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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - [bisected] R9 290 low performance in Linux 4.7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97260#c28">Comment # 28</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - [bisected] R9 290 low performance in Linux 4.7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=97260">bug 97260</a>
from <span class="vcard"><a class="email" href="mailto:kai@dev.carbon-project.org" title="Kai <kai@dev.carbon-project.org>"> <span class="fn">Kai</span></a>
</span></b>
<pre>(In reply to Michel Dänzer from <a href="show_bug.cgi?id=97260#c27">comment #27</a>)
<span class="quote">> (In reply to Kai from <a href="show_bug.cgi?id=97260#c26">comment #26</a>)
> > (In reply to Alex Deucher from <a href="show_bug.cgi?id=97260#c25">comment #25</a>)
> > > Is anyone still having issues with vblank_mode=0?
> >
> > With or without Michel's patch
> > (<<a href="https://patchwork.freedesktop.org/patch/106274/">https://patchwork.freedesktop.org/patch/106274/</a>>), [...]
>
> My patch doesn't have any effect with vblank_mode=0, which is why Alex
> asked.</span >
Ah, ok. That wasn't clear to me.
<span class="quote">> However, if there are still issues with that, I'd like them to be
> tracked in a separate report, ideally with an independent bisection
> confirming they started with the same kernel change.</span >
For me it doesn't matter if I set vblank_mode=0 or not. With your patch applied
I'm getting 30 FPS in XCOM 2 either way (also doesn't matter if I enable VSync
in the game's options or not, though the FPS graph is smoother and closer to 30
FPS flat with VSync on).
This is with 4.7.2, LLVM r279473, Mesa a2ae67aa47 +
<<a href="https://patchwork.freedesktop.org/patch/106274/">https://patchwork.freedesktop.org/patch/106274/</a>> and otherwise the stack
described in <a href="show_bug.cgi?id=97260#c22">comment #22</a>.</pre>
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