On 07/02/2018 12:34, Chris Wilson wrote:
Quoting Tvrtko Ursulin (2018-02-07 12:24:24)
From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
We can use perf reported timestamps to potentially get a more accurate
frequency average.
Lets see if this improves the situation for sporadic failures like on APL:
Frequency: min=100, max=750, boost=750 MHz
Min frequency: requested 90.0, actual 90.0
Max frequency: requested 749.8, actual 647.9
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Even if it doesn't using the embedded timestamp makes a lot more sense,
Reviewed-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Thanks.
It will definitely not fix everything. For instance I think that on one
SKL GT2 I see max frequency being reported as 1000 MHz while in
actuality it can only reach 950 Mhz. What to do one machine like that
one is the question.
Regards,
Tvrtko
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