From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx153.postini.com [74.125.245.153]) by kanga.kvack.org (Postfix) with SMTP id 14C8E6B0044 for ; Mon, 15 Oct 2012 20:54:40 -0400 (EDT) Received: by mail-pa0-f41.google.com with SMTP id fa10so6083271pad.14 for ; Mon, 15 Oct 2012 17:54:39 -0700 (PDT) Date: Mon, 15 Oct 2012 17:54:37 -0700 (PDT) From: David Rientjes Subject: Re: [PATCH] doc: describe memcg swappiness more precisely memory.swappiness==0 In-Reply-To: <20121015220725.GB11682@dhcp22.suse.cz> Message-ID: References: <20121011085038.GA29295@dhcp22.suse.cz> <1349945859-1350-1-git-send-email-mhocko@suse.cz> <20121015220354.GA11682@dhcp22.suse.cz> <20121015220725.GB11682@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Andrew Morton , linux-mm@kvack.org, KOSAKI Motohiro , KAMEZAWA Hiroyuki , Johannes Weiner , LKML On Tue, 16 Oct 2012, Michal Hocko wrote: > And a follow up for memcg.swappiness documentation which is more > specific about spwappiness==0 meaning. > --- > From 1bc3a94fea728107ed108edd42df464b908cd067 Mon Sep 17 00:00:00 2001 > From: Michal Hocko > Date: Mon, 15 Oct 2012 11:43:56 +0200 > Subject: [PATCH] doc: describe memcg swappiness more precisely > > since fe35004f (mm: avoid swapping out with swappiness==0) memcg reclaim > stopped swapping out anon pages completely when 0 value is used. > Although this is somehow expected it hasn't been done for a really long > time this way and so it is probably better to be explicit about the > effect. Moreover global reclaim swapps out even when swappiness is 0 > to prevent from OOM killer. > > Signed-off-by: Michal Hocko Acked-by: David Rientjes -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org