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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 <crschnick@xpipe.io><br>
<b>Date: </b>Thursday, February 5, 2026 at 20:29<br>
<b>To: </b>Andy Goryachev <andy.goryachev@oracle.com><br>
<b>Cc: </b>OpenJFX <openjfx-dev@openjdk.org><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 href="mailto:openjfx-dev-retn@openjdk.org" class="moz-txt-link-rfc2396E" data-outlook-id="3b770fde-e371-4289-9eb7-c423e20377d5">
<openjfx-dev-retn@openjdk.org></a> on behalf of Andy Goryachev <a href="mailto:andy.goryachev@oracle.com" class="moz-txt-link-rfc2396E" data-outlook-id="b13629a5-d53d-4292-8126-cd753c913a4e">
<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" data-outlook-id="0758fa69-a8a8-47ee-bdd9-d9f1a4fbf191">
<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$" class="moz-txt-link-freetext" data-outlook-id="217ca979-74ae-4107-9a0b-bf3cf23cb5ec">
https://github.com/andy-goryachev-oracle/Test/blob/main/doc/Experiments/NodeProperties.md</a></div>
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