From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id 3D0E76B0023 for ; Thu, 5 May 2011 17:50:00 -0400 (EDT) Received: from imap1.linux-foundation.org (imap1.linux-foundation.org [140.211.169.55]) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p45Lnv2X004738 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Thu, 5 May 2011 14:49:57 -0700 Received: from akpm.mtv.corp.google.com (localhost [127.0.0.1]) by imap1.linux-foundation.org (8.13.5.20060308/8.13.5/Debian-3ubuntu1.1) with SMTP id p45LhhH1004740 for ; Thu, 5 May 2011 14:43:43 -0700 Date: Thu, 5 May 2011 14:43:43 -0700 From: Andrew Morton Subject: Re: [Bugme-new] [Bug 34132] New: System is unresponsive while using dd to copy DVD ISO to USB stick/key Message-Id: <20110505144343.7c98bfce.akpm@linux-foundation.org> In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org In case anyone was wondering if we've stopped sucking yet. On Sat, 30 Apr 2011 16:12:15 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=34132 > > Summary: System is unresponsive while using dd to copy DVD ISO > to USB stick/key > Product: IO/Storage > Version: 2.5 > Kernel Version: 2.6.38.2 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: high > Priority: P1 > Component: Other > AssignedTo: io_other@kernel-bugs.osdl.org > ReportedBy: jlp.bugs@gmail.com > Regression: No > > > When I use > > dd if= of= > > The system becomes very unresponsive. X is almost completely unusable, maybe > you can move a mouse for some time but click do nothing. Even togling the Caps > Lock doesn't do anything. Trying to SSH is also almost impossible during this. > System is like this all the time while using the dd command. After it finishes > system again becomes responsive. I've noticed this on two of my computers: > 1: AMD Athlon 64 3000+, 2 GB of memory, kernel 2.6.38.2 > 2: AMD Athlon II P320 Dual-Core, 4 GB of memory, kernel 2.6.39-rc2 > The USB key is this one: > http://www.takems.com/products.php?categ=usb&prod=MEM-Drive_Easy_II > > What I expected was that the doing dd wouldn't have a noticable impact on > responsivness of the rest of the system. > Maybe it's not VM-related. This time. Maybe. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org