On 22/11/2021 18:44, Rodrigo Vivi wrote:
On Wed, Nov 17, 2021 at 02:49:55PM -0800, Vinay Belgaumkar wrote:
From: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
While the power consumption is proportional to the frequency, there is
also a static draw for active gates. The longer we are able to powergate
(rc6), the lower the static draw. Thus there is a sweetspot in the
frequency/power curve where we run at higher frequency in order to sleep
longer, aka race-to-idle. This is more evident at lower frequencies, so
let's look to bump the frequency if we think we will benefit by sleeping
longer at the higher frequency and so conserving power.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Vinay Belgaumkar <vinay.belgaumkar@xxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxxxxxxx>
Please let's not increase the complexity here, unless we have a very good
and documented reason.
Before trying to implement anything smart like this in the driver I'd like
to see data, power and performance results in different platforms and with
different workloads.
Who has such test suite and test farm which isn't focused to workloads
from a single customer? ;(
Regards,
Tvrtko
