Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 26 Sep 2002 11:04:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 26 Sep 2002 11:04:40 -0400 Received: from perninha.conectiva.com.br ([200.250.58.156]:50848 "EHLO perninha.conectiva.com.br") by vger.kernel.org with ESMTP id ; Thu, 26 Sep 2002 11:04:39 -0400 Date: Thu, 26 Sep 2002 12:09:44 -0300 (BRT) From: Rik van Riel X-X-Sender: riel@duckman.distro.conectiva To: Daniel Pittman Cc: Jens Axboe , Linux Kernel Subject: Re: [PATCH] deadline io scheduler In-Reply-To: <87k7l95f5a.fsf@enki.rimspace.net> Message-ID: X-spambait: aardvark@kernelnewbies.org X-spammeplease: aardvark@nl.linux.org MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 893 Lines: 28 On Thu, 26 Sep 2002, Daniel Pittman wrote: > > read:write, ie no read preference. A silly value of 0 would give you > > write preference, always. > How much is it going to hurt a filesystem like ext[23] if that value is > set to zero while doing large streaming writes -- something like > (almost) uncompressed video at ten to twenty meg a second, for > gigabytes? It depends, if you've got 2 video streams to the same filesystem and one needs to read a block bitmap in order to allocate more disk blocks you lose... regards, Rik -- A: No. Q: Should I include quotations after my reply? http://www.surriel.com/ http://distro.conectiva.com/ - 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/