linux-kernel - Re: [PATCH 3/3] sched: Update ->next_balance correctly during newidle balance

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Date:   Fri, 20 Oct 2023 11:50:32 -0400
From:   Joel Fernandes <joel@...lfernandes.org>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     Vincent Guittot <vincent.guittot@...aro.org>,
        linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ben Segall <bsegall@...gle.com>, Mel Gorman <mgorman@...e.de>,
        Daniel Bristot de Oliveira <bristot@...hat.com>,
        Valentin Schneider <vschneid@...hat.com>,
        "Vineeth Pillai (Google)" <vineeth@...byteword.org>,
        Suleiman Souhlal <suleiman@...gle.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: Re: [PATCH 3/3] sched: Update ->next_balance correctly during newidle balance

On Fri, Oct 20, 2023 at 9:57 AM Ingo Molnar <mingo@...nel.org> wrote:
>
>
> * Vincent Guittot <vincent.guittot@...aro.org> wrote:
>
> > Even if your figures look interesting, your patch adds regression in
> > the load balance and the fairness.
>
> Indeed - I've removed it from tip:sched/core for the time being.

Sorry we should have marked it as RFC. We still feel there are issues
in the newidle balance code and the fix is in the right direction,
we'll continue discussing with Vincent on the other thread and try to
come up with a proper solution.

Thank you Ingo and Vincent!

 - Joel & Vineeth