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<p>Which build of JDK 24 (or mainline) are you using? There's a
recent change that turns on -XX:+AOTClassLinking automatically to
take advantage of all JEP 483 optimizations (including the
AOT-linking of lambdas)<br>
</p>
<p><a class="moz-txt-link-freetext" href="https://bugs.openjdk.org/browse/JDK-8348752">https://bugs.openjdk.org/browse/JDK-8348752</a><br>
</p>
<p>If you're using an older JDK 24 build (earlier than JDK 24-b35),
you might need to add -XX:+AOTClassLinking explicitly.</p>
<p>A good way for checking is with -Xlog:cds,class+load and see how
many classes you are loading from CDS vs dynamically parsed.<br>
</p>
<p>Thanks</p>
<p>- Ioi<br>
</p>
<div class="moz-cite-prefix">On 2/13/25 7:12 AM, Charles Oliver
Nutter wrote:<br>
</div>
<blockquote type="cite" cite="mid:CAE-f1xQQjWb05q8ixjuaEuReHB0-2MO8Zgq2XHQUe7fNC4Uxhw@mail.gmail.com">
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<div>I figured folks here would be interested to see this
experiment using AOTCache with JRuby.</div>
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</div>
<div><a href="https://gist.github.com/headius/1a5cfbc91ed8bacd194f1c592a90c275" moz-do-not-send="true" class="moz-txt-link-freetext">https://gist.github.com/headius/1a5cfbc91ed8bacd194f1c592a90c275</a></div>
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<div>I just test the 'hello world' scenario that represents our
baseline startup, but AOT caching manages to beat the
automatic AppCDS startup by a bit. More/better training might
help here I'm guessing?</div>
<div><br>
</div>
<div>This is from the JRuby 10 branch (10-dev) on <a href="https://github.com/jruby/jruby.git" moz-do-not-send="true" class="moz-txt-link-freetext">https://github.com/jruby/jruby.git</a>
if anyone wants to play with it. Just run `./mvnw` and then
`bin/ruby` will work. We recently added support for
AutoCreateSharedArchive so it will use CDS by default. Pass
--nocache to disable that behavior.</div>
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<div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">
<div dir="ltr"><b>Charles Oliver Nutter</b>
<div><i>Architect and Technologist</i></div>
<div>Headius Enterprises</div>
<a href="https://www.headius.com" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">https://www.headius.com</a>
<div>
<div><a href="mailto:headius@headius.com" target="_blank" moz-do-not-send="true" class="moz-txt-link-freetext">headius@headius.com</a></div>
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