Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 11 Nov 2001 06:45:01 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 11 Nov 2001 06:44:51 -0500 Received: from rztsun.rz.tu-harburg.de ([134.28.200.14]:4486 "EHLO rztsun.rz.tu-harburg.de") by vger.kernel.org with ESMTP id ; Sun, 11 Nov 2001 06:44:42 -0500 Date: Sun, 11 Nov 2001 12:41:34 +0100 To: linux-kernel@vger.kernel.org, ReiserFS Mailingliste Subject: NFS dropouts with <=2.4.15pre1 + ReiserFS Message-ID: <20011111124134.E6421@jensbenecke.de> Mail-Followup-To: linux-kernel@vger.kernel.org, ReiserFS Mailingliste Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.3.15i X-FAQ-is-At: http://www.linuxfaq.de/ X-No-Archive: Yes X-Operating-System: Linux 2.4.15-pre1-jb-gr From: Jens Benecke Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, both to linux-kernel and reiserfs-list because currently I don't know who to blame. It should be related to ReiserFS + NFS however, because I can FTP between the systems and get 8-9MByte/sec. I have two machines, ds9 (workstation) and server (well..), running 2.4.15pre1. The server was patched with grsecurity (www.grsecurity.net), the workstation was patched with Win4lin (commercial, www.netraverse.com). As I said, FTP works fine. But when I copy something via NFS, performance is about a third to a fifth of the FTP performance - AND, from time to time (I'd say every 200-300MByte) NFS throughput drops out completely. I turned on NFSd debugging and got lots and lots of "fh_verify", "fh_compose" etc messages in the kernel and found something very curious: Whenever my iptables packet filter would log denied packets, NFS would drop out for a couple seconds to a couple minutes - then resume operations. My NFS client told me "nfs server not responding, NFS server OK" a couple times. This seems reproducable with a little effort - so I'd be happy to help debugging this (and the bad performance ;) if anybody tells me where to start. As I said, with 'echo 9 > nfsd_debug' I got megabytes of logs filled with nfsd_dispatch, fh_verify, fh_compose, last message repeated 295 times, etc. but nothing that (for me) pointed to an error situation. The same happened with all 2.4 kernels I tried so far, as far as I can remember. Thanks in advance! -- Jens Benecke ???????? http://www.hitchhikers.de/ - Europas Mitfahrzentrale - 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/