linux-kernel - Re: Question about sched_prio_to

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Message-ID: <506d5ee6-246a-a03d-ea11-227ff4de1467@arm.com>
Date:   Mon, 7 Oct 2019 10:13:23 +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

Hi Francesco,

On 06/10/2019 23:32, Francesco Poli wrote:
[...]
> I searched the web and the mailing list archives, but I failed to find
> an answer to this question. Could someone please explain me how those
> numbers were picked?
> 

Following the blame rabbit hole I found this:

254753dc321e ("sched: make the multiplication table more accurate")
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=254753dc321ea2b753ca9bc58ac329557a20efac

which sounds like it would explain some small deltas if compared to a 
formula that is set in stone.

Hope that helps.

> Thanks for your time!
> 
>