From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932937AbeAXJhB (ORCPT ); Wed, 24 Jan 2018 04:37:01 -0500 Received: from merlin.infradead.org ([205.233.59.134]:52254 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932778AbeAXJg7 (ORCPT ); Wed, 24 Jan 2018 04:36:59 -0500 Date: Wed, 24 Jan 2018 10:36:07 +0100 From: Peter Zijlstra To: Tejun Heo Cc: Petr Mladek , Linus Torvalds , akpm@linux-foundation.org, Steven Rostedt , Sergey Senozhatsky , linux-mm@kvack.org, Cong Wang , Dave Hansen , Johannes Weiner , Mel Gorman , Michal Hocko , Vlastimil Babka , Jan Kara , Mathieu Desnoyers , Tetsuo Handa , rostedt@rostedt.homelinux.com, Byungchul Park , Sergey Senozhatsky , Pavel Machek , linux-kernel@vger.kernel.org Subject: Re: [PATCH v5 0/2] printk: Console owner and waiter logic cleanup Message-ID: <20180124093607.GK2269@hirez.programming.kicks-ass.net> References: <20180110132418.7080-1-pmladek@suse.com> <20180110140547.GZ3668920@devbig577.frc2.facebook.com> <20180110162900.GA21753@linux.suse> <20180110170223.GF3668920@devbig577.frc2.facebook.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180110170223.GF3668920@devbig577.frc2.facebook.com> User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jan 10, 2018 at 09:02:23AM -0800, Tejun Heo wrote: > 1. Console is IPMI emulated serial console. Super slow. Also > netconsole is in use. So my IPMI SoE typically run at 115200 Baud (or higher) and I've not had trouble like that (granted I don't typically trigger OOM storms, but they do occasionally happen). Is your IPMI much slower and not fixable to be faster?