RE: [regression] cross core scheduling frequency drop bisected to 0c313cb20732

Doug Smythies
2016-04-08T22:19:20Z

On 2016.04.08 14:00 Rafael J. Wysocki wrote:
> On Friday, April 08, 2016 08:50:54 AM Mike Galbraith wrote:
>> On Fri, 2016-04-08 at 08:45 +0200, Peter Zijlstra wrote:
>>
>>> Cute, I thought you used governor=performance for your runs?
>>
>> I do, and those numbers are with it thus set.

> Well, this is a trade-off.
>
> 4.5 introduced a power regression here so this one goes back to the previous
> state of things.

Mike:

Could you send me, or point me to, the program "pipe-test"?
So far, I have only found one, but it is both old and not
the same program you are running (based on print statements).

I realize I might not be to recreate your problem scenario anyhow,
I just want to try.

... Doug