linux-kernel - Re: Question about sched_prio_to

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Date:   Thu, 10 Oct 2019 18:28:36 +0100
From:   Valentin Schneider <valentin.schneider@....com>
To:     Francesco Poli <invernomuto@...anoici.org>,
        linux-kernel@...r.kernel.org
Subject: Re: Question about sched_prio_to_weight values

On 07/10/2019 21:41, Francesco Poli wrote:
> The differences are probably due to the different precision
> of the computations: I don't know the precision of those originally
> carried out by Ingo Molnar (single precision? double?), but calc(1)
> is an arbitrary precision calculator and, by default, performs
> calculations with epsilon = 1e-20 !
> 
> Please note that, except for the first one, all the differing
> values obtained with the calc(1) script have slightly better
> errors than the ones found in kernel/sched/core.c ...
> 

As always patches are welcome, but I don't know how much there is to gain
from a tiny error correction in those factors.

Out of curiosity, what led you to stare at those numbers?

> 
> Thanks again for the clarification!
> Bye.
>