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#VMOptionsExplorer

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Chris Newland<p>VMOptionsExplorer, JEP tools, and JaCoLine have all been updated to support JDK24.</p><p>Options relating to HotSpot RTM (Restricted Transaction Memory) locking have been removed and an interesting new option -XX:+PrintMemoryMapAtExit has been added (will experiment with this and write up later).</p><p><a href="https://chriswhocodes.com/hotspot_option_differences.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">chriswhocodes.com/hotspot_opti</span><span class="invisible">on_differences.html</span></a></p><p><a href="https://jacoline.dev/inspect" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">jacoline.dev/inspect</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/VMOptionsExplorer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>VMOptionsExplorer</span></a> <a href="https://mastodon.social/tags/JaCoLine" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JaCoLine</span></a> <a href="https://mastodon.social/tags/java" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>java</span></a> <a href="https://mastodon.social/tags/HotSpot" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HotSpot</span></a> <a href="https://mastodon.social/tags/JVM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JVM</span></a> <a href="https://mastodon.social/tags/JEP" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JEP</span></a></p>
Chris Newland<p><a href="https://mastodon.social/tags/VMOptionsExplorer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>VMOptionsExplorer</span></a> updated to <a href="https://mastodon.social/tags/JDK" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JDK</span></a> 23 which removes -XX:+TraceICs (trace inline cache changes) and adds -XX:+UseZacas (use the <a href="https://mastodon.social/tags/RISCV" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RISCV</span></a> atomic CAS instructions) <a href="https://mastodon.social/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Java</span></a> <a href="https://mastodon.social/tags/JVM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JVM</span></a> <a href="https://chriswhocodes.com/vm-options-explorer.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">chriswhocodes.com/vm-options-e</span><span class="invisible">xplorer.html</span></a></p>
Chris Newland<p>Thanks for the mention!</p><p>Reasons you might want to follow me are:</p><p><a href="https://mastodon.social/tags/VMOptionsExplorer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>VMOptionsExplorer</span></a> - Learn about all the switches that control the JVM: <a href="https://chriswhocodes.com/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">chriswhocodes.com/</span><span class="invisible"></span></a> </p><p><a href="https://mastodon.social/tags/JaCoLine" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JaCoLine</span></a> - Java Command Line Inspector - check your Java command line works with later versions <a href="https://jacoline.dev/inspect" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">jacoline.dev/inspect</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/JEPSearch" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JEPSearch</span></a> - Check JEP activity <a href="https://chriswhocodes.com/jepsearch.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">chriswhocodes.com/jepsearch.ht</span><span class="invisible">ml</span></a></p><p><a href="https://mastodon.social/tags/ByteMe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ByteMe</span></a> - Explore Java bytecode <a href="https://byte-me.dev/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">byte-me.dev/</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/JITWatch" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JITWatch</span></a> - Understand JIT compiler decisions made by the JVM <a href="https://github.com/AdoptOpenJDK/jitwatch" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">github.com/AdoptOpenJDK/jitwat</span><span class="invisible">ch</span></a></p>
Chris Newland<p><a href="https://mastodon.social/tags/VMOptionsExplorer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>VMOptionsExplorer</span></a> updated to cover the <a href="https://mastodon.social/tags/JDK21" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JDK21</span></a> distros, upcoming <a href="https://mastodon.social/tags/JDK22" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JDK22</span></a> stuff, and new JDK-based <a href="https://mastodon.social/tags/GraalVM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>GraalVM</span></a> releases :) <a href="https://mastodon.social/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Java</span></a> <a href="https://mastodon.social/tags/CommandLine" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CommandLine</span></a> <a href="https://chriswhocodes.com/hotspot_option_differences.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">chriswhocodes.com/hotspot_opti</span><span class="invisible">on_differences.html</span></a></p>
Chris Newland<p>Updated <a href="https://mastodon.social/tags/VMOptionsExplorer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>VMOptionsExplorer</span></a> to the latest <span class="h-card"><a href="https://mastodon.social/@openjdk" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>openjdk</span></a></span> @graalvm and vendor releases.</p><p>See what changed between versions at <a href="https://chriswhocodes.com/hotspot_option_differences.html" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">chriswhocodes.com/hotspot_opti</span><span class="invisible">on_differences.html</span></a></p>
Chris Newland<p>Hey new Mastodon friends! Here's a little <a href="https://mastodon.social/tags/introduction" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>introduction</span></a> :)</p><p>* 25 years of <a href="https://mastodon.social/tags/Java" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Java</span></a>, mostly in realtime market data but also some fun R&amp;D stuff.</p><p>* Java Champion who loves digging deep into the <a href="https://mastodon.social/tags/JVM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JVM</span></a> and sharing what I learn.</p><p>* Creator of open source tools like <a href="https://mastodon.social/tags/JITWatch" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JITWatch</span></a>, <a href="https://mastodon.social/tags/VMOptionsExplorer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>VMOptionsExplorer</span></a>, <a href="https://mastodon.social/tags/JaCoLine" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JaCoLine</span></a>, <a href="https://mastodon.social/tags/JEPSearch" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JEPSearch</span></a> (<a href="https://chriswhocodes.com" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">chriswhocodes.com</span><span class="invisible"></span></a>)</p><p>* Co-wrote a book on Java Performance (Optimizing Java).</p><p>* Love retro hardware, synths, and the <a href="https://mastodon.social/tags/Demoscene" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Demoscene</span></a>!</p><p>Appreciate boosts to make new connections here!</p>
joschi<p>RT @chriswhocodes@twitter.com</p><p><a href="https://mastodon.social/tags/VMOptionsExplorer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>VMOptionsExplorer</span></a> now covers @bellsoftware@twitter.com Liberica <a href="https://mastodon.social/tags/JDK" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JDK</span></a>, @adoptium@twitter.com Temurin JDK, and Oracle JDK (@java@twitter.com) for all your <a href="https://mastodon.social/tags/JVM" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>JVM</span></a> option exploring needs! <a href="https://chriswhocodes.com/vm-options-explorer.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">chriswhocodes.com/vm-options-e</span><span class="invisible">xplorer.html</span></a></p><p>🐦🔗: <a href="https://twitter.com/chriswhocodes/status/1450933240110407684" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">twitter.com/chriswhocodes/stat</span><span class="invisible">us/1450933240110407684</span></a></p>