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Date:   Mon, 17 Dec 2018 15:57:54 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Suren Baghdasaryan <surenb@google.com>
Cc:     gregkh@linuxfoundation.org, tj@kernel.org, lizefan@huawei.com,
        hannes@cmpxchg.org, axboe@kernel.dk, dennis@kernel.org,
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        corbet@lwn.net, cgroups@vger.kernel.org, linux-mm@kvack.org,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        kernel-team@android.com
Subject: Re: [PATCH 3/6] psi: eliminate lazy clock mode
Message-ID: <20181217145754.GB2218@hirez.programming.kicks-ass.net>
References: <20181214171508.7791-1-surenb@google.com>
 <20181214171508.7791-4-surenb@google.com>
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On Fri, Dec 14, 2018 at 09:15:05AM -0800, Suren Baghdasaryan wrote:
> Eliminate the idle mode and keep the worker doing 2s update intervals
> at all times.

That sounds like a bad deal.. esp. so for battery powered devices like
say Andoird.

In general the push has been to always idle everything, see NOHZ and
NOHZ_FULL and all the work that's being put into getting rid of any and
all period work.