[Bug 78788] New: [Radeon\VCE] Performance regression after using VCE

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=78788

          Priority: medium
            Bug ID: 78788
          Assignee: dri-devel at lists.freedesktop.org
           Summary: [Radeon\VCE] Performance regression after using VCE
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: pontostroy at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Linux drm-next 3.15rc3
Radeon hd 7790

After using VCE video encoding, 3d performance slow down up to 3-4 times

I made short video with this problem
http://www.youtube.com/watch?v=YfPXHTHzO6s

dmesg after vce

[  415.097591] switching from power state:
[  415.097595]  ui class: performance
[  415.097596]  internal class: none
[  415.097598]  caps: 
[  415.097611]  uvd    vclk: 0 dclk: 0
[  415.097612]          power level 0    sclk: 30000 mclk: 15000 pcie gen: 3
pcie lanes: 16
[  415.097613]          power level 1    sclk: 105000 mclk: 150000 pcie gen: 3
pcie lanes: 16
[  415.097614]  status: c r 
[  415.097615] switching to power state:
[  415.097615]  ui class: performance
[  415.097616]  internal class: none
[  415.097617]  caps: 
[  415.097618]  uvd    vclk: 0 dclk: 0
[  415.097618]          power level 0    sclk: 30000 mclk: 15000 pcie gen: 3
pcie lanes: 16
[  415.097619]          power level 1    sclk: 105000 mclk: 150000 pcie gen: 3
pcie lanes: 16
[  415.097620]  status: c r 
[  441.772194] switching from power state:
[  441.772198]  ui class: performance
[  441.772199]  internal class: none
[  441.772200]  caps: 
[  441.772201]  uvd    vclk: 0 dclk: 0
[  441.772202]          power level 0    sclk: 30000 mclk: 15000 pcie gen: 3
pcie lanes: 16
[  441.772203]          power level 1    sclk: 105000 mclk: 150000 pcie gen: 3
pcie lanes: 16
[  441.772204]  status: c r 
[  441.772205] switching to power state:
[  441.772205]  ui class: performance
[  441.772206]  internal class: none
[  441.772207]  caps: 
[  441.772207]  uvd    vclk: 0 dclk: 0
[  441.772208]          power level 0    sclk: 30000 mclk: 15000 pcie gen: 3
pcie lanes: 16
[  441.772209]          power level 1    sclk: 105000 mclk: 150000 pcie gen: 3
pcie lanes: 16
[  441.772210]  status: c r

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