From owner-freebsd-fs@FreeBSD.ORG Sun Jan 13 23:52:47 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 24D7070F for ; Sun, 13 Jan 2013 23:52:47 +0000 (UTC) (envelope-from nicolas@i.0x5.de) Received: from n.0x5.de (n.0x5.de [217.197.85.144]) by mx1.freebsd.org (Postfix) with ESMTP id B417D700 for ; Sun, 13 Jan 2013 23:52:46 +0000 (UTC) Received: by pc5.i.0x5.de (Postfix, from userid 1003) id 3Ykvkb3jr4z7ySF; Mon, 14 Jan 2013 00:52:39 +0100 (CET) Date: Mon, 14 Jan 2013 00:52:39 +0100 From: Nicolas Rachinsky To: Steven Hartland Subject: Re: slowdown of zfs (tx->tx) Message-ID: <20130113235239.GA16318@mid.pc5.i.0x5.de> References: <20130108174225.GA17260@mid.pc5.i.0x5.de> <20130109162613.GA34276@mid.pc5.i.0x5.de> <20130110193949.GA10023@mid.pc5.i.0x5.de> <20130111111147.GA34160@mid.pc5.i.0x5.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Powered-by: FreeBSD X-Homepage: http://www.rachinsky.de X-PGP-Keyid: 887BAE72 X-PGP-Fingerprint: 039E 9433 115F BC5F F88D 4524 5092 45C4 887B AE72 X-PGP-Keys: http://www.rachinsky.de/nicolas/gpg/nicolas_rachinsky.asc User-Agent: Mutt/1.5.21 (2010-09-15) Cc: freebsd-fs X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 13 Jan 2013 23:52:47 -0000 * Steven Hartland [2013-01-11 13:58 -0000]: > TBH looks like your just saturating your disks with the number of IOP's > your doing. But now a backup takes forever (16hours and more) that took less than 30 minutes two weeks ago. I duplicated the complete setup to another (slower) server. There the backups are slower than they were on this machine, but they are much faster than on this machine. Nicolas -- http://www.rachinsky.de/nicolas