From: Mike Galbraith Subject: Re: [ext3][kernels >= 2.6.20.7 at least] KDE going comatose when FS is under heavy write load (massive starvation) Date: Fri, 27 Apr 2007 12:17:45 +0200 Message-ID: <1177669065.3260.2.camel@Homer.simpson.net> References: <1177660767.6567.41.camel@Homer.simpson.net> <20070427013350.d0d7ac38.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: LKML , Linus Torvalds , Jens Axboe , "linux-ext4@vger.kernel.org" To: Andrew Morton Return-path: Received: from mail.gmx.net ([213.165.64.20]:56076 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1755560AbXD0KRs (ORCPT ); Fri, 27 Apr 2007 06:17:48 -0400 In-Reply-To: <20070427013350.d0d7ac38.akpm@linux-foundation.org> Sender: linux-ext4-owner@vger.kernel.org List-Id: linux-ext4.vger.kernel.org On Fri, 2007-04-27 at 01:33 -0700, Andrew Morton wrote: > Another livelock possibility is that bonnie is redirtying pages faster than > commit can write them out, so commit got livelocked: > > When I was doing the original port-from-2.2 I found that an application > which does > > for ( ; ; ) > pwrite(fd, "", 1, 0); > > would permanently livelock the fs. I fixed that, but it was six years ago, > and perhaps we later unfixed it. Well, box doesn't seem the least bit upset after quite a while now, so I guess it didn't get unfixed. -Mike