From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yw0-f198.google.com (mail-yw0-f198.google.com [209.85.161.198]) by kanga.kvack.org (Postfix) with ESMTP id 654686B000E for ; Tue, 24 Jul 2018 10:28:23 -0400 (EDT) Received: by mail-yw0-f198.google.com with SMTP id c67-v6so2258386ywc.21 for ; Tue, 24 Jul 2018 07:28:23 -0700 (PDT) Received: from mail-sor-f41.google.com (mail-sor-f41.google.com. [209.85.220.41]) by mx.google.com with SMTPS id 137-v6sor2473816ybd.21.2018.07.24.07.28.22 for (Google Transport Security); Tue, 24 Jul 2018 07:28:22 -0700 (PDT) Date: Tue, 24 Jul 2018 07:28:20 -0700 From: Tejun Heo Subject: Re: cgroup-aware OOM killer, how to move forward Message-ID: <20180724142820.GL1934745@devbig577.frc2.facebook.com> References: <20180719170543.GA21770@castle.DHCP.thefacebook.com> <20180723141748.GH31229@dhcp22.suse.cz> <20180723150929.GD1934745@devbig577.frc2.facebook.com> <20180724073230.GE28386@dhcp22.suse.cz> <20180724130836.GH1934745@devbig577.frc2.facebook.com> <20180724132640.GL28386@dhcp22.suse.cz> <20180724133110.GJ1934745@devbig577.frc2.facebook.com> <20180724135022.GO28386@dhcp22.suse.cz> <20180724135528.GK1934745@devbig577.frc2.facebook.com> <20180724142554.GQ28386@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180724142554.GQ28386@dhcp22.suse.cz> Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Roman Gushchin , hannes@cmpxchg.org, David Rientjes , linux-mm@kvack.org, akpm@linux-foundation.org, gthelen@google.com Hello, On Tue, Jul 24, 2018 at 04:25:54PM +0200, Michal Hocko wrote: > I am sorry but I do not follow. Besides that modeling the behavior on > panic_on_oom doesn't really sound very appealing to me. The knob is a > crude hack mostly motivated by debugging (at least its non-global > variants). Hmm... we actually do use that quite a bit in production (moving away from it gradually). > So can we get back to workloads and shape the semantic on top of that > please? I didn't realize we were that off track. Don't both map to what we were discussing almost perfectly? Thanks. -- tejun