[Bug 88227] Radeonsi: High GTT usage in Prison Architect large map - bugzilla-daemon

From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 88227] Radeonsi: High GTT usage in Prison Architect large map
Date: Fri, 09 Jan 2015 09:16:09 +0000	[thread overview]
Message-ID: <bug-88227-502@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=88227

            Bug ID: 88227
           Summary: Radeonsi: High GTT usage in Prison Architect large map
           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: lothmordor@gmail.com

Created attachment 111992
  --> https://bugs.freedesktop.org/attachment.cgi?id=111992&action=edit
dmesg

Poor performace in Prison Architect (version alpha-28) when trying to play on
the large map setting.  Small map is smooth, Gallium hud showing 60fps.  A new
game with a large map (empty, nothing constructed) has about 0fps and high GTT
usage while zoomed out.  Zooming in fairly close on the large map shows a
decrease in GTT use and fps increases.

Kernel is linux-3.19.0-rc3
Running git versions of the following packages (updated Jan 08):
libdrm 566c3ce877a4be72697e15cdfc421ce965f7c37d
llvm c41acffe2297585ad56aa772de75e82c132070bb
xf86-video-ati 04da199231bb3f11cf17f94574a8df05855a7b82
mesa 3d8188d4f898afcf4f181de29e12c5b218bbd393

dmesg shows two errors:
[ 5665.586842] [drm:radeon_cs_ioctl [radeon]] *ERROR* Failed to parse
relocation -12!
[ 5750.747498] [drm:radeon_gem_va_ioctl [radeon]] *ERROR* Couldn't update BO_VA
(-512)

R600_DEBUG=cs shows:
radeon: The kernel rejected CS, see dmesg for more information.
R600_DEBUG=nodma seemed to have no effect.

Logs and gallium hud screenshots attached.  Just picked up this game, so not
sure if there is a regression involved.  Will try some older kernels and mesa.

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