Re: [PATCH v5 1/3] sched/fair: Introduce the burstable CFS controller

From: Tejun Heo
Date: Thu May 20 2021 - 13:04:27 EST


Hello, Odin.

On Thu, May 20, 2021 at 04:00:29PM +0200, Odin Ugedal wrote:
> > cpu.max
> > A read-write two value file which exists on non-root cgroups.
> > The default is "max 100000".
>
> This will become a "three value file", and I know a few user space projects
> who parse this file by splitting on the middle space. I am not sure if they are
> "wrong", but I don't think we usually break such things. Not sure what
> Tejun thinks about this.

Good point. I haven't thought about that. It would make more sense to
separate it out to a separate file then - e.g. sth like cpu.max.burst, but
it seems like there are important questions to answer before adding new
interfaces.

Thanks.

--
tejun