[Bug 91801] [amd][tahiti xt] severe performance loss

[Bug 91801] [amd][tahiti xt] severe performance loss

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https://bugs.freedesktop.org/show_bug.cgi?id=91801

            Bug ID: 91801
           Summary: [amd][tahiti xt] severe performance loss
           Product: DRI
           Version: DRI git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: sylvain.bertrand@gmail.com

With the same user space (mesa/libdrm...), I went from agd5f linux
(drm-fixes-4.1 ee18e599251ed06bf0c8ade7c434a0de311342ca)
to an official linux 4.2-rc8.
All 3D games suffer from a severe performance loss.

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[Bug 91801] [amd][tahiti xt] severe performance loss

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https://bugs.freedesktop.org/show_bug.cgi?id=91801

--- Comment #1 from Sylvain BERTRAND <sylvain.bertrand@gmail.com> ---
I tried with latest agd5f drm-next-4.3
(c2b6bd7e91aad8440a2f55bdbde6f5a8ae19fac5)
The performance loss is the same than with the official 4.2-rc8.

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[Bug 91801] [amd][tahiti xt] severe performance loss

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https://bugs.freedesktop.org/show_bug.cgi?id=91801

--- Comment #2 from Sylvain BERTRAND <sylvain.bertrand@gmail.com> ---
bisected: commit 8cb9764fc88b41db11f251e8b2a0d006578b7eb4
Not a driver bug, linux core scheduler code seems screwed for my full dyntick
systems :(((((

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[Bug 91801] [amd][tahiti xt] severe performance loss

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https://bugs.freedesktop.org/show_bug.cgi?id=91801

Michel Dänzer <michel@daenzer.net> changed:

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

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