From owner-freebsd-current@FreeBSD.ORG Mon Apr 16 17:43:55 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 151CE16A406 for ; Mon, 16 Apr 2007 17:43:55 +0000 (UTC) (envelope-from Thomas.Sparrevohn@btinternet.com) Received: from smtp807.mail.ird.yahoo.com (smtp807.mail.ird.yahoo.com [217.146.188.67]) by mx1.freebsd.org (Postfix) with SMTP id 321F413C465 for ; Mon, 16 Apr 2007 17:43:52 +0000 (UTC) (envelope-from Thomas.Sparrevohn@btinternet.com) Received: (qmail 41468 invoked from network); 16 Apr 2007 17:17:12 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btinternet.com; h=Received:X-YMail-OSG:From:To:Subject:Date:User-Agent:Cc:References:In-Reply-To:MIME-Version:Content-Disposition:Message-Id:Content-Type:Content-Transfer-Encoding; b=xR6VKYv9uJWHNPOaXXGlxgWbRxokR+4hMjT3fWUdt87s8N6SVoUWuSjkAanMqMF7n405lEUc2f8Tz/vvLt+wKOHlAH3vAoCL4y4x56ajo7MMSU8HIISqRufbKR+oYJzDeKjbGTUYTN/T1mbbk/VFOzOdPKggKZnQzaP6XT6YDUA= ; Received: from unknown (HELO w2fzz0vc03.aah-go-on.com) (thomas.sparrevohn@btinternet.com@86.133.53.159 with login) by smtp807.mail.ird.yahoo.com with SMTP; 16 Apr 2007 17:17:12 -0000 X-YMail-OSG: vCU8xMkVM1mhNZLjk4_t8udHUSDku_EdEU_JbFSrph58VRXFK7xyJVzgAabUH_l9WdX6Oj5uBw-- From: Thomas Sparrevohn To: freebsd-current@freebsd.org Date: Mon, 16 Apr 2007 18:17:12 +0100 User-Agent: KMail/1.9.6 References: <200704161028.l3GASo1W010585@peedub.jennejohn.org> In-Reply-To: <200704161028.l3GASo1W010585@peedub.jennejohn.org> MIME-Version: 1.0 Content-Disposition: inline Message-Id: <200704161817.12442.Thomas.Sparrevohn@btinternet.com> Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Cc: Subject: Re: Some comments on 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: Mon, 16 Apr 2007 17:43:55 -0000 On Monday 16 April 2007 11:28:50 Gary Jennejohn wrote: > > Is there any ZFS setting analogous to async which I could use to speed up > transfers? My system shows significant worse performance with ZFS - I suspect that this is because the devices are part of a ATAPI-RAID 0 already but here is the story - A UFS + Softupdates - make -j 4 buildworld - app. 24 Min (Debugging kernel) ZFS same command but with usr/obj on ZFS make -j 4 buildworld - app. 1h12m The weird thing is that one sees some fantastic peak transfer numbers e.g. up to 112MB/s - Compression is off