level="1">
<label class="md-nav__title" for="__nav_12">
<span class="md-nav__icon md-icon"></span>
Class data sharing
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../shrc/" class="md-nav__link">
Introduction
</a>
</li>
<li class="md-nav__item">
<a href="../shrc_diag_util/" class="md-nav__link">
Diagnosing problems
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../attachapi/" class="md-nav__link">
Java Attach API
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_14" type="checkbox" id="__nav_14" >
<label class="md-nav__link" for="__nav_14">
Diagnostics
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Diagnostics" data-md-level="1">
<label class="md-nav__title" for="__nav_14">
<span class="md-nav__icon md-icon"></span>
Diagnostics
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../diag_overview/" class="md-nav__link">
Overview
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_14_2" type="checkbox" id="__nav_14_2" >
<label class="md-nav__link" for="__nav_14_2">
Dumps
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Dumps" data-md-level="2">
<label class="md-nav__title" for="__nav_14_2">
<span class="md-nav__icon md-icon"></span>
Dumps
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../dump_javadump/" class="md-nav__link">
Java dump
</a>
</li>
<li class="md-nav__item">
<a href="../dump_heapdump/" class="md-nav__link">
Heap dump
</a>
</li>
<li class="md-nav__item">
<a href="../dump_systemdump/" class="md-nav__link">
System dump
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_14_3" type="checkbox" id="__nav_14_3" >
<label class="md-nav__link" for="__nav_14_3">
Tools
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Tools" data-md-level="2">
<label class="md-nav__title" for="__nav_14_3">
<span class="md-nav__icon md-icon"></span>
Tools
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../tool_jextract/" class="md-nav__link">
Dump extractor
</a>
</li>
<li class="md-nav__item">
<a href="../tool_jdmpview/" class="md-nav__link">
Dump viewer
</a>
</li>
<li class="md-nav__item">
<a href="../tool_traceformat/" class="md-nav__link">
Trace formatter
</a>
</li>
<li class="md-nav__item">
<a href="../tool_builder/" class="md-nav__link">
Option builder
</a>
</li>
<li class="md-nav__item">
<a href="../tool_jcmd/" class="md-nav__link">
Java command (jcmd) tool
</a>
</li>
<li class="md-nav__item">
<a href="../tool_jmap/" class="md-nav__link">
Java memory map (jmap) tool
</a>
</li>
<li class="md-nav__item">
<a href="../tool_jps/" class="md-nav__link">
Java process status (jps)
</a>
</li>
<li class="md-nav__item">
<a href="../tool_jstack/" class="md-nav__link">
Java stack (jstack) tool
</a>
</li>
<li class="md-nav__item">
<a href="../tool_jstat/" class="md-nav__link">
Java statistics monitoring (jstat) tool
</a>
</li>
<li class="md-nav__item">
<a href="../tool_migration/" class="md-nav__link">
Switching to OpenJ9
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_14_4" type="checkbox" id="__nav_14_4" >
<label class="md-nav__link" for="__nav_14_4">
Interfaces
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Interfaces" data-md-level="2">
<label class="md-nav__title" for="__nav_14_4">
<span class="md-nav__icon md-icon"></span>
Interfaces
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../interface_jvmti/" class="md-nav__link">
JVMTI
</a>
</li>
<li class="md-nav__item">
<a href="../interface_dtfj/" class="md-nav__link">
DTFJ
</a>
</li>
<li class="md-nav__item">
<a href="../interface_lang_management/" class="md-nav__link">
Language Management
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_15" type="checkbox" id="__nav_15" >
<label class="md-nav__link" for="__nav_15">
Command-line options
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Command-line options" data-md-level="1">
<label class="md-nav__title" for="__nav_15">
<span class="md-nav__icon md-icon"></span>
Command-line options
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../cmdline_specifying/" class="md-nav__link">
Specifying options
</a>
</li>
<li class="md-nav__item">
<a href="../cmdline_general/" class="md-nav__link">
Standard options
</a>
</li>
<li class="md-nav__item">
<a href="../cmdline_migration/" class="md-nav__link">
Switching to OpenJ9
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_15_4" type="checkbox" id="__nav_15_4" >
<label class="md-nav__link" for="__nav_15_4">
System property options
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="System property options" data-md-level="2">
<label class="md-nav__title" for="__nav_15_4">
<span class="md-nav__icon md-icon"></span>
System property options
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../d_jvm_commands/" class="md-nav__link">
Using System properties
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmenableclasscaching/" class="md-nav__link">
-Dcom.ibm.enableClassCaching
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmenablelegacydumpsecurity/" class="md-nav__link">
-Dcom.ibm.enableLegacyDumpSecurity
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmenablelegacylogsecurity/" class="md-nav__link">
-Dcom.ibm.enableLegacyLogSecurity
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmenablelegacytracesecurity/" class="md-nav__link">
-Dcom.ibm.enableLegacyTraceSecurity
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmgpudisable/" class="md-nav__link">
-Dcom.ibm.gpu.disable
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmgpuenable/" class="md-nav__link">
-Dcom.ibm.gpu.enable
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmgpuverbose/" class="md-nav__link">
-Dcom.ibm.gpu.verbose
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmlangmanagementosmxbeaniscputime100ns/" class="md-nav__link">
-Dcom.ibm.lang.management.OperatingSystemMXBean.isCpuTime100ns
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmlangmanagementverbose/" class="md-nav__link">
-Dcom.ibm.lang.management.verbose
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmotisharedsharedclassglobalfilterclass/" class="md-nav__link">
-Dcom.ibm.oti.shared.SharedClassGlobalFilterClass
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmtoolsattachcommand_timeout/" class="md-nav__link">
-Dcom.ibm.tools.attach.command_timeout
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmtoolsattachdirectory/" class="md-nav__link">
-Dcom.ibm.tools.attach.directory
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmtoolsattachdisplayname/" class="md-nav__link">
-Dcom.ibm.tools.attach.displayName
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmtoolsattachenable/" class="md-nav__link">
-Dcom.ibm.tools.attach.enable
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmtoolsattachid/" class="md-nav__link">
-Dcom.ibm.tools.attach.id
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmtoolsattachlogging/" class="md-nav__link">
-Dcom.ibm.tools.attach.logging
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmtoolsattachlogname/" class="md-nav__link">
-Dcom.ibm.tools.attach.log.name
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmtoolsattachshutdown_timeout/" class="md-nav__link">
-Dcom.ibm.tools.attach.shutdown_timeout
</a>
</li>
<li class="md-nav__item">
<a href="../dcomibmtoolsattachtimeout/" class="md-nav__link">
-Dcom.ibm.tools.attach.timeout
</a>
</li>
<li class="md-nav__item">
<a href="../dfileencoding/" class="md-nav__link">
-Dfile.encoding
</a>
</li>
<li class="md-nav__item">
<a href="../djavacompiler/" class="md-nav__link">
-Djava.compiler
</a>
</li>
<li class="md-nav__item">
<a href="../djavalangstringsubstringnocopy/" class="md-nav__link">
-Djava.lang.string.substring.nocopy
</a>
</li>
<li class="md-nav__item">
<a href="../djavalangstringbuffergrowaggressively/" class="md-nav__link">
-Djava.lang.stringBuffer.growAggressively
</a>
</li>
<li class="md-nav__item">
<a href="../djdknativecbc/" class="md-nav__link">
-Djdk.nativeCBC
</a>
</li>
<li class="md-nav__item">
<a href="../djdknativechacha20/" class="md-nav__link">
-Djdk.nativeChaCha20
</a>
</li>
<li class="md-nav__item">
<a href="../djdknativecrypto/" class="md-nav__link">
-Djdk.nativeCrypto
</a>
</li>
<li class="md-nav__item">
<a href="../djdknativedigest/" class="md-nav__link">
-Djdk.nativeDigest
</a>
</li>
<li class="md-nav__item">
<a href="../djdknativegcm/" class="md-nav__link">
-Djdk.nativeGCM
</a>
</li>
<li class="md-nav__item">
<a href="../djdknativersa/" class="md-nav__link">
-Djdk.nativeRSA
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_15_5" type="checkbox" id="__nav_15_5" >
<label class="md-nav__link" for="__nav_15_5">
JVM -X options
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="JVM -X options" data-md-level="2">
<label class="md-nav__title" for="__nav_15_5">
<span class="md-nav__icon md-icon"></span>
JVM -X options
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../x_jvm_commands/" class="md-nav__link">
Using -X options
</a>
</li>
<li class="md-nav__item">
<a href="../x/" class="md-nav__link">
-X
</a>
</li>
<li class="md-nav__item">
<a href="../xaggressive/" class="md-nav__link">
-Xaggressive
</a>
</li>
<li class="md-nav__item">
<a href="../xalwaysclassgc/" class="md-nav__link">
-Xalwaysclassgc
</a>
</li>
<li class="md-nav__item">
<a href="../xaot/" class="md-nav__link">
-Xaot
</a>
</li>
<li class="md-nav__item">
<a href="../xargencoding/" class="md-nav__link">
-Xargencoding
</a>
</li>
<li class="md-nav__item">
<a href="../xbootclasspath/" class="md-nav__link">
-Xbootclasspath
</a>
</li>
<li class="md-nav__item">
<a href="../xceehdlr/" class="md-nav__link">
-XCEEHDLR
</a>
</li>
<li class="md-nav__item">
<a href="../xcheck/" class="md-nav__link">
-Xcheck
</a>
</li>
<li class="md-nav__item">
<a href="../xclassgc/" class="md-nav__link">
-Xclassgc
</a>
</li>
<li class="md-nav__item">
<a href="../xcodecache/" class="md-nav__link">
-Xcodecache
</a>
</li>
<li class="md-nav__item">
<a href="../xcodecachetotal/" class="md-nav__link">
-Xcodecachetotal
</a>
</li>
<li class="md-nav__item">
<a href="../xcomp/" class="md-nav__link">
-Xcomp
</a>
</li>
<li class="md-nav__item">
<a href="../xcompactexplicitgc/" class="md-nav__link">
-Xcompactexplicitgc
</a>
</li>
<li class="md-nav__item">
<a href="../xcompactgc/" class="md-nav__link">
-Xcompactgc
</a>
</li>
<li class="md-nav__item">
<a href="../xcompilationthreads/" class="md-nav__link">
-XcompilationThreads
</a>
</li>
<li class="md-nav__item">
<a href="../xcompressedrefs/" class="md-nav__link">
-Xcompressedrefs
</a>
</li>
<li class="md-nav__item">
<a href="../xconcurrentbackground/" class="md-nav__link">
-Xconcurrentbackground
</a>
</li>
<li class="md-nav__item">
<a href="../xconcurrentlevel/" class="md-nav__link">
-Xconcurrentlevel
</a>
</li>
<li class="md-nav__item">
<a href="../xconcurrentslack/" class="md-nav__link">
-Xconcurrentslack
</a>
</li>
<li class="md-nav__item">
<a href="../xconmeter/" class="md-nav__link">
-Xconmeter
</a>
</li>
<li class="md-nav__item">
<a href="../xenableexcessivegc/" class="md-nav__link">
-Xdisableexcessivegc
</a>
</li>
<li class="md-nav__item">
<a href="../xenableexplicitgc/" class="md-nav__link">
-Xdisableexplicitgc
</a>
</li>
<li class="md-nav__item">
<a href="../xdisablejavadump/" class="md-nav__link">
-Xdisablejavadump
</a>
</li>
<li class="md-nav__item">
<a href="../xenablestringconstantgc/" class="md-nav__link">
-Xdisablestringconstantgc
</a>
</li>
<li class="md-nav__item">
<a href="../xdump/" class="md-nav__link">
-Xdump
</a>
</li>
<li class="md-nav__item">
<a href="../xenableexcessivegc/" class="md-nav__link">
-Xenableexcessivegc
</a>
</li>
<li class="md-nav__item">
<a href="../xenableexplicitgc/" class="md-nav__link">
-Xenableexplicitgc
</a>
</li>
<li class="md-nav__item">
<a href="../xenablestringconstantgc/" class="md-nav__link">
-Xenablestringconstantgc
</a>
</li>
<li class="md-nav__item">
<a href="../xfastresolve/" class="md-nav__link">
-Xfastresolve
</a>
</li>
<li class="md-nav__item">
<a href="../xfuture/" class="md-nav__link">
-Xfuture
</a>
</li>
<li class="md-nav__item">
<a href="../xgc/" class="md-nav__link">
-Xgc
</a>
</li>
<li class="md-nav__item">
<a href="../xgcsplitheap/" class="md-nav__link">
-Xgc:splitheap
</a>
</li>
<li class="md-nav__item">
<a href="../xgcmaxthreads/" class="md-nav__link">
-Xgcmaxthreads
</a>
</li>
<li class="md-nav__item">
<a href="../xgcpolicy/" class="md-nav__link">
-Xgcpolicy
</a>
</li>
<li class="md-nav__item">
<a href="../xgcthreads/" class="md-nav__link">
-Xgcthreads
</a>
</li>
<li class="md-nav__item">
<a href="../xgcworkpackets/" class="md-nav__link">
-Xgcworkpackets
</a>
</li>
<li class="md-nav__item">
<a href="../xint/" class="md-nav__link">
-Xint
</a>
</li>
<li class="md-nav__item">
<a href="../xss/" class="md-nav__link">
-Xiss
</a>
</li>
<li class="md-nav__item">
<a href="../xjit/" class="md-nav__link">
-Xjit
</a>
</li>
<li class="md-nav__item">
<a href="../xjni/" class="md-nav__link">
-Xjni
</a>
</li>
<li class="md-nav__item">
<a href="../xlinenumbers/" class="md-nav__link">
-Xlinenumbers
</a>
</li>
<li class="md-nav__item">
<a href="../xloa/" class="md-nav__link">
-Xloa
</a>
</li>
<li class="md-nav__item">
<a href="../xloaminimum/" class="md-nav__link">
-Xloainitial
</a>
</li>
<li class="md-nav__item">
<a href="../xloaminimum/" class="md-nav__link">
-Xloamaximum
</a>
</li>
<li class="md-nav__item">
<a href="../xloaminimum/" class="md-nav__link">
-Xloaminimum
</a>
</li>
<li class="md-nav__item">
<a href="../xlockreservation/" class="md-nav__link">
-XlockReservation
</a>
</li>
<li class="md-nav__item">
<a href="../xlockword/" class="md-nav__link">
-Xlockword
</a>
</li>
<li class="md-nav__item">
<a href="../xlog/" class="md-nav__link">
-Xlog
</a>
</li>
<li class="md-nav__item">
<a href="../xlp/" class="md-nav__link">
-Xlp
</a>
</li>
<li class="md-nav__item">
<a href="../xlpcodecache/" class="md-nav__link">
-Xlp:codecache
</a>
</li>
<li class="md-nav__item">
<a href="../xlpobjectheap/" class="md-nav__link">
-Xlp:objectheap
</a>
</li>
<li class="md-nav__item">
<a href="../xmine/" class="md-nav__link">
-Xmaxe
</a>
</li>
<li class="md-nav__item">
<a href="../xminf/" class="md-nav__link">
-Xmaxf
</a>
</li>
<li class="md-nav__item">
<a href="../xmint/" class="md-nav__link">
-Xmaxt
</a>
</li>
<li class="md-nav__item">
<a href="../xmca/" class="md-nav__link">
-Xmca
</a>
</li>
<li class="md-nav__item">
<a href="../xmca/" class="md-nav__link">
-Xmco
</a>
</li>
<li class="md-nav__item">
<a href="../xmcrs/" class="md-nav__link">
-Xmcrs
</a>
</li>
<li class="md-nav__item">
<a href="../xmine/" class="md-nav__link">
-Xmine
</a>
</li>
<li class="md-nav__item">
<a href="../xminf/" class="md-nav__link">
-Xminf
</a>
</li>
<li class="md-nav__item">
<a href="../xmint/" class="md-nav__link">
-Xmint
</a>
</li>
<li class="md-nav__item">
<a href="../xmn/" class="md-nav__link">
-Xmn
</a>
</li>
<li class="md-nav__item">
<a href="../xmn/" class="md-nav__link">
-Xmns
</a>
</li>
<li class="md-nav__item">
<a href="../xmn/" class="md-nav__link">
-Xmnx
</a>
</li>
<li class="md-nav__item">
<a href="../xmo/" class="md-nav__link">
-Xmo
</a>
</li>
<li class="md-nav__item">
<a href="../xmoi/" class="md-nav__link">
-Xmoi
</a>
</li>
<li class="md-nav__item">
<a href="../xmo/" class="md-nav__link">
-Xmos
</a>
</li>
<li class="md-nav__item">
<a href="../xmo/" class="md-nav__link">
-Xmox
</a>
</li>
<li class="md-nav__item">
<a href="../xmr/" class="md-nav__link">
-Xmr
</a>
</li>
<li class="md-nav__item">
<a href="../xmr/" class="md-nav__link">
-Xmrx
</a>
</li>
<li class="md-nav__item">
<a href="../xms/" class="md-nav__link">
-Xms
</a>
</li>
<li class="md-nav__item">
<a href="../xmso/" class="md-nav__link">
-Xmso
</a>
</li>
<li class="md-nav__item">
<a href="../xms/" class="md-nav__link">
-Xmx
</a>
</li>
<li class="md-nav__item">
<a href="../xaot/" class="md-nav__link">
-Xnoaot
</a>
</li>
<li class="md-nav__item">
<a href="../xclassgc/" class="md-nav__link">
-Xnoclassgc
</a>
</li>
<li class="md-nav__item">
<a href="../xcompactexplicitgc/" class="md-nav__link">
-Xnocompactexplicitgc
</a>
</li>
<li class="md-nav__item">
<a href="../xcompactgc/" class="md-nav__link">
-Xnocompactgc
</a>
</li>
<li class="md-nav__item">
<a href="../xcompressedrefs/" class="md-nav__link">
-Xnocompressedrefs
</a>
</li>
<li class="md-nav__item">
<a href="../xjit/" class="md-nav__link">
-Xnojit
</a>
</li>
<li class="md-nav__item">
<a href="../xlinenumbers/" class="md-nav__link">
-Xnolinenumbers
</a>
</li>
<li class="md-nav__item">
<a href="../xloa/" class="md-nav__link">
-Xnoloa
</a>
</li>
<li class="md-nav__item">
<a href="../xsigcatch/" class="md-nav__link">
-Xnosigcatch
</a>
</li>
<li class="md-nav__item">
<a href="../xsigchain/" class="md-nav__link">
-Xnosigchain
</a>
</li>
<li class="md-nav__item">
<a href="../xnumanone/" class="md-nav__link">
-Xnuma:none
</a>
</li>
<li class="md-nav__item">
<a href="../xoptionsfile/" class="md-nav__link">
-Xoptionsfile
</a>
</li>
<li class="md-nav__item">
<a href="../xquickstart/" class="md-nav__link">
-Xquickstart
</a>
</li>
<li class="md-nav__item">
<a href="../xrs/" class="md-nav__link">
-Xrs
</a>
</li>
<li class="md-nav__item">
<a href="../xsamplingexpirationtime/" class="md-nav__link">
-XsamplingExpirationTime
</a>
</li>
<li class="md-nav__item">
<a href="../xscdmx/" class="md-nav__link">
-Xscdmx
</a>
</li>
<li class="md-nav__item">
<a href="../xscminaot/" class="md-nav__link">
-Xscmaxaot
</a>
</li>
<li class="md-nav__item">
<a href="../xscminjitdata/" class="md-nav__link">
-Xscmaxjitdata
</a>
</li>
<li class="md-nav__item">
<a href="../xscminaot/" class="md-nav__link">
-Xscminaot
</a>
</li>
<li class="md-nav__item">
<a href="../xscminjitdata/" class="md-nav__link">
-Xscminjitdata
</a>
</li>
<li class="md-nav__item">
<a href="../xscmx/" class="md-nav__link">
-Xscmx
</a>
</li>
<li class="md-nav__item">
<a href="../xshareclasses/" class="md-nav__link">
-Xshareclasses
</a>
</li>
<li class="md-nav__item">
<a href="../xsigcatch/" class="md-nav__link">
-Xsigcatch
</a>
</li>
<li class="md-nav__item">
<a href="../xsigchain/" class="md-nav__link">
-Xsigchain
</a>
</li>
<li class="md-nav__item">
<a href="../xsignal/" class="md-nav__link">
-Xsignal
</a>
</li>
<li class="md-nav__item">
<a href="../xsoftmx/" class="md-nav__link">
-Xsoftmx
</a>
</li>
<li class="md-nav__item">
<a href="../xsoftrefthreshold/" class="md-nav__link">
-Xsoftrefthreshold
</a>
</li>
<li class="md-nav__item">
<a href="../xss/" class="md-nav__link">
-Xss
</a>
</li>
<li class="md-nav__item">
<a href="../xss/" class="md-nav__link">
-Xssi
</a>
</li>
<li class="md-nav__item">
<a href="../xsyslog/" class="md-nav__link">
-Xsyslog
</a>
</li>
<li class="md-nav__item">
<a href="../xtgc/" class="md-nav__link">
-Xtgc
</a>
</li>
<li class="md-nav__item">
<a href="../xthr/" class="md-nav__link">
-Xthr
</a>
</li>
<li class="md-nav__item">
<a href="../xtlhprefetch/" class="md-nav__link">
-XtlhPrefetch
</a>
</li>
<li class="md-nav__item">
<a href="../xtrace/" class="md-nav__link">
-Xtrace
</a>
</li>
<li class="md-nav__item">
<a href="../xtunevirtualized/" class="md-nav__link">
-Xtune:virtualized
</a>
</li>
<li class="md-nav__item">
<a href="../xverbosegclog/" class="md-nav__link">
-Xverbosegclog
</a>
</li>
<li class="md-nav__item">
<a href="../xverify/" class="md-nav__link">
-Xverify
</a>
</li>
<li class="md-nav__item">
<a href="../xzero/" class="md-nav__link">
-Xzero
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_15_6" type="checkbox" id="__nav_15_6" >
<label class="md-nav__link" for="__nav_15_6">
JVM -XX options
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="JVM -XX options" data-md-level="2">
<label class="md-nav__title" for="__nav_15_6">
<span class="md-nav__icon md-icon"></span>
JVM -XX options
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../xx_jvm_commands/" class="md-nav__link">
Using -XX options
</a>
</li>
<li class="md-nav__item">
<a href="../xxactiveprocessorcount/" class="md-nav__link">
-XXActiveProcessorCount
</a>
</li>
<li class="md-nav__item">
<a href="../xxadaptivegcthreading/" class="md-nav__link">
-XX:[+|-]AdaptiveGCThreading
</a>
</li>
<li class="md-nav__item">
<a href="../xxallowvmshutdown/" class="md-nav__link">
-XXallowvmshutdown
</a>
</li>
<li class="md-nav__item">
<a href="../xxalwayspretouch/" class="md-nav__link">
-XX:[+|-]AlwaysPreTouch
</a>
</li>
<li class="md-nav__item">
<a href="../xxclassrelationshipverifier/" class="md-nav__link">
-XX:[+|-]ClassRelationshipVerifier
</a>
</li>
<li class="md-nav__item">
<a href="../xxconcgcthreads/" class="md-nav__link">
-XX:ConcGCThreads
</a>
</li>
<li class="md-nav__item">
<a href="../xxcodecachetotal/" class="md-nav__link">
-XX:codecachetotal
</a>
</li>
<li class="md-nav__item">
<a href="../xxcompactstrings/" class="md-nav__link">
-XX:[+|-]CompactStrings
</a>
</li>
<li class="md-nav__item">
<a href="../xxdiagnosesynconvaluebasedclasses/" class="md-nav__link">
-XX:DiagnoseSyncOnValueBasedClasses
</a>
</li>
<li class="md-nav__item">
<a href="../xxdisableexplicitgc/" class="md-nav__link">
-XX:[+|-]DisableExplicitGC
</a>
</li>
<li class="md-nav__item">
<a href="../xxdisclaimjitscratch/" class="md-nav__link">
-XX:[+|-]DisclaimJitScratch
</a>
</li>
<li class="md-nav__item">
<a href="../xxenable3164interoperability/" class="md-nav__link">
-XX:[+|-]Enable3164Interoperability
</a>
</li>
<li class="md-nav__item">
<a href="../xxenablecpumonitor/" class="md-nav__link">
-XX:[+|-]EnableCPUMonitor
</a>
</li>
<li class="md-nav__item">
<a href="../xxensurehashed/" class="md-nav__link">
-XX:[+|-]EnsureHashed
</a>
</li>
<li class="md-nav__item">
<a href="../xxexitonoutofmemoryerror/" class="md-nav__link">
-XX:[+|-]ExitOnOutOfMemoryError
</a>
</li>
<li class="md-nav__item">
<a href="../xxgloballockreservation/" class="md-nav__link">
-XX:[+|-]GlobalLockReservation
</a>
</li>
<li class="md-nav__item">
<a href="../xxhandlesigxfsz/" class="md-nav__link">
-XX:[+|-]HandleSIGXFSZ
</a>
</li>
<li class="md-nav__item">
<a href="../xxhandlesigabrt/" class="md-nav__link">
-XX:[+|-]HandleSIGABRT
</a>
</li>
<li class="md-nav__item">
<a href="../xxheapdumponoutofmemory/" class="md-nav__link">
-XX:[+|-]HeapDumpOnOutOfMemory
</a>
</li>
<li class="md-nav__item">
<a href="../xxheapdumppath/" class="md-nav__link">
-XX:HeapDumpPath
</a>
</li>
<li class="md-nav__item">
<a href="../xxheapmanagementmxbeancompatibility/" class="md-nav__link">
-XX:[+|-]HeapManagementMXBeanCompatibility
</a>
</li>
<li class="md-nav__item">
<a href="../xxidletuningcompactonidle/" class="md-nav__link">
-XX:[+|-]IdleTuningCompactOnIdle
</a>
</li>
<li class="md-nav__item">
<a href="../xxidletuninggconidle/" class="md-nav__link">
-XX:[+|-]IdleTuningGcOnIdle
</a>
</li>
<li class="md-nav__item">
<a href="../xxidletuningminfreeheaponidle/" class="md-nav__link">
-XX:IdleTuningMinFreeHeapOnIdle
</a>
</li>
<li class="md-nav__item">
<a href="../xxidletuningminidlewaittime/" class="md-nav__link">
-XX:IdleTuningMinIdleWaitTime
</a>
</li>
<li class="md-nav__item">
<a href="../xxignoreunrecognizedvmoptions/" class="md-nav__link">
-XX:[+|-]IgnoreUnrecognizedVMOptions
</a>
</li>
<li class="md-nav__item">
<a href="../xxignoreunrecognizedxxcolonoptions/" class="md-nav__link">
-XX:[+|-]IgnoreUnrecognizedXXColonOptions
</a>
</li>
<li class="md-nav__item">
<a href="../xxinitialrampercentage/" class="md-nav__link">
-XX:InitialRAMPercentage
</a>
</li>
<li class="md-nav__item">
<a href="../xxinitialheapsize/" class="md-nav__link">
-XX:InitialHeapSize
</a>
</li>
<li class="md-nav__item">
<a href="../xxinterleavememory/" class="md-nav__link">
-XX:[+|-]InterleaveMemory
</a>
</li>
<li class="md-nav__item">
<a href="../xxjitinlinewatches/" class="md-nav__link">
-XX:[+|-]JITInlineWatches
</a>
</li>
<li class="md-nav__item">
<a href="../xxjitserveraddress/" class="md-nav__link">
-XX:JITServerAddress
</a>
</li>
<li class="md-nav__item">
<a href="../xxjitserverlocalsynccompiles/" class="md-nav__link">
-XX:[+|-]JITServerLocalSyncCompiles
</a>
</li>
<li class="md-nav__item">
<a href="../xxjitserverlogconnections/" class="md-nav__link">
-XX:[+|-]JITServerLogConnections
</a>
</li>
<li class="md-nav__item">
<a href="../xxjitserverport/" class="md-nav__link">
-XX:JITServerPort
</a>
</li>
<li class="md-nav__item">
<a href="../xxjitservershareromclasses/" class="md-nav__link">
-XX:JITServerShareROMClasses
</a>
</li>
<li class="md-nav__item">
<a href="../xxjitserversslcert/" class="md-nav__link">
-XX:JITServerSSLCert
</a>
</li>
<li class="md-nav__item">
<a href="../xxjitserversslcert/" class="md-nav__link">
-XX:JITServerSSLKey
</a>
</li>
<li class="md-nav__item">
<a href="../xxjitserversslcert/" class="md-nav__link">
-XX:JITServerSSLRootCerts
</a>
</li>
<li class="md-nav__item">
<a href="../xxjitservertimeout/" class="md-nav__link">
-XX:JITServerTimeout
</a>
</li>
<li class="md-nav__item">
<a href="../xxlazysymbolresolution/" class="md-nav__link">
-XX:[+|-]LazySymbolResolution
</a>
</li>
<li class="md-nav__item">
<a href="../xxlegacyxlogoption/" class="md-nav__link">
-XX:[+|-]LegacyXLogOption
</a>
</li>
<li class="md-nav__item">
<a href="../xxmaxdirectmemorysize/" class="md-nav__link">
-XX:MaxDirectMemorySize
</a>
</li>
<li class="md-nav__item">
<a href="../xxinitialheapsize/" class="md-nav__link">
-XX:MaxHeapSize
</a>
</li>
<li class="md-nav__item">
<a href="../xxinitialrampercentage/" class="md-nav__link">
-XX:MaxRAMPercentage
</a>
</li>
<li class="md-nav__item">
<a href="../xxonoutofmemoryerror/" class="md-nav__link">
-XX:OnOutOfMemoryError
</a>
</li>
<li class="md-nav__item">
<a href="../xxoriginaljdk8heapsizecompatibilitymode/" class="md-nav__link">
-XX:[+|-]OriginalJDK8HeapSizeCompatibilityMode
</a>
</li>
<li class="md-nav__item">
<a href="../xxnosuballoc32bitmem/" class="md-nav__link">
-XXnosuballoc32bitmem
</a>
</li>
<li class="md-nav__item">
<a href="../xxpagealigndirectmemory/" class="md-nav__link">
-XX:[+|-]PageAlignDirectMemory
</a>
</li>
<li class="md-nav__item">
<a href="../xxparallelcmsthreads/" class="md-nav__link">
-XX:ParallelCMSThreads
</a>
</li>
<li class="md-nav__item">
<a href="../xxparallelgcmaxthreads/" class="md-nav__link">
-XX:ParallelGCMaxThreads
</a>
</li>
<li class="md-nav__item">
<a href="../xxparallelgcthreads/" class="md-nav__link">
-XX:ParallelGCThreads
</a>
</li>
<li class="md-nav__item">
<a href="../xxportablesharedcache/" class="md-nav__link">
-XX:[+|-]PortableSharedCache
</a>
</li>
<li class="md-nav__item">
<a href="../xxpositiveidentityhash/" class="md-nav__link">
-XX:[+|-]PositiveIdentityHash
</a>
</li>
<li class="md-nav__item">
<a href="../xxprintcodecache/" class="md-nav__link">
-XX:[+|-]PrintCodeCache
</a>
</li>
<li class="md-nav__item">
<a href="../xxprintflagsfinal/" class="md-nav__link">
-XX:[+|-]PrintFlagsFinal
</a>
</li>
<li class="md-nav__item">
<a href="../xxreadipinfoforras/" class="md-nav__link">
-XX:[+|-]ReadIPInfoForRAS
</a>
</li>
<li class="md-nav__item">
<a href="../xxreducecpumonitoroverhead/" class="md-nav__link">
-XX:[+|-]ReduceCPUMonitorOverhead
</a>
</li>
<li class="md-nav__item">
<a href="../xxrequirejitserver/" class="md-nav__link">
-XX:[+|-]RequireJITServer
</a>
</li>
<li class="md-nav__item">
<a href="../xxruntimeinstrumentation/" class="md-nav__link">
-XX:[+|-]RuntimeInstrumentation
</a>
</li>
<li class="md-nav__item">
<a href="../xxsethwprefetch/" class="md-nav__link">
-XXsetHWPrefetch
</a>
</li>
<li class="md-nav__item">
<a href="../xxshareanonymousclasses/" class="md-nav__link">
-XX:[+|-]ShareAnonymousClasses
</a>
</li>
<li class="md-nav__item">
<a href="../xxshareclassesenablebci/" class="md-nav__link">
-XX:ShareClassesDisableBCI
</a>
</li>
<li class="md-nav__item">
<a href="../xxshareclassesenablebci/" class="md-nav__link">
-XX:ShareClassesEnableBCI
</a>
</li>
<li class="md-nav__item">
<a href="../xxsharedcachehardlimit/" class="md-nav__link">
-XX:SharedCacheHardLimit
</a>
</li>
<li class="md-nav__item">
<a href="../xxshareunsafeclasses/" class="md-nav__link">
-XX:[+|-]ShareUnsafeClasses
</a>
</li>
<li class="md-nav__item">
<a href="../xxstacktraceinthrowable/" class="md-nav__link">
-XX:-StackTraceInThrowable
</a>
</li>
<li class="md-nav__item">
<a href="../xxtransparenthugepage/" class="md-nav__link">
-XX:[+|-]TransparentHugePage
</a>
</li>
<li class="md-nav__item">
<a href="../xxusecompressedoops/" class="md-nav__link">
-XX:[+|-]UseCompressedOops
</a>
</li>
<li class="md-nav__item">
<a href="../xxusecontainersupport/" class="md-nav__link">
-XX:[+|-]UseContainerSupport
</a>
</li>
<li class="md-nav__item">
<a href="../xxusegcstartuphints/" class="md-nav__link">
-XX:[+|-]UseGCStartupHints
</a>
</li>
<li class="md-nav__item">
<a href="../xxusejitserver/" class="md-nav__link">
-XX:[+|-]UseJITServer
</a>
</li>
<li class="md-nav__item">
<a href="../xxusenogc/" class="md-nav__link">
-XX:[+|-]UseNoGC
</a>
</li>
<li class="md-nav__item">
<a href="../xxutfcache/" class="md-nav__link">
-XX:[+|-]UTFCache
</a>
</li>
<li class="md-nav__item">
<a href="../xxverboseverification/" class="md-nav__link">
-XX:[+|-]VerboseVerification
</a>
</li>
<li class="md-nav__item">
<a href="../xxvmlockclassloader/" class="md-nav__link">
-XX:[+|-]VMLockClassLoader
</a>
</li>
</ul>
</nav>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_16" type="checkbox" id="__nav_16" >
<label class="md-nav__link" for="__nav_16">
Reference
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label=" Reference" data-md-level="1">
<label class="md-nav__title" for="__nav_16">
<span class="md-nav__icon md-icon"></span>
Reference
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../openj9_support/" class="md-nav__link">
Supported environments
</a>
</li>
<li class="md-nav__item">
<a href="../openj9_defaults/" class="md-nav__link">
Default settings
</a>
</li>
<li class="md-nav__item">
<a href="../openj9_signals/" class="md-nav__link">
Signal handling
</a>
</li>
<li class="md-nav__item">
<a href="../openj9_directories/" class="md-nav__link">
Directory conventions
</a>
</li>
<li class="md-nav__item">
<a href="../messages_intro/" class="md-nav__link">
OpenJ9 messages
</a>
</li>
<li class="md-nav__item">
<a href="../env_var/" class="md-nav__link">
Environment variables
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_17" type="checkbox" id="__nav_17" >
<label class="md-nav__link" for="__nav_17">
API documentation
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="API documentation" data-md-level="1">
<label class="md-nav__title" for="__nav_17">
<span class="md-nav__icon md-icon"></span>
API documentation
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../api-overview/" class="md-nav__link">
Overview
</a>
</li>
<li class="md-nav__item md-nav__item--nested">
<input class="md-nav__toggle md-toggle" data-md-toggle="__nav_17_2" type="checkbox" id="__nav_17_2" >
<label class="md-nav__link" for="__nav_17_2">
Java 8 API
<span class="md-nav__icon md-icon"></span>
</label>
<nav class="md-nav" aria-label="Java 8 API" data-md-level="2">
<label class="md-nav__title" for="__nav_17_2">
<span class="md-nav__icon md-icon"></span>
Java 8 API
</label>
<ul class="md-nav__list" data-md-scrollfix>
<li class="md-nav__item">
<a href="../api-conditionhandling/" class="md-nav__link">
Condition exception handling
</a>
</li>
<li class="md-nav__item">
<a href="../api-cuda/" class="md-nav__link">
CUDA4J
</a>
</li>
<li class="md-nav__item">
<a href="../api-daa/" class="md-nav__link">
Data access acceleration
</a>
</li>
<li class="md-nav__item">
<a href="../api-dtfj/" class="md-nav__link">
DTFJ
</a>
</li>
<li class="md-nav__item">
<a href="../api-gpu/" class="md-nav__link">
GPU
</a>
</li>
<li class="md-nav__item">
<a href="../api-jvm/" class="md-nav__link">
JVM diagnostic utilities
</a>
</li>
<li class="md-nav__item">
<a href="../api-langmgmt/" class="md-nav__link">
Monitoring and management
</a>
</li>
<li class="md-nav__item">
<a href="../api-shrc/" class="md-nav__link">
Shared classes
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../api-jdk11/" class="md-nav__link">
Java 11 API
</a>
</li>
<li class="md-nav__item">
<a href="../api-jdk17/" class="md-nav__link">
Java 17 API
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="../legal/" class="md-nav__link">
Legal
</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-sidebar md-sidebar--secondary" data-md-component="sidebar" data-md-type="toc" >
<div class="md-sidebar__scrollwrap">
<div class="md-sidebar__inner">
<nav class="md-nav md-nav--secondary" aria-label="On this page...">
<label class="md-nav__title" for="__toc">
<span class="md-nav__icon md-icon"></span>
On this page...
</label>
<ul class="md-nav__list" data-md-component="toc" data-md-scrollfix>
<li class="md-nav__item">
<a href="#features-and-changes" class="md-nav__link">
Features and changes
</a>
<nav class="md-nav" aria-label="Features and changes">
<ul class="md-nav__list">
<li class="md-nav__item">
<a href="#binaries-and-supported-environments" class="md-nav__link">
Binaries and supported environments
</a>
</li>
<li class="md-nav__item">
<a href="#technical-preview-of-jitserver-technology" class="md-nav__link">
Technical preview of JITServer technology
</a>
</li>
<li class="md-nav__item">
<a href="#jextract-now-available-on-macos-for-openjdk-version-8" class="md-nav__link">
jextract now available on macOS for OpenJDK version 8
</a>
</li>
<li class="md-nav__item">
<a href="#new-shared-classes-cache-suboption-to-turn-off-timestamp-checking" class="md-nav__link">
New shared-classes cache suboption to turn off timestamp checking
</a>
</li>
<li class="md-nav__item">
<a href="#removal-of-restriction-on-layered-shared-cache" class="md-nav__link">
Removal of restriction on layered shared cache
</a>
</li>
<li class="md-nav__item">
<a href="#-xmso-1-mb-minimum-value-on-zos-64-bit" class="md-nav__link">
-Xmso 1 MB minimum value on z/OS 64-bit
</a>
</li>
<li class="md-nav__item">
<a href="#jstat-new-java-statistics-monitoring-tool" class="md-nav__link">
jstat: new Java statistics monitoring tool
</a>
</li>
<li class="md-nav__item">
<a href="#-xxtransparenthugepage-is-enabled-by-default-on-more-linux-systems" class="md-nav__link">
-XX:+TransparentHugePage is enabled by default on more Linux systems
</a>
</li>
<li class="md-nav__item">
<a href="#new-exit-dump-agent-and-exitonoutofmemoryerror-option" class="md-nav__link">
New exit dump agent and ExitOnOutOfMemoryError option
</a>
</li>
<li class="md-nav__item">
<a href="#ludcl-caching-enabled-by-default" class="md-nav__link">
LUDCL caching enabled by default
</a>
</li>
<li class="md-nav__item">
<a href="#terabytes-suffix-support-for-x-and-xx-options-that-take-a-size" class="md-nav__link">
Terabytes suffix support for -X and -XX options that take a size
</a>
</li>
<li class="md-nav__item">
<a href="#improved-support-for-pause-less-garbage-collection" class="md-nav__link">
Improved support for pause-less garbage collection
</a>
</li>
<li class="md-nav__item">
<a href="#-xgcnoconcurrentscavenge-option" class="md-nav__link">
-Xgc:noConcurrentScavenge option
</a>
</li>
<li class="md-nav__item">
<a href="#support-for-openjdk-hotspot-options" class="md-nav__link">
Support for OpenJDK HotSpot options
</a>
</li>
<li class="md-nav__item">
<a href="#shared-classes-cache-suboptions-for-layered-caches-no-longer-experimental" class="md-nav__link">
Shared classes cache suboptions for layered caches no longer experimental
</a>
</li>
<li class="md-nav__item">
<a href="#-djavalangstringsubstringnocopy-option" class="md-nav__link">
-Djava.lang.string.substring.nocopy option
</a>
</li>
</ul>
</nav>
</li>
<li class="md-nav__item">
<a href="#full-release-information" class="md-nav__link">
Full release information
</a>
</li>
</ul>
</nav>
</div>
</div>
</div>
<div class="md-content" data-md-component="content">
<article class="md-content__inner md-typeset">
<!--
* Copyright (c) 2017, 2022 IBM Corp. and others
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution and is available at
* https://www.eclipse.org/legal/epl-2.0/ or the Apache
* License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the
* following Secondary Licenses when the conditions for such
* availability set forth in the Eclipse Public License, v. 2.0
* are satisfied: GNU General Public License, version 2 with
* the GNU Classpath Exception [1] and GNU General Public
* License, version 2 with the OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] http://openjdk.java.net/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH
* Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
-->
<h1 id="whats-new-in-version-0181">What's new in version 0.18.1</h1>
<p>The following new features and notable changes since version 0.17.0 are included in this release:</p>
<ul>
<li><a href="#binaries-and-supported-environments">Binaries and supported environments</a></li>
<li><a href="#technical-preview-of-jitserver-technology">Technical preview of JITServer technology</a></li>
<li><a href="#jextract-now-available-on-macos-for-openjdk-version-8"><code>jextract</code> now available on macOS&reg; for OpenJDK version 8</a></li>
<li><a href="#new-shared-classes-cache-suboption-to-turn-off-timestamp-checking">New shared-classes cache suboption to turn off timestamp checking</a></li>
<li><a href="#removal-of-restriction-on-layered-shared-cache">Removal of restriction on layered shared cache</a></li>
<li><a href="#-xmso-1-mb-minimum-value-on-zos-64-bit"><code>-Xmso</code> 1 MB minimum value on z/OS&reg; 64-bit</a></li>
<li><a href="#jstat-new-java-statistics-monitoring-tool"><code>jstat</code>: new Java&trade; statistics monitoring tool</a></li>
<li><a href="#-xxtransparenthugepage-is-enabled-by-default-on-more-linux-systems"><code>-XX:+TransparentHugePage</code> is enabled by default on more Linux&reg; systems</a></li>
<li><a href="#new-exit-dump-agent-and-exitonoutofmemoryerror-option">New exit dump agent and <code>ExitOnOutOfMemoryError</code> option</a></li>
<li><a href="#ludcl-caching-enabled-by-default">LUDCL caching enabled by default</a></li>
<li><a href="#terabytes-suffix-support-for-x-and-xx-options-that-take-a-size">Terabytes suffix support for <code>-X</code> and <code>-XX</code> options that take a size</a></li>
<li><a href="#improved-support-for-pause-less-garbage-collection">Improved support for pause-less garbage collection</a></li>
<li><a href="#-xgcnoconcurrentscavenge-option"><code>-Xgc:noConcurrentScavenge</code> option</a></li>
<li><a href="#support-for-openjdk-hotspot-options">Support for OpenJDK HotSpot options</a></li>
<li><a href="#shared-classes-cache-suboptions-for-layered-caches-no-longer-experimental">Shared classes cache suboptions for layered caches no longer experimental</a></li>
<li><a href="#-djavalangstringsubstringnocopy-option"><code>-Djava.lang.string.substring.nocopy</code> option</a></li>
</ul>
<h2 id="features-and-changes">Features and changes</h2>
<h3 id="binaries-and-supported-environments">Binaries and supported environments</h3>
<p>OpenJ9 releases 0.18.0 and 0.18.1 support OpenJDK 8, 11, and 13. Binaries are available from the AdoptOpenJDK community at the following links:</p>
<ul>
<li><a href="https://adoptopenjdk.net/archive.html?variant=openjdk8&amp;jvmVariant=openj9">OpenJDK version 8</a></li>
<li><a href="https://adoptopenjdk.net/archive.html?variant=openjdk11&amp;jvmVariant=openj9">OpenJDK version 11</a></li>
<li><a href="https://adoptopenjdk.net/archive.html?variant=openjdk13&amp;jvmVariant=openj9">OpenJDK version 13</a></li>
</ul>
<p><span aria-hidden="true" class="twemoji note"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="m497.9 142.1-46.1 46.1c-4.7 4.7-12.3 4.7-17 0l-111-111c-4.7-4.7-4.7-12.3 0-17l46.1-46.1c18.7-18.7 49.1-18.7 67.9 0l60.1 60.1c18.8 18.7 18.8 49.1 0 67.9zM284.2 99.8 21.6 362.4.4 483.9c-2.9 16.4 11.4 30.6 27.8 27.8l121.5-21.3 262.6-262.6c4.7-4.7 4.7-12.3 0-17l-111-111c-4.8-4.7-12.4-4.7-17.1 0zM124.1 339.9c-5.5-5.5-5.5-14.3 0-19.8l154-154c5.5-5.5 14.3-5.5 19.8 0s5.5 14.3 0 19.8l-154 154c-5.5 5.5-14.3 5.5-19.8 0zM88 424h48v36.3l-64.5 11.3-31.1-31.1L51.7 376H88v48z"/></svg></span> <strong>Note:</strong> Binaries at AdoptOpenJDK that are labeled 0.18.1 include additional bug fixes. For more information, see the <a href="https://github.com/eclipse-openj9/openj9/blob/master/doc/release-notes/0.18/0.18.md">release notes</a>.</p>
<p>To learn more about support for OpenJ9 releases, including OpenJDK levels and platform support, see <a href="../openj9_support/">Supported environments</a>.</p>
<h3 id="technical-preview-of-jitserver-technology">Technical preview of JITServer technology</h3>
<p>A technical preview of JITServer technology is included in this release. It's currently available for OpenJDK 8 and OpenJDK 11 running on Linux on x86-64.</p>
<p>JITServer technology decouples the JIT compiler from the VM and lets the JIT compiler run remotely in its own process. This mechanism prevents your Java application suffering possible negative effects due to CPU and memory consumption caused by JIT compilation. This technology can improve quality of service, robustness, and even performance of Java applications. For more information, see <a href="../jitserver/">JITServer technology</a>.</p>
<h3 id="jextract-now-available-on-macos-for-openjdk-version-8"><code>jextract</code> now available on macOS for OpenJDK version 8</h3>
<p>The <a href="../tool_jextract/"><code>jextract</code> tool</a> is now available on macOS platforms (as well as AIX&reg; and Linux) for <em>all</em> current versions of OpenJDK: 8, 11, and 13.</p>
<h3 id="new-shared-classes-cache-suboption-to-turn-off-timestamp-checking">New shared-classes cache suboption to turn off timestamp checking</h3>
<p>You can set the <code>-Xshareclasses:noTimestampChecks</code> option to turn off timestamp checking in shared classes. For more information, see the <a href="../xshareclasses/#notimestampchecks">-Xshareclasses:noTimestampChecks</a> option.</p>
<h3 id="removal-of-restriction-on-layered-shared-cache">Removal of restriction on layered shared cache</h3>
<p>In the previous release, there is a restriction that the <a href="../interface_jvmti/#jvmtisharedcacheinfo-structure"><code>jvmtiSharedCacheInfo.isCorrupt</code></a> field and the <code>SharedClassCacheInfo.isCacheCorrupt()</code> method cannot detect a corrupted cache that has a layer number other than <code>0</code>. This restriction is now removed. See the <a href="../api-shrc/">Shared classes API documentation</a>. <!-- Link to API --></p>
<h3 id="-xmso-1-mb-minimum-value-on-zos-64-bit"><code>-Xmso</code> 1 MB minimum value on z/OS 64-bit</h3>
<p>On z/OS 64-bit, <a href="../xmso/"><code>-Xmso</code></a> has a 1 MB minimum value, to match the minimum stack space provided by the operating system. If you set a value smaller than 1 MB, the value is ignored.</p>
<h3 id="jstat-new-java-statistics-monitoring-tool"><code>jstat</code>: new Java statistics monitoring tool</h3>
<p>For compatibility with the HotSpot implementation, OpenJ9 now includes an independent implementation of the <code>jstat</code> tool for retrieving statistics on a VM. For more information, see <a href="../tool_jstat/">Java statistics monitoring tool</a>.</p>
<h3 id="-xxtransparenthugepage-is-enabled-by-default-on-more-linux-systems"><code>-XX:+TransparentHugePage</code> is enabled by default on more Linux systems</h3>
<p><a href="../xxtransparenthugepage/">-XX:+TransparentHugePage</a> is enabled by default on Linux systems for POWER&reg; and IBM Z&reg; as well as x86 systems. This option takes affect only when Transparent Huge Pages (THP) is set to <code>madvise</code> on your system. When Transparent Huge Pages are used, your application footprint might increase.</p>
<h3 id="new-exit-dump-agent-and-exitonoutofmemoryerror-option">New exit dump agent and <code>ExitOnOutOfMemoryError</code> option</h3>
<p>The new exit dump agent shuts down the VM when the specified event occurs. The exit agent is at priority level 0 and the tool agent has been moved to priority level 1 to aid in mimicking the behavior of HotSpot options. For more information about dump agents, see <a href="../xdump/#dump-agents"><code>-Xdump</code></a>.</p>
<p>OpenJ9 now supports the HotSpot option <a href="../xxexitonoutofmemoryerror/"><code>-XX:[+|-]ExitOnOutOfMemoryError</code></a>. You can set this option to have the VM shut down when a <code>java.lang.OutOfMemory</code> error is thrown by the VM or in Java code. The exit dump agent is used in the implementation of <code>-XX:[+|-]ExitOnOutOfMemoryError</code>.</p>
<h3 id="ludcl-caching-enabled-by-default">LUDCL caching enabled by default</h3>
<p>By caching the Latest User Defined Class Loader (LUDCL), Java applications that use deserialization extensively can see a performance improvement. This capability is controlled by the <a href="../dcomibmenableclasscaching/"><code>-Dcom.ibm.enableClassCaching</code></a> system property and is now enabled by default. This feature was disabled for the 0.17.0 release due to <a href="https://github.com/eclipse-openj9/openj9/issues/7332">issue #7332</a> which has now been resolved.</p>
<h3 id="terabytes-suffix-support-for-x-and-xx-options-that-take-a-size">Terabytes suffix support for <code>-X</code> and <code>-XX</code> options that take a size</h3>
<p>OpenJ9 now supports 't' and 'T' suffixes (indicating terabytes) for <code>-X</code> and <code>-XX</code> options that take a <code>&lt;size&gt;</code> parameter.</p>
<h3 id="improved-support-for-pause-less-garbage-collection">Improved support for pause-less garbage collection</h3>
<p>Support for Concurrent scavenge mode is now extended to macOS. For more information, see <a href="../xgc/#concurrentscavenge"><code>-Xgc:concurrentScavenge</code></a>.</p>
<h3 id="-xgcnoconcurrentscavenge-option"><code>-Xgc:noConcurrentScavenge</code> option</h3>
<p>The previously undocumented option <a href="../xgc/#noconcurrentscavenge"><code>-Xgc:noConcurrentScavenge</code></a> disables pause-less garbage collection.</p>
<h3 id="support-for-openjdk-hotspot-options">Support for OpenJDK HotSpot options</h3>
<p>For compatibility, the following OpenJDK HotSpot options are now supported by OpenJ9:</p>
<ul>
<li><a href="../xxparallelgcthreads/">-XX:ParallelGCThreads</a></li>
<li><a href="../xxconcgcthreads/">-XX:ConcGCThreads</a></li>
<li><a href="../xxparallelcmsthreads/">-XX:ParallelCMSThreads</a></li>
</ul>
<h3 id="shared-classes-cache-suboptions-for-layered-caches-no-longer-experimental">Shared classes cache suboptions for layered caches no longer experimental</h3>
<p>The suboptions for creating layered caches are no longer marked experimental.</p>
<p>The new options are:</p>
<ul>
<li><a href="../xshareclasses/#createlayer"><code>createLayer</code></a></li>
<li><a href="../xshareclasses/#layer"><code>layer=&lt;number&gt;</code></a> (see this section for more information about layered caches)</li>
<li><a href="../xshareclasses/#printtoplayerstats-cache-utility"><code>printTopLayerStats</code></a></li>
<li><a href="../xshareclasses/#destroyalllayers"><code>destroyAllLayers</code></a></li>
</ul>
<h3 id="-djavalangstringsubstringnocopy-option"><code>-Djava.lang.string.substring.nocopy</code> option</h3>
<p>The previously undocumented Java 8 option <a href="../djavalangstringsubstringnocopy/"><code>-Djava.lang.string.substring.nocopy=true</code></a> avoids String sharing by String.substring(), which is the same behavior as the Oracle HotSpot VM.</p>
<h2 id="full-release-information">Full release information</h2>
<p>To see a complete list of changes between Eclipse OpenJ9 version 0.17.0 and version 0.18.0 releases, see the <a href="https://github.com/eclipse-openj9/openj9/blob/master/doc/release-notes/0.18/0.18.md">Release notes</a>.</p>
<!-- ==== END OF TOPIC ==== version0.18.md ==== -->
</article>
</div>
</div>
</main>
<!--
* Copyright (c) 2017, 2022 IBM Corp. and others
*
* This program and the accompanying materials are made
* available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution and is available at
* https://www.eclipse.org/legal/epl-2.0/ or the Apache
* License, Version 2.0 which accompanies this distribution and
* is available at https://www.apache.org/licenses/LICENSE-2.0.
*
* This Source Code may also be made available under the
* following Secondary Licenses when the conditions for such
* availability set forth in the Eclipse Public License, v. 2.0
* are satisfied: GNU General Public License, version 2 with
* the GNU Classpath Exception [1] and GNU General Public
* License, version 2 with the OpenJDK Assembly Exception [2].
*
* [1] https://www.gnu.org/software/classpath/license.html
* [2] http://openjdk.java.net/legal/assembly-exception.html
*
* SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0 WITH
* Classpath-exception-2.0 OR LicenseRef-GPL-2.0 WITH Assembly-exception
-->
<footer class="md-footer">
<div class="md-footer-meta">
<!-- Add following links ...................................... -->
<div class="above-line">
<div class="above-line-links">
<div class="column">
<h3 >Docs</h3>
<span class="footer-link"><a href="/openj9/docs/openj9_newuser/" >New to OpenJ9?</a></span>
<span class="footer-link"><a href="/openj9/docs/introduction/">Getting started</a></span>
<span class="footer-link"><a href="/openj9/docs/cmdline_specifying/">Command-line options</a></span>
</div>
<div class="column">
<h3>Resources</h3>
<span class="footer-link"><a href="https://www.eclipse.org/openj9/about/" rel="noopener noreferrer" target="_blank">About</a></span>
<span class="footer-link"><a href="https://www.eclipse.org/openj9/performance/" rel="noopener noreferrer" target="_blank">Performance</a></span>
</div>
<div class="column">
<h3 >Community</h3>
<span class="footer-link"><a href="https://www.eclipse.org/openj9/news/" rel="noopener noreferrer" target="_blank">News</a></span>
<span class="footer-link"><a href="https://blog.openj9.org/" rel="noopener noreferrer" target="_blank">Blogs</a></span>
</div>
</div>
<div class="column-incubator">
<div class="arrange-column">
<h3 ><b>OpenJ9 is an Eclipse Incubator project</b></h3>
<a class="incubator-image" href="http://wiki.eclipse.org/Development_Resources/Process_Guidelines/What_is_Incubation" target="_blank"><img width="50px" src="../cr/incubator-logo.svg" alt="Eclipse Incubation"></a>
</div>
</div>
</div>
<div class="horizontal-line"></div>
<div class="below-line">
<span class="below-line-links"><a href="https://www.eclipse.org/" rel="noopener noreferrer" target="_blank">Eclipse Foundation Website </a></span>
<span class="below-line-links"><a href="https://www.eclipse.org/legal/privacy.php" rel="noopener noreferrer" target="_blank">Privacy Policy</a></span>
<span class="below-line-links"><a href="https://www.eclipse.org/legal/termsofuse.php" rel="noopener noreferrer" target="_blank">Terms of Use</a></span>
<span class="below-line-links"><a href="https://www.eclipse.org/legal/copyright.php" rel="noopener noreferrer" target="_blank">Copyright Agent</a></span>
<span class="below-line-links"><a href="https://www.eclipse.org/legal/" rel="noopener noreferrer" target="_blank">Legal</a></span>
<div class="below-line-social-media-icons">
<div class="md-footer-social">
<a href="https://github.com/eclipse-openj9/openj9" target="_blank" rel="noopener" title="OpenJ9 in GitHub" class="md-footer-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512"><path d="M165.9 397.4c0 2-2.3 3.6-5.2 3.6-3.3.3-5.6-1.3-5.6-3.6 0-2 2.3-3.6 5.2-3.6 3-.3 5.6 1.3 5.6 3.6zm-31.1-4.5c-.7 2 1.3 4.3 4.3 4.9 2.6 1 5.6 0 6.2-2s-1.3-4.3-4.3-5.2c-2.6-.7-5.5.3-6.2 2.3zm44.2-1.7c-2.9.7-4.9 2.6-4.6 4.9.3 2 2.9 3.3 5.9 2.6 2.9-.7 4.9-2.6 4.6-4.6-.3-1.9-3-3.2-5.9-2.9zM244.8 8C106.1 8 0 113.3 0 252c0 110.9 69.8 205.8 169.5 239.2 12.8 2.3 17.3-5.6 17.3-12.1 0-6.2-.3-40.4-.3-61.4 0 0-70 15-84.7-29.8 0 0-11.4-29.1-27.8-36.6 0 0-22.9-15.7 1.6-15.4 0 0 24.9 2 38.6 25.8 21.9 38.6 58.6 27.5 72.9 20.9 2.3-16 8.8-27.1 16-33.7-55.9-6.2-112.3-14.3-112.3-110.5 0-27.5 7.6-41.3 23.6-58.9-2.6-6.5-11.1-33.3 2.6-67.9 20.9-6.5 69 27 69 27 20-5.6 41.5-8.5 62.8-8.5s42.8 2.9 62.8 8.5c0 0 48.1-33.6 69-27 13.7 34.7 5.2 61.4 2.6 67.9 16 17.7 25.8 31.5 25.8 58.9 0 96.5-58.9 104.2-114.8 110.5 9.2 7.9 17 22.9 17 46.4 0 33.7-.3 75.4-.3 83.6 0 6.5 4.6 14.4 17.3 12.1C428.2 457.8 496 362.9 496 252 496 113.3 383.5 8 244.8 8zM97.2 352.9c-1.3 1-1 3.3.7 5.2 1.6 1.6 3.9 2.3 5.2 1 1.3-1 1-3.3-.7-5.2-1.6-1.6-3.9-2.3-5.2-1zm-10.8-8.1c-.7 1.3.3 2.9 2.3 3.9 1.6 1 3.6.7 4.3-.7.7-1.3-.3-2.9-2.3-3.9-2-.6-3.6-.3-4.3.7zm32.4 35.6c-1.6 1.3-1 4.3 1.3 6.2 2.3 2.3 5.2 2.6 6.5 1 1.3-1.3.7-4.3-1.3-6.2-2.2-2.3-5.2-2.6-6.5-1zm-11.4-14.7c-1.6 1-1.6 3.6 0 5.9 1.6 2.3 4.3 3.3 5.6 2.3 1.6-1.3 1.6-3.9 0-6.2-1.4-2.3-4-3.3-5.6-2z"/></svg>
</a>
<a href="https://openj9.slack.com" target="_blank" rel="noopener" title="OpenJ9 on Slack" class="md-footer-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>
</a>
<a href="https://twitter.com/openj9" target="_blank" rel="noopener" title="OpenJ9 on Twitter" class="md-footer-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M459.37 151.716c.325 4.548.325 9.097.325 13.645 0 138.72-105.583 298.558-298.558 298.558-59.452 0-114.68-17.219-161.137-47.106 8.447.974 16.568 1.299 25.34 1.299 49.055 0 94.213-16.568 130.274-44.832-46.132-.975-84.792-31.188-98.112-72.772 6.498.974 12.995 1.624 19.818 1.624 9.421 0 18.843-1.3 27.614-3.573-48.081-9.747-84.143-51.98-84.143-102.985v-1.299c13.969 7.797 30.214 12.67 47.431 13.319-28.264-18.843-46.781-51.005-46.781-87.391 0-19.492 5.197-37.36 14.294-52.954 51.655 63.675 129.3 105.258 216.365 109.807-1.624-7.797-2.599-15.918-2.599-24.04 0-57.828 46.782-104.934 104.934-104.934 30.213 0 57.502 12.67 76.67 33.137 23.715-4.548 46.456-13.32 66.599-25.34-7.798 24.366-24.366 44.833-46.132 57.827 21.117-2.273 41.584-8.122 60.426-16.243-14.292 20.791-32.161 39.308-52.628 54.253z"/></svg>
</a>
<a href="https://stackoverflow.com/search?q=OpenJ9" target="_blank" rel="noopener" title="OpenJ9 on StackOverflow" class="md-footer-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 384 512"><path d="M290.7 311 95 269.7 86.8 309l195.7 41zm51-87L188.2 95.7l-25.5 30.8 153.5 128.3zm-31.2 39.7L129.2 179l-16.7 36.5L293.7 300zM262 32l-32 24 119.3 160.3 32-24zm20.5 328h-200v39.7h200zm39.7 80H42.7V320h-40v160h359.5V320h-40z"/></svg>
</a>
</div>
</div>
</div>
<!-- End of added links........................................ -->
<!--
<div class="md-footer-social">
<a href="https://github.com/eclipse-openj9/openj9" target="_blank" rel="noopener" title="OpenJ9 in GitHub" class="md-footer-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 496 512"><path d="M165.9 397.4c0 2-2.3 3.6-5.2 3.6-3.3.3-5.6-1.3-5.6-3.6 0-2 2.3-3.6 5.2-3.6 3-.3 5.6 1.3 5.6 3.6zm-31.1-4.5c-.7 2 1.3 4.3 4.3 4.9 2.6 1 5.6 0 6.2-2s-1.3-4.3-4.3-5.2c-2.6-.7-5.5.3-6.2 2.3zm44.2-1.7c-2.9.7-4.9 2.6-4.6 4.9.3 2 2.9 3.3 5.9 2.6 2.9-.7 4.9-2.6 4.6-4.6-.3-1.9-3-3.2-5.9-2.9zM244.8 8C106.1 8 0 113.3 0 252c0 110.9 69.8 205.8 169.5 239.2 12.8 2.3 17.3-5.6 17.3-12.1 0-6.2-.3-40.4-.3-61.4 0 0-70 15-84.7-29.8 0 0-11.4-29.1-27.8-36.6 0 0-22.9-15.7 1.6-15.4 0 0 24.9 2 38.6 25.8 21.9 38.6 58.6 27.5 72.9 20.9 2.3-16 8.8-27.1 16-33.7-55.9-6.2-112.3-14.3-112.3-110.5 0-27.5 7.6-41.3 23.6-58.9-2.6-6.5-11.1-33.3 2.6-67.9 20.9-6.5 69 27 69 27 20-5.6 41.5-8.5 62.8-8.5s42.8 2.9 62.8 8.5c0 0 48.1-33.6 69-27 13.7 34.7 5.2 61.4 2.6 67.9 16 17.7 25.8 31.5 25.8 58.9 0 96.5-58.9 104.2-114.8 110.5 9.2 7.9 17 22.9 17 46.4 0 33.7-.3 75.4-.3 83.6 0 6.5 4.6 14.4 17.3 12.1C428.2 457.8 496 362.9 496 252 496 113.3 383.5 8 244.8 8zM97.2 352.9c-1.3 1-1 3.3.7 5.2 1.6 1.6 3.9 2.3 5.2 1 1.3-1 1-3.3-.7-5.2-1.6-1.6-3.9-2.3-5.2-1zm-10.8-8.1c-.7 1.3.3 2.9 2.3 3.9 1.6 1 3.6.7 4.3-.7.7-1.3-.3-2.9-2.3-3.9-2-.6-3.6-.3-4.3.7zm32.4 35.6c-1.6 1.3-1 4.3 1.3 6.2 2.3 2.3 5.2 2.6 6.5 1 1.3-1.3.7-4.3-1.3-6.2-2.2-2.3-5.2-2.6-6.5-1zm-11.4-14.7c-1.6 1-1.6 3.6 0 5.9 1.6 2.3 4.3 3.3 5.6 2.3 1.6-1.3 1.6-3.9 0-6.2-1.4-2.3-4-3.3-5.6-2z"/></svg>
</a>
<a href="https://openj9.slack.com" target="_blank" rel="noopener" title="OpenJ9 on Slack" class="md-footer-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path d="M94.12 315.1c0 25.9-21.16 47.06-47.06 47.06S0 341 0 315.1c0-25.9 21.16-47.06 47.06-47.06h47.06v47.06zm23.72 0c0-25.9 21.16-47.06 47.06-47.06s47.06 21.16 47.06 47.06v117.84c0 25.9-21.16 47.06-47.06 47.06s-47.06-21.16-47.06-47.06V315.1zm47.06-188.98c-25.9 0-47.06-21.16-47.06-47.06S139 32 164.9 32s47.06 21.16 47.06 47.06v47.06H164.9zm0 23.72c25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06H47.06C21.16 243.96 0 222.8 0 196.9s21.16-47.06 47.06-47.06H164.9zm188.98 47.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06s-21.16 47.06-47.06 47.06h-47.06V196.9zm-23.72 0c0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06V79.06c0-25.9 21.16-47.06 47.06-47.06 25.9 0 47.06 21.16 47.06 47.06V196.9zM283.1 385.88c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06-25.9 0-47.06-21.16-47.06-47.06v-47.06h47.06zm0-23.72c-25.9 0-47.06-21.16-47.06-47.06 0-25.9 21.16-47.06 47.06-47.06h117.84c25.9 0 47.06 21.16 47.06 47.06 0 25.9-21.16 47.06-47.06 47.06H283.1z"/></svg>
</a>
<a href="https://twitter.com/openj9" target="_blank" rel="noopener" title="OpenJ9 on Twitter" class="md-footer-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M459.37 151.716c.325 4.548.325 9.097.325 13.645 0 138.72-105.583 298.558-298.558 298.558-59.452 0-114.68-17.219-161.137-47.106 8.447.974 16.568 1.299 25.34 1.299 49.055 0 94.213-16.568 130.274-44.832-46.132-.975-84.792-31.188-98.112-72.772 6.498.974 12.995 1.624 19.818 1.624 9.421 0 18.843-1.3 27.614-3.573-48.081-9.747-84.143-51.98-84.143-102.985v-1.299c13.969 7.797 30.214 12.67 47.431 13.319-28.264-18.843-46.781-51.005-46.781-87.391 0-19.492 5.197-37.36 14.294-52.954 51.655 63.675 129.3 105.258 216.365 109.807-1.624-7.797-2.599-15.918-2.599-24.04 0-57.828 46.782-104.934 104.934-104.934 30.213 0 57.502 12.67 76.67 33.137 23.715-4.548 46.456-13.32 66.599-25.34-7.798 24.366-24.366 44.833-46.132 57.827 21.117-2.273 41.584-8.122 60.426-16.243-14.292 20.791-32.161 39.308-52.628 54.253z"/></svg>
</a>
<a href="https://stackoverflow.com/search?q=OpenJ9" target="_blank" rel="noopener" title="OpenJ9 on StackOverflow" class="md-footer-social__link">
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 384 512"><path d="M290.7 311 95 269.7 86.8 309l195.7 41zm51-87L188.2 95.7l-25.5 30.8 153.5 128.3zm-31.2 39.7L129.2 179l-16.7 36.5L293.7 300zM262 32l-32 24 119.3 160.3 32-24zm20.5 328h-200v39.7h200zm39.7 80H42.7V320h-40v160h359.5V320h-40z"/></svg>
</a>
</div>
-->
</div>
</footer>
</div>
<div class="md-dialog" data-md-component="dialog">
<div class="md-dialog__inner md-typeset"></div>
</div>
<script id="__config" type="application/json">{"base": "..", "features": [], "translations": {"clipboard.copy": "Copy to clipboard", "clipboard.copied": "Copied to clipboard", "search.config.lang": "en", "search.config.pipeline": "trimmer, stopWordFilter", "search.config.separator": "[\\s\\-]+", "search.placeholder": "Search", "search.result.placeholder": "Type to start searching", "search.result.none": "No matching documents", "search.result.one": "1 matching document", "search.result.other": "# matching documents", "search.result.more.one": "1 more on this page", "search.result.more.other": "# more on this page", "search.result.term.missing": "Missing"}, "search": "../assets/javascripts/workers/search.4fa0e4ee.min.js", "version": 2.0}</script>
<script src="../assets/javascripts/bundle.1d3bfcf1.min.js"></script>
<script src="../javascripts/oj9.js"></script>
</body>
</html>