[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

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https://bugs.freedesktop.org/show_bug.cgi?id=97593

            Bug ID: 97593
           Summary: [amdgpu SI] low performace, low (about 1/4) VRAM usage
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: arek.rusi@gmail.com

Created attachment 126201
  --> https://bugs.freedesktop.org/attachment.cgi?id=126201&action=edit
screenshot from unigine-heaven

Hi, I've tried amdgpu driver for SI and GL apps run much slower than for
radeon.
Unigine-Heaven drops from 20 fps to 8 fps
VRAM usage ~ 200MB
requested VRAM ~500MB
GTT usage ~ 500MB 
Look at the screenshot for more.

drm-next-4.9-wip: 48fad3aff638c7bc16656e31047f689aa44020a1 
xorg-git
mesa-git:98f734e
llvm-svn:280612
libdrm:4462303 + 2 patches for SI support from amd-gfx's list

I used unigine-heaven benchmark for first shot but more apps in affected:
Alien Isolation
Shadow of Mordor
Bioshock Infinite
Metro 2033 Redux
XCOM
The Witcher 2
xonotic (for quality "low" performance is normal) 
In fact only glxgears, lightsmark, gputest(all),openarena are not affected :) 

In any case VRAM-usage isn't raised over a 250MB but dmesg & xorg logs are
different for each games, I will try update the logs later.
I've tested it with dpm=1, but dpm=0 makes nothing.

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[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

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https://bugs.freedesktop.org/show_bug.cgi?id=97593

--- Comment #1 from Arek Ruśniak <arek.rusi@gmail.com> ---
Created attachment 126202
  --> https://bugs.freedesktop.org/attachment.cgi?id=126202&action=edit
kernel log for heaven

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[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

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https://bugs.freedesktop.org/show_bug.cgi?id=97593

--- Comment #2 from Arek Ruśniak <arek.rusi@gmail.com> ---
Created attachment 126203
  --> https://bugs.freedesktop.org/attachment.cgi?id=126203&action=edit
xorg log for heaven

this is next boot then dmesg, heaven starts at 78 sec.

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[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

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https://bugs.freedesktop.org/show_bug.cgi?id=97593

--- Comment #3 from Arek Ruśniak <arek.rusi@gmail.com> ---
Created attachment 126231
  --> https://bugs.freedesktop.org/attachment.cgi?id=126231&action=edit
dmesg log

dmesg for:

shadow of mordor (empty)
metro 2033 redux
bioshock infinite
alien: isolation
deadfall adventures
tomb raider
xcom (empty)

xonotic

i've played a few second each game

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[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

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https://bugs.freedesktop.org/show_bug.cgi?id=97593

--- Comment #4 from Arek Ruśniak <arek.rusi@gmail.com> ---
Created attachment 126232
  --> https://bugs.freedesktop.org/attachment.cgi?id=126232&action=edit
xorg log

looks good to me

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[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

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https://bugs.freedesktop.org/show_bug.cgi?id=97593

--- Comment #5 from Michel Dänzer <michel@daenzer.net> ---
Created attachment 126237
  --> https://bugs.freedesktop.org/attachment.cgi?id=126237&action=edit
Update active VRAM size when turning DMA on/off

Does this patch fix the problem?

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[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

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https://bugs.freedesktop.org/show_bug.cgi?id=97593

--- Comment #6 from Konstantin A. Lepikhov <lakostis@altlinux.org> ---
(In reply to Michel Dänzer from comment #5)
> Created attachment 126237 [details] [review]
> Update active VRAM size when turning DMA on/off
> 
> Does this patch fix the problem?

It helped in my case - FPS in Heaven increased from 1 to 15 and VRAM usage was
optimal.

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[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

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https://bugs.freedesktop.org/show_bug.cgi?id=97593

--- Comment #7 from Arek Ruśniak <arek.rusi@gmail.com> ---
Michael yes, it fix the problem. VM-errors are still making some noise but i
think it's another problem.
thx

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[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

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https://bugs.freedesktop.org/show_bug.cgi?id=97593

--- Comment #8 from Arek Ruśniak <arek.rusi@gmail.com> ---
*Michel
it's embarrassing

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[Bug 97593] [amdgpu SI] low performace, low (about 1/4) VRAM usage

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https://bugs.freedesktop.org/show_bug.cgi?id=97593

Arek Ruśniak <arek.rusi@gmail.com> changed:

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

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