From owner-freebsd-questions@FreeBSD.ORG Sun Apr 27 05:11:14 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id A52D3106564A for ; Sun, 27 Apr 2008 05:11:14 +0000 (UTC) (envelope-from freebsd@sopwith.solgatos.com) Received: from parsely.rain.com (parsely.rain.com [199.26.172.196]) by mx1.freebsd.org (Postfix) with ESMTP id 28BF88FC0A for ; Sun, 27 Apr 2008 05:11:14 +0000 (UTC) (envelope-from freebsd@sopwith.solgatos.com) Received: from sopwith.solgatos.com (uucp@localhost) by parsely.rain.com (8.11.4/8.11.4) with UUCP id m3R5BCk69590 for freebsd-questions@freebsd.org; Sat, 26 Apr 2008 22:11:12 -0700 (PDT) (envelope-from freebsd@sopwith.solgatos.com) Received: from localhost by sopwith.solgatos.com (8.8.8/6.24) id FAA05477; Sun, 27 Apr 2008 05:05:29 GMT Message-Id: <200804270505.FAA05477@sopwith.solgatos.com> To: freebsd-questions@freebsd.org Date: Sat, 26 Apr 2008 22:05:29 +0100 From: Dieter Subject: Re: Sidetracked: why gjournal over soft-updates (Was: Re: UFS2 Journaling implementation detail) X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: freebsd@sopwith.solgatos.com List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 27 Apr 2008 05:11:14 -0000 > SU requires that data it once sends to the drive gets written > immediately, not cached by the drive. Modern desktop drives > don't do that They do if you set them to write-through cache instead of write-back cache. Modern SATA drives also provide NCQ. When is FreeBSD going to support NCQ?