linux-kernel - Re: [PATCH 4/4] timers/nohz: Update nohz load in remote tick

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Message-ID: <20200107092633.GT2844@hirez.programming.kicks-ass.net>
Date:   Tue, 7 Jan 2020 10:26:33 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Scott Wood <swood@...hat.com>
Cc:     Frederic Weisbecker <fweisbec@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] timers/nohz: Update nohz load in remote tick

On Mon, Dec 16, 2019 at 06:22:25PM -0500, Scott Wood wrote:
> From: Peter Zijlstra <peterz@...radead.org>
> 
> The way loadavg is tracked during nohz only pays attention to the load
> upon entering nohz.  This can be particularly noticeable if full nohz is
> entered while non-idle, and then the cpu goes idle and stays that way for
> a long time.
> 
> Use the remote tick to ensure that full nohz cpus report their deltas
> within a reasonable time.
> 
> [swood: added changelog and removed recheck of stopped tick]
> Signed-off-by: Scott Wood <swood@...hat.com>
> ---
> This patch was provided by Peter in an unsigned email reply --
> Peter, can I get a signoff?

Here goes, glad it works :-)

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>