From owner-freebsd-stable@FreeBSD.ORG Wed Feb 10 00:55:18 2010 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 9BC3D1065697 for ; Wed, 10 Feb 2010 00:55:18 +0000 (UTC) (envelope-from emikulic@gmail.com) Received: from ipmail07.adl2.internode.on.net (ipmail07.adl2.internode.on.net [150.101.137.131]) by mx1.freebsd.org (Postfix) with ESMTP id 1B7838FC19 for ; Wed, 10 Feb 2010 00:55:17 +0000 (UTC) X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Av0EAPOOcUuWZZrw/2dsb2JhbACRAoljdK4PhwmIdoRUBI4a Received: from ppp154-240.static.internode.on.net ([150.101.154.240]) by ipmail07.adl2.internode.on.net with ESMTP; 10 Feb 2010 11:10:04 +1030 Received: by ppp154-240.static.internode.on.net (Poo-fix, from userid 1001) id 470755C44; Wed, 10 Feb 2010 11:40:03 +1100 (EST) Date: Wed, 10 Feb 2010 11:40:03 +1100 From: Emil Mikulic To: "Peter C. Lai" Message-ID: <20100210004003.GA2507@dmr.ath.cx> References: <4B6F9A8D.4050907@langille.org> <2e027be01002090451w2b4506a0ofb5ab55c647540a@mail.gmail.com> <2e027be01002090609y28be404dl1bb610d047b15f9b@mail.gmail.com> <2e027be01002090716y77213c45pb937e22151a2c238@mail.gmail.com> <20100209163155.GK4648@cesium.hyperfine.info> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100209163155.GK4648@cesium.hyperfine.info> User-Agent: Mutt/1.5.20 (2009-06-14) Cc: FreeBSD Stable Subject: Re: hardware for home use large storage 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: Wed, 10 Feb 2010 00:55:18 -0000 On Tue, Feb 09, 2010 at 11:31:55AM -0500, Peter C. Lai wrote: > Also does anybody know if benching dd if=/dev/zero onto a zfs volume that > has compression turned on might affect what dd (which is getting what it > knows from vfs/vmm) might report? Absolutely! Compression on: 4294967296 bytes transferred in 16.251397 secs (264282961 bytes/sec) 4294967296 bytes transferred in 16.578707 secs (259065276 bytes/sec) 4294967296 bytes transferred in 16.178586 secs (265472353 bytes/sec) 4294967296 bytes transferred in 16.069003 secs (267282747 bytes/sec) Compression off: 4294967296 bytes transferred in 58.248351 secs (73735432 bytes/sec)