[Bug 98979] [i915][HSW][PM] Unable to use GFX RC6 on Dell Precision M6800
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Sat Dec 3 05:35:55 UTC 2016
https://bugs.freedesktop.org/show_bug.cgi?id=98979
--- Comment #2 from Shawn Starr <shawn.starr at rogers.com> ---
Playing around further,
I disabled the i915 support for CONFIG_DRM_I915_GVT and rebuilt kernel with
today's Dec 3rd code + drm-next-4.10-wip from AMD folks.
I see GFX* stats
Result:
Core CPU Avg_MHz Busy% Bzy_MHz TSC_MHz IRQ SMI CPU%c1
CPU%c3 CPU%c6 CPU%c7 CoreTmp PkgTmp GFX%rc6 GFXMHz Pkg%pc2 Pkg%pc3 Pkg%pc6
Pkg%pc7 PkgWatt CorWatt GFXWatt
- - 4 0.39 960 2893 382 8 0.64
0.00 0.00 98.97 48 49 99.65 450 93.08 0.95 2.49
0.00 3.54 0.02 0.00
0 0 1 0.15 926 2893 28 1 1.15
0.01 0.00 98.69 44 49 99.65 450 93.08 0.95 2.49
0.00 3.54 0.02 0.00
0 4 11 1.07 1054 2893 85 1 0.23
1 1 1 0.09 1006 2893 41 1 1.57
0.00 0.00 98.35 46
1 5 8 0.93 886 2893 93 1 0.72
2 2 1 0.08 1005 2893 9 1 0.70
0.00 0.00 99.22 46
2 6 4 0.44 938 2893 51 1 0.34
3 3 1 0.12 905 2893 34 1 0.26
0.00 0.00 99.62 48
3 7 2 0.21 883 2893 41 1 0.17
Same for powertop
PowerTOP 2.8 Overview Idle stats Frequency stats Device stats
Tunables
Package | Core | CPU 0 CPU 4
| | C0 active 0.0% 0.2%
| | POLL 0.0% 0.0 ms 0.0%
0.0 ms
| | C1E-HSW 0.0% 0.0 ms 0.0%
0.0 ms
C2 (pc2) 72.5% | |
C3 (pc3) 0.8% | C3 (cc3) 0.0% | C3-HSW 0.0% 0.0 ms 0.0%
0.0 ms
C6 (pc6) 1.9% | C6 (cc6) 0.0% | C6-HSW 0.0% 0.0 ms 0.0%
0.0 ms
C7 (pc7) 0.0% | C7 (cc7) 76.6% | C7s-HSW 76.7% 64.5 ms 99.1%
166.8 ms
| Core | CPU 1 CPU 5
| | C0 active 0.0% 0.9%
| | POLL 0.0% 0.0 ms 0.0%
0.0 ms
| | C1E-HSW 0.0% 0.0 ms 0.0%
0.0 ms
| |
| C3 (cc3) 0.4% | C3-HSW 0.0% 0.0 ms 0.4%
2.0 ms
| C6 (cc6) 0.0% | C6-HSW 0.0% 0.0 ms 0.0%
0.0 ms
| C7 (cc7) 97.9% | C7s-HSW 99.2% 55.7 ms 98.7%
31.2 ms
| Core | CPU 2 CPU 6
| | C0 active 0.0% 0.2%
| | POLL 0.0% 0.0 ms 0.0%
0.0 ms
| | C1E-HSW 0.0% 0.0 ms 0.0%
0.0 ms
| |
| C3 (cc3) 0.0% | C3-HSW 0.0% 0.0 ms 0.0%
0.0 ms
| C6 (cc6) 0.0% | C6-HSW 0.0% 0.0 ms 0.0%
0.0 ms
| C7 (cc7) 99.3% | C7s-HSW 99.5% 47.9 ms 99.4%
43.7 ms
| Core | CPU 3 CPU 7
| | C0 active 0.1% 0.0%
| | POLL 0.0% 0.0 ms 0.0%
0.0 ms
| | C1E-HSW 0.0% 0.0 ms 0.0%
0.0 ms
| |
| C3 (cc3) 0.0% | C3-HSW 0.0% 0.0 ms 0.0%
0.0 ms
| C6 (cc6) 0.0% | C6-HSW 0.0% 0.0 ms 0.0%
0.0 ms
| C7 (cc7) 99.0% | C7s-HSW 99.1% 62.6 ms 99.1%
100.3 ms
| GPU |
| |
| Powered On 0.3% |
| RC6 99.7% |
| RC6p 0.0% |
Still unsure however, if it is GVT's fault or not, i do not need to boot with
i915.enable_rc6 option.
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