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Date:   Wed, 5 Aug 2020 17:31:20 +0200
From:   peterz@infradead.org
To:     Valentin Schneider <valentin.schneider@arm.com>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Vladimir Oltean <olteanv@gmail.com>,
        Kurt Kanzenbach <kurt.kanzenbach@linutronix.de>,
        Alison Wang <alison.wang@nxp.com>, catalin.marinas@arm.com,
        will@kernel.org, paulmck@kernel.org, mw@semihalf.com,
        leoyang.li@nxp.com, vladimir.oltean@nxp.com,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Anna-Maria Gleixner <anna-maria@linutronix.de>
Subject: Re: [RFC PATCH] arm64: defconfig: Disable fine-grained task level
 IRQ time accounting
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On Wed, Aug 05, 2020 at 02:56:49PM +0100, Valentin Schneider wrote:

> I've been tempted to say the test case is a bit bogus, but am not familiar
> enough with the RT throttling details to stand that ground. That said, from
> both looking at the execution and the stress-ng source code, it seems to
> unconditionally spawn 32 FIFO-50 tasks (there's even an option to make
> these FIFO-99!!!), which is quite a crowd on monoCPU systems.

Oh, so it's a case of: we do stupid without tuning and the system falls
over. I can live with that.