From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264811AbUE0PpN (ORCPT ); Thu, 27 May 2004 11:45:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264821AbUE0PpN (ORCPT ); Thu, 27 May 2004 11:45:13 -0400 Received: from 8.75.30.213.rev.vodafone.pt ([213.30.75.8]:48652 "EHLO odie.graycell.biz") by vger.kernel.org with ESMTP id S264811AbUE0PpK (ORCPT ); Thu, 27 May 2004 11:45:10 -0400 Subject: Process hangs on blk_congestion_wait copying large file to cifs filesystem From: Nuno Ferreira To: Linux Kernel Content-Type: text/plain Organization: Graycell Date: Thu, 27 May 2004 16:45:06 +0100 Message-Id: <1085672706.4350.9.camel@taz.graycell.biz> Mime-Version: 1.0 X-Mailer: Evolution 1.5.8 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 27 May 2004 15:41:19.0648 (UTC) FILETIME=[0E299A00:01C44401] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, I'm trying to copy a large file (200Mb or bigger) from an ext3 filesystem to a windows share mounted using CIFS and the cp process hangs, sometimes for a long time (several minutes). Calling ps, I can see that it's blocking on blk_congestion_wait. Trying to edit a file on the same ext3 filesystem using vi blocks on the same function. However, during that that same time that vi and cp were blocked, I was able to do a "find /usr/share/doc" and it completed normally, in a few seconds. Eventually the copy succeeds but it takes a long time (20 minutes to copy 200Mb) and the computer is unusable during most of that time. This is copying from my laptop (IDE disk), the network card is a RTL8139 using 8139cp drivers. Is someone seeing a similiar problem? What extra info is needed to debug it? Thanks -- Nuno Ferreira