From owner-freebsd-emulation@FreeBSD.ORG Tue Feb 8 03:11:54 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 6F5F2106564A for ; Tue, 8 Feb 2011 03:11:54 +0000 (UTC) (envelope-from amvandemore@gmail.com) Received: from mail-fx0-f54.google.com (mail-fx0-f54.google.com [209.85.161.54]) by mx1.freebsd.org (Postfix) with ESMTP id 06BE08FC0A for ; Tue, 8 Feb 2011 03:11:53 +0000 (UTC) Received: by fxm16 with SMTP id 16so5866931fxm.13 for ; Mon, 07 Feb 2011 19:11:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:date:message-id:subject:from:to :content-type; bh=V9qkN8N43zjF5OaS/giMP2gKzbnuDLggyKay53OSpE8=; b=R78DFqAy+SkXqLvjtL1LrXQ6rxLOEItR3uv/w3XfKgi/fMHt3iulYzyqYNR9bpE7GA JcWu40c1BNFq6nDJRsa5/VM7xMFkWQFI2/NxaejhEP8KemU83+R7Ua49gSOPbPkjgksV nxAj0JorfyTCRxaqwnqqRuWcet8EXLtr2eQ1s= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=hX9sjEd30oK2Ahm21B4eg/B+Sf8WlVEJjdAWJizUEMH6ycscA1jABQkQYVUgNTasoa 9ZEMDCM6ZFTh7i58HABm+dlfYYgrlk0AOLzOex0NgQdJNQXcdIDsFAxCmpUEC8raT2JN DqWT8ummwwGzNjjclVvNt1ss5vaHPrIIv/cDg= MIME-Version: 1.0 Received: by 10.223.85.203 with SMTP id p11mr15379815fal.108.1297109945942; Mon, 07 Feb 2011 12:19:05 -0800 (PST) Received: by 10.223.114.4 with HTTP; Mon, 7 Feb 2011 12:19:05 -0800 (PST) Date: Mon, 7 Feb 2011 14:19:05 -0600 Message-ID: From: Adam Vande More To: freebsd-emulation@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: VirtualBox native iscsi initiator performance is bad X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Development of Emulators of other operating systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Feb 2011 03:11:54 -0000 Using the native Vbox iscsi initiator for very simple tests I'm getting slightly less than 20 MB/s write speed and VM takes a long time to boot because of DMA LBA errors are being reported on the iscsi/sata disk. If I mount the iscsi on the host, I get close to 50 MB/s and then if I map that to a Virtualbox raw disk, and stick in a VM I get around 42 MB/s write speed. I haven't done any tuning on iscsi target so perhaps that could improve things, but I'm concerned about the huge drop off in performance and reliability issues with the Vbox native version. Does anyone have insight into this? virtualbox-ose-3.2.12 istgt-20110103 These are both recent 8-STABLE versions of Virtualbox. -- Adam Vande More