Re: [RFC PATCH 0/7] sched: cpufreq: Remove magic margins

Lukasz Luba
2023-09-07T18:21:57Z

On 9/7/23 14:29, Peter Zijlstra wrote:
> On Thu, Sep 07, 2023 at 02:06:15PM +0100, Lukasz Luba wrote:
>
>>> Many extentions to the periodic task model are possible, including
>>> things like average runtime with bursts etc.. all have their trade-offs.
>>
>> Was that maybe proposed somewhere on LKML (the other models)?
>
> RT literatur mostly methinks. Replacing WCET with a statistical model of
> sorts is not uncommon, the argument goes that not everybody will have
> their worst case at the same time and lows and highs can commonly cancel
> out and this way we can cram a little more on the system.
>
> Typically this is proposed in the context of soft-realtime systems.

Thanks Peter, I will dive into some books...