Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753676Ab1BVVJ1 (ORCPT ); Tue, 22 Feb 2011 16:09:27 -0500 Received: from ogre.sisk.pl ([217.79.144.158]:48874 "EHLO ogre.sisk.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751936Ab1BVVJ0 (ORCPT ); Tue, 22 Feb 2011 16:09:26 -0500 From: "Rafael J. Wysocki" To: Martin Steigerwald Subject: Re: does hibernate to disk try hard enough to free memory? Date: Tue, 22 Feb 2011 22:09:15 +0100 User-Agent: KMail/1.13.5 (Linux/2.6.38-rc5+; KDE/4.4.4; x86_64; ; ) Cc: Linux PM mailing list , LKML References: <201102222159.58546.Martin@lichtvoll.de> In-Reply-To: <201102222159.58546.Martin@lichtvoll.de> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-2" Content-Transfer-Encoding: 7bit Message-Id: <201102222209.15647.rjw@sisk.pl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1398 Lines: 33 On Tuesday, February 22, 2011, Martin Steigerwald wrote: > Hi! > > Since Radeon KMS I often have it that my ThinkPad T42 with 2 MiB of RAM is > not able to allocate memory for the hibernation image. Before KMS > hibernation only very rarely failed for that reason. > > Often I run without compositing at all as I believe this might spare some > pages as well. But this doesn't always help. > > It complains that to less pages could be freed. For example with kernel > 2.6.37: > > Feb 16 00:15:00 shambhala kernel: PM: Creating hibernation image: > Feb 16 00:15:00 shambhala kernel: PM: Need to copy 186577 pages > Feb 16 00:15:00 shambhala kernel: PM: Normal pages needed: 114411 + 1024, > available pages: 112767 > Feb 16 00:15:00 shambhala kernel: PM: Not enough free memory > Feb 16 00:15:00 shambhala kernel: PM: Error -12 creating hibernation image > Feb 16 00:15:00 shambhala kernel: Extended CMOS year: 2000 > Feb 16 00:15:00 shambhala kernel: ACPI: Waking up from system sleep state > S4 > Feb 16 00:15:00 shambhala kernel: PM: early recover of devices complete > after 0.376 msecs What's the value in /sys/power/image_size? Rafael -- 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/