Messages in this thread | | | Date | Wed, 14 Jun 2023 16:15:12 +0200 | From | Juri Lelli <> | Subject | Re: [RFC PATCH V3 6/6] sched/fair: Implement starvation monitor |
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Hey,
So Daniel provided the gory details :) .. but please let me highlight one of his points below, which I think it might clarify why we might want to start with a special case, patch 6 improved approach, before possibly moving to more complex implementations.
On 14/06/23 15:45, Daniel Bristot de Oliveira wrote:
...
> By postponing the enqueue/replanishment of the DL server here, we are fixing the > problem in a practical way, that works without breaking existing useful properties & > use-cases.
In my understanding, if we simply postpone actual activation of the DL server up to the point it really needs to boost/run for giving CFS tasks some breath (the infamous 0-laxity :), we save RT tasks from useless interruptions and still can keep EDF/CBS working w/o much changes.
It looks like a low hanging fruit, small improvement on what we have today than doesn't prevent us for implementing more complex features (i.e., full blown hierarchical scheduling, alternative schedulers) in the future if the need arises.
Thanks! Juri
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