Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758380Ab2J2J6Z (ORCPT ); Mon, 29 Oct 2012 05:58:25 -0400 Received: from mail.skyhub.de ([78.46.96.112]:50044 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758123Ab2J2J6X (ORCPT ); Mon, 29 Oct 2012 05:58:23 -0400 Date: Mon, 29 Oct 2012 10:58:19 +0100 From: Borislav Petkov To: Jiri Kosina Cc: Andrew Morton , "Rafael J. Wysocki" , Dave Hansen , Michal Hocko , linux-mm@kvack.org, KAMEZAWA Hiroyuki , KOSAKI Motohiro , LKML Subject: Re: [PATCH] add some drop_caches documentation and info messsge Message-ID: <20121029095819.GA4326@liondog.tnic> Mail-Followup-To: Borislav Petkov , Jiri Kosina , Andrew Morton , "Rafael J. Wysocki" , Dave Hansen , Michal Hocko , linux-mm@kvack.org, KAMEZAWA Hiroyuki , KOSAKI Motohiro , LKML 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> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 834 Lines: 22 On Mon, Oct 29, 2012 at 09:59:59AM +0100, Jiri Kosina 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? Besides, once everything is swapped back in, perf. is back to normal, i.e. like before suspending. Thanks. -- Regards/Gruss, Boris. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/