[Bug 103917] [gfx9/Vega] Performance regression in master, 17.3 works fine

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103917

Timothy Arceri <t_arceri at yahoo.com.au> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |WORKSFORME

--- Comment #3 from Timothy Arceri <t_arceri at yahoo.com.au> ---
(In reply to Vedran Miletić from comment #0)
> I'm using Fedora rawhide (to become 28) along with Mesa 17.3.0-rc3, LLVM
> 5.0.0 and Kernel 4.15-git. If I install Mesa 17.3.0-rc5, everything still
> works fine. If I install Mesa git, everything works fine with 17.3-rc3
> running desktop and 17.4 running games.
> 

Using rawhide especially so early into a release you should expect issues all
over the place. This isn't a very good way to be testing Mesa from git and
reporting issues, for example there can be kernel/gcc/x/desktop bugs etc it
makes it hard to narrow things down, on top of that package versions are
constantly changing. It's better to Upgrade Mesa/LLVM/kernel etc on a stable
distro for your testing.

> After rebo a reboot, however, with Mesa git running both the desktop and
> games, performance in games is very bad, rougly 1 fps.
> 

It could be anything but possibly you have fallen back to software rendering. 

Anyway Fedora 28 will be using LLVM 6.0, Linux 4.16. I'm going to close the bug
report as there isn't much to go on here, but feel free to reopen if you still
have issue with the stable Fedora 28 release.

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