[Bug 90112] [BSW bisected] OglGSCloth/Lightsmark/CS/ Portal/ Half Life 2 games performance decreased by 15%-45%

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90112

--- Comment #40 from Ding Heng <hengx.ding at intel.com> ---
(In reply to Chris Wilson from comment #39)
> byt OglGSCloth
> 
> Note that chv doesn't use the full RPS autotuning. You can try
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c
> b/drivers/gpu/drm/i915/intel_pm.c
> index 5eed3caba483..ef733d164cec 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4120,7 +4120,7 @@ static bool valleyview_set_rps(struct drm_i915_private
> *dev_priv, u8 val)
>                 if (vlv_punit_write(dev_priv, PUNIT_REG_GPU_FREQ_REQ, val))
>                         return false;
>  
> -               if (!IS_CHERRYVIEW(dev_priv))
> +               if (1)
>                         gen6_set_rps_thresholds(dev_priv, val);
>  
>                 dev_priv->rps.cur_freq = val;
> 
> and see if that makes any difference

I can see OglGSCloth performance increased by about 10% on BYT. But lightsmark
performance is still lower than before on BSW.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20150609/ca9efa2d/attachment.html>