From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753352AbcEMPc0 (ORCPT ); Fri, 13 May 2016 11:32:26 -0400 Received: from smtpoutz300.laposte.net ([178.22.154.200]:59531 "EHLO smtp.laposte.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751187AbcEMPcZ (ORCPT ); Fri, 13 May 2016 11:32:25 -0400 Message-ID: <5735F386.2070604@laposte.net> Date: Fri, 13 May 2016 17:32:22 +0200 From: Sebastian Frias User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 MIME-Version: 1.0 To: One Thousand Gnomes , Mason CC: Michal Hocko , linux-mm@kvack.org, Andrew Morton , Linus Torvalds , LKML Subject: Re: [PATCH] mm: add config option to select the initial overcommit mode References: <5731CC6E.3080807@laposte.net> <20160513080458.GF20141@dhcp22.suse.cz> <573593EE.6010502@free.fr> <5735A3DE.9030100@laposte.net> <20160513120042.GK20141@dhcp22.suse.cz> <5735CAE5.5010104@laposte.net> <20160513145101.GS20141@dhcp22.suse.cz> <5735EBBC.6050705@free.fr> <20160513161104.330ab3d6@lxorguk.ukuu.org.uk> In-Reply-To: <20160513161104.330ab3d6@lxorguk.ukuu.org.uk> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-VR-SrcIP: 83.142.147.193 X-VR-FullState: 0 X-VR-Score: -100 X-VR-Cause-1: gggruggvucftvghtrhhoucdtuddrfeekledrvddugdekjecutefuodetggdotefrodftvfcurfhrohhf X-VR-Cause-2: ihhlvgemucfntefrqffuvffgnecuuegrihhlohhuthemucehtddtnecusecvtfgvtghiphhivghnthhs X-VR-Cause-3: ucdlqddutddtmdenucfjughrpefkfffhfgggvffufhgjtgfgsehtjegrtddtfeehnecuhfhrohhmpefu X-VR-Cause-4: vggsrghsthhirghnucfhrhhirghsuceoshhfkeegsehlrghpohhsthgvrdhnvghtqeenucfkphepkeef X-VR-Cause-5: rddugedvrddugeejrdduleefnecurfgrrhgrmhepmhhouggvpehsmhhtphhouhhtpdhhvghloheplgdu X-VR-Cause-6: jedvrddvjedrtddrvddugegnpdhinhgvthepkeefrddugedvrddugeejrdduleefpdhmrghilhhfrhho X-VR-Cause-7: mhepshhfkeegsehlrghpohhsthgvrdhnvghtpdhrtghpthhtohepghhnohhmvghssehlgihorhhguhhk X-VR-Cause-8: rdhukhhuuhdrohhrghdruhhk X-VR-AvState: No X-VR-State: 0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Alan, On 05/13/2016 05:11 PM, One Thousand Gnomes wrote: >> It seems important to point out that Sebastian's patch does NOT change >> the default behavior. It merely creates a knob allowing one to override >> the default via Kconfig. >> >> +choice >> + prompt "Overcommit Mode" >> + default OVERCOMMIT_GUESS >> + depends on EXPERT > > Which is still completely pointless given that its a single sysctl value > set at early userspace time and most distributions ship with things like > sysctl and /etc/sysctl.conf > You are right, and I said that when the thread started, but I think most people here are looking at this from a server/desktop perspective. Also, we wanted to have more background on this setting, its history, etc. thus this discussion. It would be interesting in know what other people working on embedded systems think about this subject, because most examples given are for much bigger systems. Best regards, Sebastian