Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262277AbUCEJUl (ORCPT ); Fri, 5 Mar 2004 04:20:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262269AbUCEJUl (ORCPT ); Fri, 5 Mar 2004 04:20:41 -0500 Received: from ns.virtualhost.dk ([195.184.98.160]:39570 "EHLO virtualhost.dk") by vger.kernel.org with ESMTP id S262277AbUCEJUj (ORCPT ); Fri, 5 Mar 2004 04:20:39 -0500 Date: Fri, 5 Mar 2004 10:20:29 +0100 From: Jens Axboe To: Kyle Wong Cc: linux-kernel@vger.kernel.org Subject: Re: questions about io scheduler Message-ID: <20040305092029.GB10923@suse.de> References: <088201c40293$5b27ce80$9c02a8c0@southa.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <088201c40293$5b27ce80$9c02a8c0@southa.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 617 Lines: 19 On Fri, Mar 05 2004, Kyle Wong wrote: > 1. Is anticipatory io scheduler + echo 0 > > /sys/block/hd*/queue/iosched/antic_expire = deadline scheduler? It isn't 100% the same, but very very close. > 2. Does io scheduler works with md RAID? Correct me if I'm wrong, > io-schedular <--> md driver <--> harddisks. No, it's md -> io scheduler -> hard drive. -- Jens Axboe - 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/