Re: [Intel-gfx] [PATCH 51/62] drm/i915/bdw: Use HSW formula for ring freq scaling

2013-11-06 Thread Daniel Vetter
On Sat, Nov 02, 2013 at 09:07:49PM -0700, Ben Widawsky wrote: > The current formula we use for HSW is not what is in current docs. > However, changing to the HSW formula on my HSW does not improve power > usage, and decreases performance by about 5% in limited xonotic testing. > > For gen8, until

[Intel-gfx] [PATCH 51/62] drm/i915/bdw: Use HSW formula for ring freq scaling

2013-11-02 Thread Ben Widawsky
The current formula we use for HSW is not what is in current docs. However, changing to the HSW formula on my HSW does not improve power usage, and decreases performance by about 5% in limited xonotic testing. For gen8, until we know otherwise, or run experiments, let's use the HSW formula - which