From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1423091AbXD3HBi (ORCPT ); Mon, 30 Apr 2007 03:01:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161659AbXD3HBh (ORCPT ); Mon, 30 Apr 2007 03:01:37 -0400 Received: from brick.kernel.dk ([80.160.20.94]:7413 "EHLO kernel.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161656AbXD3HBh (ORCPT ); Mon, 30 Apr 2007 03:01:37 -0400 Date: Mon, 30 Apr 2007 08:57:19 +0200 From: Jens Axboe To: Mikulas Patocka Cc: Ingo Molnar , Linus Torvalds , Mike Galbraith , LKML , Andrew Morton Subject: Re: [ext3][kernels >= 2.6.20.7 at least] KDE going comatose when FS is under heavy write load (massive starvation) Message-ID: <20070430065719.GD21015@kernel.dk> References: <1177660767.6567.41.camel@Homer.simpson.net> <20070428163740.GA17061@elte.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Apr 28 2007, Mikulas Patocka wrote: > >So perhaps if there's any privileged reads going on then we should limit > >writes to a depth of 2 at most, with some timeout mechanism that would > > SCSI has a "high priority" bit in the command block, so you can just set > it --- but I am not sure how well do disks support it. I'd be surprised if it was useful. -- Jens Axboe