From owner-freebsd-questions@FreeBSD.ORG Sun Jun 8 19:11:00 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 2A1A51065670 for ; Sun, 8 Jun 2008 19:11:00 +0000 (UTC) (envelope-from cptsalek@gmail.com) Received: from yw-out-2324.google.com (yw-out-2324.google.com [74.125.46.29]) by mx1.freebsd.org (Postfix) with ESMTP id C4A678FC12 for ; Sun, 8 Jun 2008 19:10:59 +0000 (UTC) (envelope-from cptsalek@gmail.com) Received: by yw-out-2324.google.com with SMTP id 9so917206ywe.13 for ; Sun, 08 Jun 2008 12:10:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=Psnh4qD9J02e0Z4LiCfWwlgI1ddB0uRzsK7hwdolmlw=; b=EzY7yVDbl0/wJncuTKJhL7kKiaD2su9aDQQLefMcfOVsvKjl0rg4cJDxkYJ9A4D8qO mB8gK34Bgb5JFQW8CyH+YviW5M65fyH8ccrBbE2lu7R56U6y9egRPtsyd25iu2kfJda4 KZy6WRjUYtubb8rTP4cnOp3FVX3kYbAS6V1og= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=e33s7tkw1v78L9kSKsBy233KifG1FrRmBW9aMQQJpxkBoH8pr7PQevS+9Z5D7ICWZ5 BS8YMCEFvTtbVYtB2UJZqAY7b1gHV1zwO73d82suczj1GtUSAmijFUVcoqzIKScSByhb A4rj/E41iXpeue0dceeCz4ITOgV4+CWIxRaVM= Received: by 10.151.113.5 with SMTP id q5mr4740454ybm.120.1212952259059; Sun, 08 Jun 2008 12:10:59 -0700 (PDT) Received: by 10.150.155.3 with HTTP; Sun, 8 Jun 2008 12:10:59 -0700 (PDT) Message-ID: <14989d6e0806081210r6fec5a14y6473a26ba28a91f3@mail.gmail.com> Date: Sun, 8 Jun 2008 21:10:59 +0200 From: "Christian Walther" To: "Fabian Keil" In-Reply-To: <20080608162456.1c4949bc@fabiankeil.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline References: <1a5a68400806080604ped08ce8p120fc21107e7de81@mail.gmail.com> <20080608162456.1c4949bc@fabiankeil.de> Cc: =?ISO-8859-1?Q?Anders_H=E4ggstr=F6m?= , freebsd-questions@freebsd.org Subject: Re: FreeBSD + ZFS on a production server? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 08 Jun 2008 19:11:00 -0000 2008/6/8 Fabian Keil : > "Anders H=E4ggstr=F6m" wrote: > [...] > Just in case you assume that ZFS on OpenSolaris 2008.05 > would be superior to ZFS on FreeBSD, this hasn't been my > experience. > > On a system with an Athlon 1700+ and only 512 MB of RAM, > receiving snapshots on OpenSolaris renders the GUI pretty > much useless. > > On FreeBSD ZFS operations can cause delays as well, but it's > significantly better than on OpenSolaris, even though FreeBSD's > ZFS pool lies on a geli-encrypted gmirror while OpenSolaris uses > the disk directly. > This hasn't anything to do with ZFS but on the different configuration of the clockrate. FreeBSD uses 1000 ticks, while it's 500 on Solaris. This means that FreeBSD can switch to different tasks twice as fast than Solaris. For a server a high tick rate isn't necessary, so it doesn't matter really. And Solaris still is a server OS. If you're running a desktop it makes quite a difference, of course. Interesstingly enough PC BSD configures kern.clockrate to 2000.