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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Sudden framerate drops in multiple games"
href="https://bugs.freedesktop.org/show_bug.cgi?id=83436#c24">Comment # 24</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Sudden framerate drops in multiple games"
href="https://bugs.freedesktop.org/show_bug.cgi?id=83436">bug 83436</a>
from <span class="vcard"><a class="email" href="mailto:Dieter@nuetzel-hh.de" title="Dieter Nützel <Dieter@nuetzel-hh.de>"> <span class="fn">Dieter Nützel</span></a>
</span></b>
<pre>(In reply to <a href="show_bug.cgi?id=83436#c23">comment #23</a>)
<span class="quote">> (In reply to <a href="show_bug.cgi?id=83436#c22">comment #22</a>)
> > (In reply to <a href="show_bug.cgi?id=83436#c21">comment #21</a>)
> > > (In reply to <a href="show_bug.cgi?id=83436#c20">comment #20</a>)
> > > > (In reply to <a href="show_bug.cgi?id=83436#c19">comment #19</a>)
> > > > > (In reply to <a href="show_bug.cgi?id=83436#c18">comment #18</a>)
> > > > > > Just tried oibaf's radeonsi_dri.so to copy here on Debian (just to be sure
> > > > > > :D) and it suffers from the same problem with -march=generic ;)
> > > > >
> > > > > I mean -mtune=generic of course :).
> > > > >
> > > > > Now to bisect where that SSE4.1 code start to compile this slow (4
> > > > > minututes on Kabini just for that) :D Issue also not present on 64bit ;)
> > > >
> > > > I haven't seen the perf issue on my pure 64 bit setup, but have noticed that
> > > > the compile sits on sse4.1 for a while recently - just using one core, like
> > > > it's blocking the other threads of a make -j5 till it's done.
> > >
> > > Oh i bisected that ine, it takes 200X more time to compile on 32bit :D ,
> > > actually compile libmesa_gallium i think this is the commit:
> > >
> > > <a href="http://cgit.freedesktop.org/mesa/mesa/commit/">http://cgit.freedesktop.org/mesa/mesa/commit/</a>
> > > ?id=d55f77b503ab7b59ecdd8f31c4f7dc498710e75b
> >
> > For this look, here:
> >
> > <a href="http://lists.freedesktop.org/archives/mesa-dev/2014-August/065823.html">http://lists.freedesktop.org/archives/mesa-dev/2014-August/065823.html</a>
> >
> > Greetings and happy 'bisecting'...;-)
> >
> > Dieter
>
> So what is the solution for that after one month? Simply to use -O0 maybe :)</span >
Ping Jason Ekstrand, maybe 8-)</pre>
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