From owner-freebsd-fs@FreeBSD.ORG Mon Apr 5 06:56:34 2010 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C6C2E106566B for ; Mon, 5 Apr 2010 06:56:34 +0000 (UTC) (envelope-from nekoexmachina@gmail.com) Received: from fg-out-1718.google.com (fg-out-1718.google.com [72.14.220.155]) by mx1.freebsd.org (Postfix) with ESMTP id 521EF8FC12 for ; Mon, 5 Apr 2010 06:56:34 +0000 (UTC) Received: by fg-out-1718.google.com with SMTP id d23so1008903fga.13 for ; Sun, 04 Apr 2010 23:56:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:date:from:to:cc:subject :message-id:references:mime-version:content-type:content-disposition :in-reply-to:user-agent; bh=SJb8XVRnlmdqTx4aF5IiRpExskpCCgO6y+yIx5PDJxo=; b=cs5Jdu9CwMtJZj55y1+A00wOfwGeBCq/BtmgaYpHlQBRSvKP+wyLgYqUEdnxORvPxF HjrkGiHfkyttKnc4ni25e3SZ1JqOMgUX5x1FuuG3HNFRCxQuVZ9FUM/B8vYbfMQKRaVV YU2ox2UDWvlrHPpBSpoSyiljiuSP7jgEstAKs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=date:from:to:cc:subject:message-id:references:mime-version :content-type:content-disposition:in-reply-to:user-agent; b=xLpMUqt5+JL683aHyca7EkYqx/qVGvgyfMDuftxVN3eT4ZfyUP3l33t/Naz1MxCS+x yyrl9xoAhcbSninzHuyssWHztHTQPriNk7Aga+L2jy8coZDR7Zn58Rg5/g+TQqN7w5i0 U6RlBEYFZ5WkAa1gKFfGP8I2nnNJws7b2nHnA= Received: by 10.87.65.38 with SMTP id s38mr8264334fgk.71.1270450593289; Sun, 04 Apr 2010 23:56:33 -0700 (PDT) Received: from localhost ([188.134.12.208]) by mx.google.com with ESMTPS id 28sm11962223fkx.36.2010.04.04.23.56.32 (version=TLSv1/SSLv3 cipher=RC4-MD5); Sun, 04 Apr 2010 23:56:32 -0700 (PDT) Date: Mon, 5 Apr 2010 10:55:00 +0400 From: Mikle Krutov To: Wes Morgan Message-ID: <20100405065500.GB48707@takino.homeftp.org> References: <20100404191844.GA5071@takino.homeftp.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Cc: freebsd-fs@freebsd.org Subject: Re: Strange ZFS performance X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 05 Apr 2010 06:56:34 -0000 On Sun, Apr 04, 2010 at 10:08:21PM -0500, Wes Morgan wrote: > On Sun, 4 Apr 2010, Mikle wrote: > > > Hello, list! I've got some strange problem with one-disk zfs-pool: > > read/write performance for the files on the fs (dd if=/dev/zero > > of=/mountpoint/file bs=4M count=100) gives me only 2 MB/s, while reading > > from the disk (dd if=/dev/disk of=/dev/zero bs=4M count=100) gives me > > ~70MB/s. pool is about 80% full; PC with the pool has 2GB of ram (1.5 of > > which is free); i've done no tuning in loader.conf and sysctl.conf for > > zfs. In dmesg there is no error-messages related to the disk (dmesg|grep > > ^ad12); s.m.a.r.t. seems OK. Some time ago disk was OK, nothing in > > software/hardware has changed from that day. Any ideas what could have > > happen to the disk? > > Has it ever been close to 100% full? How long has it been 80% full and > what kind of files are on it, size wise? No, it was never full. It is at 80% for about a week maybe. Most of the files are the video of the 200MB - 1.5GB size per file. -- Wbr, Krutov Mikle