From owner-freebsd-stable@FreeBSD.ORG Sat Dec 22 13:34:13 2007 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 5B3B916A418 for ; Sat, 22 Dec 2007 13:34:13 +0000 (UTC) (envelope-from brett@lariat.net) Received: from lariat.net (lariat.net [66.119.58.2]) by mx1.freebsd.org (Postfix) with ESMTP id E1D6413C4E3 for ; Sat, 22 Dec 2007 13:34:12 +0000 (UTC) (envelope-from brett@lariat.net) Received: from anne-o1dpaayth1.lariat.org (IDENT:ppp1000.lariat.net@lariat.net [66.119.58.2]) by lariat.net (8.9.3/8.9.3) with ESMTP id GAA15374; Sat, 22 Dec 2007 06:23:34 -0700 (MST) Message-Id: <200712221323.GAA15374@lariat.net> X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Sat, 22 Dec 2007 06:23:32 -0700 To: Pieter de Goeje , freebsd-stable@freebsd.org From: Brett Glass In-Reply-To: <200712221321.22666.pieter@degoeje.nl> References: <200712220531.WAA09277@lariat.net> <200712221321.22666.pieter@degoeje.nl> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Cc: stable@freebsd.org Subject: Re: SMP on FreeBSD 6.x and 7.0: Worth doing? 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, 22 Dec 2007 13:34:13 -0000 At 05:21 AM 12/22/2007, Pieter de Goeje wrote: >Since you're using the fs as a cache, I presume it wouldn't be a big problem >if the data was lost by a power outage (or crash). If so, you can try the >async mount option to seriously increase fs performance. Linux also speeds up if you try mounting the volume -async, maintaining a similar advantage. And mounting the volume -async is a bit dangerous, because the cache can become very inconsistent during a crash.... SoftUpdates is generally what's recommended. --Brett Glass