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[96.246.38.36]) by smtp.gmail.com with ESMTPSA id l22-v6sm5779640qkh.72.2018.07.19.05.15.49 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 19 Jul 2018 05:15:49 -0700 (PDT) Date: Thu, 19 Jul 2018 08:18:37 -0400 From: Johannes Weiner To: peter enderborg Cc: Michal Hocko , Daniel Drake , linux-kernel@vger.kernel.org, linux-mm@kvack.org, cgroups@vger.kernel.org, linux@endlessm.com, linux-block@vger.kernel.org, Ingo Molnar , Peter Zijlstra , Andrew Morton , Tejun Heo , Balbir Singh , Mike Galbraith , Oliver Yang , Shakeel Butt , xxx xxx , Taras Kondratiuk , Daniel Walker , Vinayak Menon , Ruslan Ruslichenko , kernel-team@fb.com Subject: Re: [PATCH 0/10] psi: pressure stall information for CPU, memory, and IO v2 Message-ID: <20180719121837.GA13799@cmpxchg.org> References: <20180712172942.10094-1-hannes@cmpxchg.org> <20180716155745.10368-1-drake@endlessm.com> <20180717112515.GE7193@dhcp22.suse.cz> <20180718222157.GG2838@cmpxchg.org> <143db4db-2613-345d-9b8e-1794b6d8c4fe@sony.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <143db4db-2613-345d-9b8e-1794b6d8c4fe@sony.com> User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jul 19, 2018 at 01:29:39PM +0200, peter enderborg wrote: > 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? Sure! This is the oomd we've been developing and using at Facebook: https://github.com/facebookincubator/oomd