Re: [PATCH v2] block: BFQ default for single queue devices

Bart Van Assche
2018-10-17T14:48:33Z

On 10/17/18 3:05 AM, Jan Kara wrote:
> Well, the problem with this is that big distro people really don't care
> much because they already use udev for tuning the IO scheduler. So whatever
> defaults the kernel is going to pick likely won't be seen by distro
> customers. Embedded people seem to be driving this effort because they
> either don't run udev or they feel not all their teams building new
> products have enough expertise to come up with a proper set of rules...

What's missing in this discussion is a definition of "embedded system".
Is that a system like a streaming player for TV channels that neither
has a keyboard nor a display or a system that can run multiple apps
simultaneously like a smartphone? I think the difference matters because
some embedded devices hardly do any background I/O nor load any
executable code from storage after boot. So at least for some embedded
devices the problem discussed in this e-mail thread does not exist.

Bart.