From owner-freebsd-stable@FreeBSD.ORG Sat Feb 28 06:47:15 2009 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1F053106564A for ; Sat, 28 Feb 2009 06:47:15 +0000 (UTC) (envelope-from ota@j.email.ne.jp) Received: from mail1.asahi-net.or.jp (mail1.asahi-net.or.jp [202.224.39.197]) by mx1.freebsd.org (Postfix) with ESMTP id E6FA58FC14 for ; Sat, 28 Feb 2009 06:47:14 +0000 (UTC) (envelope-from ota@j.email.ne.jp) Received: from localhost (pool-70-20-228-87.phil.east.verizon.net [70.20.228.87]) by mail1.asahi-net.or.jp (Postfix) with ESMTP id 67E2D3FBC8 for ; Sat, 28 Feb 2009 15:47:13 +0900 (JST) Date: Sat, 28 Feb 2009 01:47:07 -0500 From: Yoshihiro Ota To: freebsd-stable@freebsd.org Message-Id: <20090228014707.6129a1bb.ota@j.email.ne.jp> X-Mailer: Sylpheed 2.6.0 (GTK+ 2.12.11; i386-portbld-freebsd7.1) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Subject: Question about disk schedulers X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 28 Feb 2009 06:47:15 -0000 Hi, Luigi and Fabio: I have a question about the GEOM disk scheduler you announed a while ago. http://lists.freebsd.org/pipermail/freebsd-stable/2009-January/047597.html Can you tell me how does the scheduler interact with gjournal? Do you expect to improve response time even if used together with gjounral or to interfere each other? As I only had a journaled partition available for an experiment, I tried this combination on 7.1-RELEASE but it paniced 4 times out of 5 at attempts as soon as I mounted. Thanks, Hiro