From owner-freebsd-emulation@FreeBSD.ORG Sun May 1 02:41:14 2011 Return-Path: Delivered-To: freebsd-emulation@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 380B8106566B for ; Sun, 1 May 2011 02:41:14 +0000 (UTC) (envelope-from aqqa11@earthlink.net) Received: from elasmtp-kukur.atl.sa.earthlink.net (elasmtp-kukur.atl.sa.earthlink.net [209.86.89.65]) by mx1.freebsd.org (Postfix) with ESMTP id E739A8FC0C for ; Sun, 1 May 2011 02:41:13 +0000 (UTC) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=dk20050327; d=earthlink.net; b=CGnG3j7zhJfKgdbE3AfcxSduKyL3t4iQ+lF5Kj3AoYLaKN/gcS1DPstHUii/rufU; h=Message-ID:Date:From:Reply-To:To:Subject:Mime-Version:Content-Type:Content-Transfer-Encoding:X-Mailer:X-ELNK-Trace:X-Originating-IP; Received: from [209.86.224.28] (helo=mswamui-blood.atl.sa.earthlink.net) by elasmtp-kukur.atl.sa.earthlink.net with esmtpa (Exim 4.67) (envelope-from ) id 1QGMOZ-0007lK-3X for freebsd-emulation@freebsd.org; Sat, 30 Apr 2011 22:28:27 -0400 Received: from 96.242.250.147 by webmail.earthlink.net with HTTP; Sat, 30 Apr 2011 22:28:26 -0400 Message-ID: <6157936.1304216907022.JavaMail.root@mswamui-blood.atl.sa.earthlink.net> Date: Sat, 30 Apr 2011 22:28:26 -0400 (GMT-04:00) From: typo W To: freebsd-emulation@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Mailer: EarthLink Zoo Mail 1.0 X-ELNK-Trace: 2552ff5019365d7e94f5150ab1c16ac02930b881f11d255e96d5891b9c8072795c1255edc620fbf2350badd9bab72f9c350badd9bab72f9c350badd9bab72f9c X-Originating-IP: 209.86.224.28 Subject: virtualbox I/O 3 times slower than KVM? X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: typo W List-Id: Development of Emulators of other operating systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 01 May 2011 02:41:14 -0000 Hi, I'm brand new to virtualbox, so pardon me in case I made stupid mistakes. I created a FreeBSD guest out of the regular virtualbox port (3.2.12) on FreeBSD 8.2, then timed the copying of a 320MB binary file to another file, which took 4 seconds, ie, 80MB/s. On an identical hardware I created a CentOS guest out of KVM running on CentOS, and the same operation only takes 1 second. On both hosts, the copy takes 1 second. That is, virtualbox slowed the copying to 1/4 speed on my guest FreeBSD. Both hosts are Dell R710, with 6 x 600GB 15K SAS drives forming a RAID6 with R700 controller with 512MB cache. I'm testing in preparation of production servers, so would prefer regular ports, ie, 4.0.6 tar ball is out of question for now.