Re: [PATCH] block: BFQ default for single queue devices

Pavel Machek
2018-10-05T09:49:09Z

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Hi!

> On another hand, the users of embedded devices, mentioned by Linus,
> > should already know what scheduler to choose because dealing with
> > embedded world assumes the person can decide this on their own, or with
> > the help of abovementioned udev scripts and/or Documentation/ as a
> > reference point.
> >
> > So I see no obstacles here, and the choice to rely on udev by default
> > sounds reasonable.
> >
>
> I am sorry but I do not agree with this.
>
> There are several historical precedents where we have
> concluded that just "have the kernel do the right thing
> by default" is the way to go.

Kernel should do the right thing by default, I agree with Linus W.

Having reasonable defaults is useful; yes, my desktop has udev etc,
but I still want reasonable scheduler when doing fsck in
init=/bin/bash.

Plus, I update kernels more often than distros, and I run various
embedded stuff.

Kernel should just provide reasonable defaults.

And yes, we have "ionice" command and yes, it would be nice if it
worked by default...

Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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