[lkml]   [2021]   [Jul]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 1/3] sched/fair: Prepare variables for increased precision of EAS estimated energy
Hi Peter,

Gentle ping.
You might missed my previous email.

On 6/30/21 6:28 PM, Lukasz Luba wrote:
> On 6/30/21 6:01 PM, Rafael J. Wysocki wrote:
>> On Fri, Jun 25, 2021 at 5:26 PM Lukasz Luba <> wrote:
>>> The Energy Aware Scheduler (EAS) tries to find best CPU for a waking up
>>> task. It probes many possibilities and compares the estimated energy
>>> values
>>> for different scenarios. For calculating those energy values it
>>> relies on
>>> Energy Model (EM) data and em_cpu_energy(). The precision which is
>>> used in
>>> EM data is in milli-Watts (or abstract scale), which sometimes is not
>>> sufficient. In some cases it might happen that two CPUs from different
>>> Performance Domains (PDs) get the same calculated value for a given task
>>> placement, but in more precised scale, they might differ. This rounding
>>> error has to be addressed. This patch prepares EAS code for better
>>> precision in the coming EM improvements.
>>> Signed-off-by: Lukasz Luba <>
>> If you want me to pick up this series, this patch requires an ACK from
>> the scheduler maintainers.
> It would be great, if you could take it after e.g. Peter ACK it.
> Peter could you have a look at it, please?
> In this patch 1/3 we have only variables upgrade.
> Regards,
> Lukasz

Could you have a look and ACK the patch 1/3, please?

 \ /
  Last update: 2021-07-02 21:07    [W:11.569 / U:0.020 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site