[Bug 97362] Low performance after suspend on RX 480

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=97362

Martin Peres  changed:

   What|Removed |Added

 Status|NEW |RESOLVED
 Resolution|--- |MOVED

--- Comment #5 from Martin Peres  ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/89.

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[Bug 97362] Low performance after suspend on RX 480

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=97362

--- Comment #4 from Gašper Sedej  ---
The issue is still present. After resume, I can make GPU to max MHz, but the
memory stays at 300MHz.

Ubuntu 16.04 + kernek 4.10rc7 + oibaf ppa (mesa git)

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[Bug 97362] Low performance after suspend on RX 480

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97362

--- Comment #3 from Grigori Goronzy  ---
FWIW, the Metro 2033 games experience a particularly bad reduction in
performance after suspend. Basically half FPS. Other demanding games, e.g. Tomb
Raider, are not affected quite as much.

Still no idea what could be causing this.

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[Bug 97362] Low performance after suspend on RX 480

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97362

--- Comment #2 from Grigori Goronzy  ---
I can confirm, I also see this. The performance reduction also depends on the
application for me. I think this issue has existed from the very start, so
there's no point in trying to bisect.

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[Bug 97362] Low performance after suspend on RX 480

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97362

Christoph Haag  changed:

   What|Removed |Added

 Attachment #125811|0   |1
is obsolete||

--- Comment #1 from Christoph Haag  ---
Created attachment 125857
  --> https://bugs.freedesktop.org/attachment.cgi?id=125857=edit
dmesg drm-next-4.9-wip

Just tried with drm-next-4.9-wip.

The vce error message is gone but the performance issue remains. So I can at
least say that this error was unrelated.

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[Bug 97362] Low performance after suspend on RX 480

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=97362

Bug ID: 97362
   Summary: Low performance after suspend on RX 480
   Product: DRI
   Version: unspecified
  Hardware: Other
OS: All
Status: NEW
  Severity: normal
  Priority: medium
 Component: DRM/AMDgpu
  Assignee: dri-devel at lists.freedesktop.org
  Reporter: haagch at frickel.club

Created attachment 125811
  --> https://bugs.freedesktop.org/attachment.cgi?id=125811=edit
dmesg

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Polaris10] (rev c7)

Tried on vanilla Linux 4.7 and 4.8-rc2 with the async pageflip commit reverted.

I'm testing with a very simple directx9 application (without nine) because the
impact is extremely obvious with wine:
http://www.codesampler.com/dx9src/dx9src_1.htm#dx9_initialization

Before suspending it runs with 5000+ FPS, after suspending it runs with <1000.
Also, if you keep the mouse pointer over the window moving, it will have a very
small performance drop before suspending and a huuuge performance drop after
suspending.

I looked at the powerplay values in sysfs while that application is running in
wine and before suspend,
pcie is
0: 2.5GB, x8 
1: 8.0GB, x16 *
and sclk is
0: 300Mhz 
1: 608Mhz 
2: 910Mhz 
3: 1077Mhz 
4: 1145Mhz 
5: 1191Mhz 
6: 1236Mhz 
7: 1288Mhz *

after suspend it's
pcie
0: 2.5GB, x8 *
1: 8.0GB, x16 
and sclk
0: 300Mhz 
1: 608Mhz *
2: 910Mhz 
3: 1077Mhz 
4: 1145Mhz 
5: 1191Mhz 
6: 1236Mhz 
7: 1288Mhz 


mclk is
0: 300Mhz 
1: 2000Mhz *
in both cases.

I then tried
echo high > /sys/class/drm/card0/device/power_dpm_force_performance_level
and the sclk clock goes to max and pcie goes to 16x again, but the performance
of the application does NOT increase so it looks like the low clocks are a
symptom of whatever causes low performance.

dmesg from 4.8-rc2 attached, shows some errors:

[  574.369317] 
failed to send message 5e ret is 0 


[  574.369317] [drm:amdgpu_vce_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 12
test failed
[  574.369317] [drm:amdgpu_resume [amdgpu]] *ERROR* resume of IP block
 failed -110
[  574.369317] [drm:amdgpu_resume_kms [amdgpu]] *ERROR* amdgpu_resume failed
(-110).

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