From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx181.postini.com [74.125.245.181]) by kanga.kvack.org (Postfix) with SMTP id 9A7C76B006C for ; Mon, 29 Oct 2012 06:02:08 -0400 (EDT) Date: Mon, 29 Oct 2012 11:01:59 +0100 (CET) From: Jiri Kosina Subject: Re: [PATCH] add some drop_caches documentation and info messsge In-Reply-To: <20121029095819.GA4326@liondog.tnic> Message-ID: References: <20121012125708.GJ10110@dhcp22.suse.cz> <20121024210600.GA17037@liondog.tnic> <20121024141303.0797d6a1.akpm@linux-foundation.org> <1787395.7AzIesGUbB@vostro.rjw.lan> <20121024181752.de011615.akpm@linux-foundation.org> <20121029095819.GA4326@liondog.tnic> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Borislav Petkov Cc: Andrew Morton , "Rafael J. Wysocki" , Dave Hansen , Michal Hocko , linux-mm@kvack.org, KAMEZAWA Hiroyuki , KOSAKI Motohiro , LKML On Mon, 29 Oct 2012, Borislav Petkov wrote: > > You might or might not want to do that. Dropping caches around suspend > > makes the hibernation process itself faster, but the realtime response > > of the applications afterwards is worse, as everything touched by user > > has to be paged in again. > > Right, do you know of a real use-case where people hibernate, then > resume and still care about applications response time right afterwards? Well if the point of dropping caches is lowering the resume time, then the point is rendered moot as soon as you switch to your browser and have to wait noticeable amount of time until it starts reacting. -- Jiri Kosina SUSE Labs -- 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