linux-kernel - Re: [PATCH 0/10] psi: pressure stall information for CPU, memory, and IO v2

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Date:   Thu, 19 Jul 2018 13:29:39 +0200
From:   peter enderborg <peter.enderborg@...y.com>
To:     Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>
CC:     Daniel Drake <drake@...lessm.com>, <linux-kernel@...r.kernel.org>,
        <linux-mm@...ck.org>, <cgroups@...r.kernel.org>,
        <linux@...lessm.com>, <linux-block@...r.kernel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...uxfoundation.org>,
        Tejun Heo <tj@...nel.org>,
        Balbir Singh <bsingharora@...il.com>,
        Mike Galbraith <efault@....de>,
        Oliver Yang <yangoliver@...com>,
        Shakeel Butt <shakeelb@...gle.com>,
        xxx xxx <x.qendo@...il.com>,
        Taras Kondratiuk <takondra@...co.com>,
        Daniel Walker <danielwa@...co.com>,
        Vinayak Menon <vinmenon@...eaurora.org>,
        Ruslan Ruslichenko <rruslich@...co.com>, <kernel-team@...com>
Subject: Re: [PATCH 0/10] psi: pressure stall information for CPU, memory, and
 IO v2

On 07/19/2018 12:21 AM, Johannes Weiner wrote:
>
> Yes, we currently use a userspace application that monitors pressure
> and OOM kills (there is usually plenty of headroom left for a small
> application to run by the time quality of service for most workloads
> has already tanked to unacceptable levels). We want to eventually add
> this back into the kernel with the appropriate configuration options
> (pressure threshold value and sustained duration etc.)
Is that the same application as googles lmkd for android? Any source
that you might share?