Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265343AbUAAJf4 (ORCPT ); Thu, 1 Jan 2004 04:35:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265346AbUAAJf4 (ORCPT ); Thu, 1 Jan 2004 04:35:56 -0500 Received: from derbian.org ([213.139.167.3]:31364 "EHLO mail.derbian.org") by vger.kernel.org with ESMTP id S265343AbUAAJfz (ORCPT ); Thu, 1 Jan 2004 04:35:55 -0500 Date: Thu, 1 Jan 2004 09:35:53 +0000 From: Joonas Kortesalmi To: linux-kernel@vger.kernel.org Subject: swapper: page allocation failure. order:3, mode:0x20 Message-ID: <20040101093553.GA24788@derbian.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1957 Lines: 47 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 After running 2.6.0 on a server for a few days, I met an interesting and annoying problem. I was playing with NFS over gigabit ethernet (e1000) and it was a bit slow. I tried to find out why by running top and I saw syslog-ng eating almost 10% of the 1,3GHz Duron. Looked at the log and there was a huge flood of these messages: swapper: page allocation failure. order:3, mode:0x20 irssi: page allocation failure. order:3, mode:0x20 swapper: page allocation failure. order:3, mode:0x20 vim: page allocation failure. order:3, mode:0x20 swapper: page allocation failure. order:3, mode:0x20 most of the messages starting with swapper. After a quick google search it looks like this kind of a problem existed in a bit older 2.5/2.6 serie kernels. It looks like it's still with us. Linux hamsu.org 2.6.0 #1 Mon Dec 29 21:07:28 EET 2003 i686 AMD Duron(tm) processor AuthenticAMD GNU/Linux Shortly about the hardware of the machine in case it would matter: AMD Duron 1,3GHz CPU, 768MB of RAM, Intel PRO/1000MT Desktop and Realtek 8139C NICs. Pre-empt was disabled in the kernel config and the kernel didn't have any extra patches. A pure vanilla kernel. I'm not a subscriber so please CC me a copy of messages related to the subject. I'm not sure if I can help much looking at the insides of the kernel, but I will try my best answering any questions about this. - -- Joonas OH8GDV (ham call sign) OpenPGP: 0x5F72BE43 ( 0B37 05E0 0FB4 EB2E 161C DCE6 7F7B C645 5F72 BE43 ) -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) iD8DBQE/8+lzf3vGRV9yvkMRAgkIAJ4tjyWtfeDmXCaM0s6w9+ofYLKktACgt+I5 MhYxd+KeJS8QFOjPbtOmykk= =75d0 -----END PGP SIGNATURE----- - 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/