From owner-freebsd-current@FreeBSD.ORG Tue Jul 17 03:35:31 2007 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 5034F16A40D for ; Tue, 17 Jul 2007 03:35:31 +0000 (UTC) (envelope-from stevenschlansker@berkeley.edu) Received: from smtp-out1.berkeley.edu (smtp-out1.Berkeley.EDU [128.32.61.106]) by mx1.freebsd.org (Postfix) with ESMTP id 3A72713C4CE for ; Tue, 17 Jul 2007 03:35:31 +0000 (UTC) (envelope-from stevenschlansker@berkeley.edu) Received: from adsl-75-42-136-243.dsl.pltn13.sbcglobal.net ([75.42.136.243] helo=[192.168.42.3]) by fe2.calmail with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.67) (auth plain:stevenschlansker@berkeley.edu) (envelope-from ) id 1IAdqU-0006oL-9Y for freebsd-current@freebsd.org; Mon, 16 Jul 2007 20:35:31 -0700 Message-ID: <469C3900.5020703@berkeley.edu> Date: Mon, 16 Jul 2007 20:35:28 -0700 From: Steven Schlansker User-Agent: Thunderbird 1.5.0.12 (X11/20070604) MIME-Version: 1.0 CC: freebsd-current@freebsd.org References: <2978EDA9-D393-434C-B734-2DE188631761@berkeley.edu> In-Reply-To: X-Enigmail-Version: 0.94.2.0 OpenPGP: id=40BFF7A7; url=subkeys.pgp.net Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: Strange performance characteristics with ZFS X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 17 Jul 2007 03:35:31 -0000 Claus Guttesen wrote: >> I'm experiencing what (to me) seems to be strange performance with >> ZFS. I have it set up as follows: >> >> [steven@universe /universe]$ sudo zpool status >> pool: universe >> state: ONLINE >> I share it over NFS to a linux machine. I'm trying to write a very >> large (30GB) disk image to it over nfs, and it goes in short fits and >> bursts. >> >> It copies a few (mega?)bytes of data (not sure how much exactly), and >> top shows: > > How much ram is installed? > 2.5GB, with an Athlon64 3200+