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Hi,<br>
<br>
Yes, indeed - I actually tried disabling vsync and it rendered
blazing fast and out of control. :-) But I want vsync and it's okay
to be stuck at 60Hz. But even with vsync enabled draw shouldn't be
that long, should it? It appears as if it takes a long time to draw
with no room for more geometry or operations, although I suspect
this is not the case but something weird is going on with the buffer
swapping or similar. And especially since it sometimes drops down to
a short draw after a while.<br>
<br>
BTW, please sign your messages with your name, it doesn't show here
if coming via the old <a class="moz-txt-link-abbreviated" href="mailto:osg-users@lists.openscenegraph.org">osg-users@lists.openscenegraph.org</a> address,
nor does your e-mail address.<br>
<br>
Regards,<br>
Andreas<font size="2" color="black"><span
style="font-size:0.8em;color:black"><br>
<br>
</span></font><font size="2" color="black"><span
style="font-size:0.8em;color:black"></span></font>
<div class="moz-signature"><font size="2" color="black"><span
style="font-size:0.8em;color:black"><br>
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<div class="moz-cite-prefix">On 2020-08-13 14:01, OpenSceneGraph
Users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:mailman.9860.1597320120.3538.osg-users-openscenegraph.org@lists.openscenegraph.org">
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<p>Hi,</p>
<p>Frame rate stuck at 60Hz usually means vertical sync is on.</p>
<p id="reply-intro">On 2020-08-13 13:32, OpenSceneGraph Users
wrote:</p>
<blockquote type="cite" style="padding: 0 0.4em; border-left:
#1010ff 2px solid; margin: 0">
<div id="replybody1">
<div>Hi,<br>
<br>
It's been a while since I tested rendering performance on my
development machine and now I'm experiencing something
vaguely familiar and quite annoying. Even with a very simple
model, the statistics feature ('s') in the osgviewer
application (3.6.4) reports a draw process taking over 16ms
so that the rendering just barely makes it at 60Hz, see the
attached screenshot. Sometimes it drops down to a short draw
after a while, for no apparent reason, but more often it
stays this long.<br>
<br>
This makes me doubt any further performance investigations,
now knowing whether additional operations in a frame will
make draw go over the 16.7ms limit or not.<br>
<br>
I vaguely recognize this from way back but I can't remember
the cause, and I can't find anything about it in previous
osg-users discussions. It feels like it's waiting for buffer
swapping or something, and I wouldn't be surprised if it's
something obvious that I should know. Maybe it's just the
statistics reporting incorrectly? Does anyone recognize this
and do you have any suggestions? It works on my older laptop
but not on two of my desktop computers. My config below:<br>
<br>
Intel i7-4790K 4GHz<br>
16 GB RAM<br>
GeForce GTX 970 with latest 451.67 drivers<br>
Win10 Home<br>
OSG 3.6.4<br>
<br>
Regards,<br>
Andreas<span style="color: black; font-size: small;"><span
style="font-size: 0.8em; color: black;"><br>
<br>
</span></span></div>
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