linux-kernel - Re: [RFC PATCH 2/5] sched: Add NOHZ_STATS

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Message-ID: <20171222204247.kyc6ugyyu3ei7zhs@hirez.programming.kicks-ass.net>
Date:   Fri, 22 Dec 2017 21:42:47 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     Ingo Molnar <mingo@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Brendan Jackman <brendan.jackman@....com>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Morten Rasmussen <morten.rasmussen@....com>
Subject: Re: [RFC PATCH 2/5] sched: Add NOHZ_STATS_KICK

On Fri, Dec 22, 2017 at 07:56:29PM +0100, Peter Zijlstra wrote:
> Right; but I figured we'd try and do it 'right' and see how horrible it
> is before we try and do funny things.

So now it should have a 32ms tick for up to .5s when the system goes
completely idle.

No idea how bad that is..