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<p>I used the no instrumentation branch with the IntelliJ profiler.
Didn't see any performance issues.</p>
<p>If you are adding enough nodes while also having a lot of
stylesheets to arrive at a heap size of ~600MB, there is a
performance impact in general even without using this branch.</p>
<div class="moz-cite-prefix">On 06/02/2026 16:01, Andy Goryachev
wrote:<br>
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This is an interesting result, thanks for testing! It sort of
matches my result - not quite 10%, but then again it's not a
complete set of properties/classes. I wonder if doing this
trick for Region and Labeled should release even more memory.</div>
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Did you run the branch with no instrumentation and used
VisualVM? Did you notice any impact on performance?</div>
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Thanks!</div>
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-andy</div>
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<b>From: </b>Christopher Schnick <a class="moz-txt-link-rfc2396E" href="mailto:crschnick@xpipe.io"><crschnick@xpipe.io></a><br>
<b>Date: </b>Thursday, February 5, 2026 at 20:29<br>
<b>To: </b>Andy Goryachev <a class="moz-txt-link-rfc2396E" href="mailto:andy.goryachev@oracle.com"><andy.goryachev@oracle.com></a><br>
<b>Cc: </b>OpenJFX <a class="moz-txt-link-rfc2396E" href="mailto:openjfx-dev@openjdk.org"><openjfx-dev@openjdk.org></a><br>
<b>Subject: </b>[External] : Re: Experiment: Node properties<br>
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<p class="ms-outlook-mobile-reference-message skipProofing">I
tested it with our application that creates a lot of nodes,
and the heap was reduced by around 25-50MB on a ~600MB heap.
But that was with putting as much nodes as possible on the
screen.</p>
<p class="ms-outlook-mobile-reference-message skipProofing">So
yeah it's definitely nice to have if it doesn't introduce a
lot of other complexity and potential issues.</p>
<div class="moz-cite-prefix">On 05/02/2026 21:29, Andy Goryachev
wrote:</div>
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To take it further, decreasing the cost of rarely used
properties in the Node class (or the Node class hierarchy
should this idea gains traction) would make it possible to
add more convenience properties such as boundsOnScreen,
owningWindow, etc.</div>
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-andy</div>
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<b>From: </b>openjfx-dev <a
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<openjfx-dev-retn@openjdk.org></a> on behalf of
Andy Goryachev <a href="mailto:andy.goryachev@oracle.com"
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<andy.goryachev@oracle.com></a><br>
<b>Date: </b>Wednesday, February 4, 2026 at 13:17<br>
<b>To: </b>OpenJFX <a
href="mailto:openjfx-dev@openjdk.org"
class="moz-txt-link-rfc2396E"
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<openjfx-dev@openjdk.org></a><br>
<b>Subject: </b>Experiment: Node properties<br>
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I would like to share the results of a little experiment
involving optimization of storage of Node properties. The
basic idea is to create a compact fast map-like container
to hold the rarely instantiated properties in order to
reduce the application memory footprint.</div>
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The savings are not overwhelming, but not exactly zero. I
would imagine this optimization might be more interesting
in any resource constrained environment such as Android /
iOS / RaspberryPi. Please refer to [0] for the details.</div>
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I encourage you to try it with your application, to see
whether you notice any change in memory consumption and/or
performance. Let me know what you think!</div>
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Cheers,</div>
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-andy</div>
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<b>References</b></div>
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[0] <a
href="https://urldefense.com/v3/__https://github.com/andy-goryachev-oracle/Test/blob/main/doc/Experiments/NodeProperties.md__;!!ACWV5N9M2RV99hQ!KUAfcEsUwD1Nm7pkzJLJtwdpbpqI2T-46rvMVrfxUFaR6sizzAAMYZxWDvnr7_qJJylFQfIsOfOEEgGIYybK_ZWv$"
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data-outlook-id="217ca979-74ae-4107-9a0b-bf3cf23cb5ec"
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https://github.com/andy-goryachev-oracle/Test/blob/main/doc/Experiments/NodeProperties.md</a></div>
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