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I tried it, 99% of the heavy lift comes from FXML load.<br>
I have 80Kb of FXML files, nothing particularly big,<br>
I measured the laoding time on a 13900K CPU and it requires 1.8s.<br>
<br>
Once loaded, I don't know how this is possible, my apps sucks 100MB
more RAM but after the first load,<br>
opening/closing the tab pane is much faster.<br>
<br>
I sincerely can't understand how a tabpane can suck 100MB od RAM and
how 80Kb of FXML can require almoast 2 seconds to load<br>
on the world fastest consumer CPU (single thread).<br>
<br>
I see that there are dozens of similar threads on the internet so
this should be a known problem<br>
and at this point, I think that I'm out of luck.<br>
<br>
Thank you anyway,<br>
Davide<br>
<br>
<br>
<div class="moz-cite-prefix">Il 25/08/2023 23:55, Andy Goryachev ha
scritto:<br>
</div>
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<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16"">Another suggestion might be to load tabs
lazily. I don't think FXML "pre-loading" is possible.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16""><o:p>Â </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16"">-andy<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16""><o:p>Â </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16""><o:p>Â </o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16""><o:p>Â </o:p></span></p>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span
style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">Davide
Perini <a class="moz-txt-link-rfc2396E" href="mailto:perini.davide@dpsoftware.org"><perini.davide@dpsoftware.org></a><br>
<b>Date: </b>Friday, August 25, 2023 at 14:31<br>
<b>To: </b>Andy Goryachev
<a class="moz-txt-link-rfc2396E" href="mailto:andy.goryachev@oracle.com"><andy.goryachev@oracle.com></a>, <a class="moz-txt-link-abbreviated" href="mailto:openjfx-dev@openjdk.org">openjfx-dev@openjdk.org</a>
<a class="moz-txt-link-rfc2396E" href="mailto:openjfx-dev@openjdk.org"><openjfx-dev@openjdk.org></a><br>
<b>Subject: </b>[External] : Re: Preload fxml to avoid
slow show()<o:p></o:p></span></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:11.0pt">My tab pane is very complex with a
lot of tabs,
<br>
having an FXML is very welcomed.<br>
<br>
Thanks<br>
Davide<o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Il
25/08/2023 16:45, Andy Goryachev ha scritto:<o:p></o:p></span></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16 "">You can try creating the scene graph
programmatically, thus avoiding FXML entirely.</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16 "">Â </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16 "">-andy</span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16 "">Â </span><o:p></o:p></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Iosevka Fixed
SS16 "">Â </span><o:p></o:p></p>
<div style="border:none;border-top:solid #B5C4DF
1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span
style="font-size:12.0pt;color:black">From:
</span></b><span style="font-size:12.0pt;color:black">openjfx-dev
<a href="mailto:openjfx-dev-retn@openjdk.org"
moz-do-not-send="true">
<openjfx-dev-retn@openjdk.org></a> on behalf of
Davide Perini <a
href="mailto:perini.davide@dpsoftware.org"
moz-do-not-send="true">
<perini.davide@dpsoftware.org></a><br>
<b>Date: </b>Friday, August 25, 2023 at 00:45<br>
<b>To: </b><a href="mailto:openjfx-dev@openjdk.org"
moz-do-not-send="true" class="moz-txt-link-freetext">openjfx-dev@openjdk.org</a>
<a href="mailto:openjfx-dev@openjdk.org"
moz-do-not-send="true">
<openjfx-dev@openjdk.org></a><br>
<b>Subject: </b>Preload fxml to avoid slow show()</span><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt">Hi,<br>
I have a tabpane with 15 tabs, every tab has his own
controller and it's <br>
pretty crowded.<br>
<br>
On a 13900K CPU, show() method requires more than 750ms,<br>
this feels laggy...<br>
<br>
After the first show() call, loading the tab pane is
much faster...<br>
<br>
Is there a way to "preload" an fxml?<br>
<br>
I tried to show() and hide() it immediately and it seems
to help,<br>
but what is the best way to do it?<br>
<br>
Thanks<br>
Davide</span><o:p></o:p></p>
</div>
</blockquote>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p>Â </o:p></span></p>
</div>
</blockquote>
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