From owner-freebsd-virtualization@FreeBSD.ORG Thu Jan 16 16:41:59 2014 Return-Path: Delivered-To: freebsd-virtualization@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id B71C6A31 for ; Thu, 16 Jan 2014 16:41:59 +0000 (UTC) Received: from mail-wi0-x22e.google.com (mail-wi0-x22e.google.com [IPv6:2a00:1450:400c:c05::22e]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 4F8C11ECB for ; Thu, 16 Jan 2014 16:41:59 +0000 (UTC) Received: by mail-wi0-f174.google.com with SMTP id g10so5910655wiw.7 for ; Thu, 16 Jan 2014 08:41:57 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=from:content-type:content-transfer-encoding:subject:message-id:date :to:mime-version; bh=uoEzRfkB8GbVVDRTYfd8aILolNTxLdPWJQ/F84xuV8A=; b=xamOpwUt5D2uIbpgDeZN72J8+vWSNth5BeqFoe331yTBKTbyaR5DGxEGrFxzlwNrWN wx+dAT2RwdgpsPmOPbfn2CkcAdw6za/vNTGaHOfXdW6Uh6jAVbhx9AFuxG42BJ0mnOM3 nfN6T1dyyCgX+AHnGaUbmyQy5+qnFF7saZ0xoc5U7ysyvexcmjS5FhZ0boGquGLwO2gH +vL0sV5iEtsaNJ0JG/kOsit9ETMoT/3CgAtnFQ9OM8fzUWR55cOsa4G1JwvstCmJGaXN LCQil3NN4MlmOqBwoR8AHTD/RxiRsJkxF5XZrBp4n6ThlwZ9OtKeF4P60cji6jemcBpl jtqw== X-Received: by 10.194.185.205 with SMTP id fe13mr9443623wjc.23.1389890517474; Thu, 16 Jan 2014 08:41:57 -0800 (PST) Received: from [10.0.1.109] (21.199-241-81.adsl-dyn.isp.belgacom.be. [81.241.199.21]) by mx.google.com with ESMTPSA id ci4sm6749113wjc.21.2014.01.16.08.41.56 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 16 Jan 2014 08:41:57 -0800 (PST) From: Sydney Meyer Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Subject: Xen PVHVM with FreeBSD10 Guest Message-Id: <9DF57091-9957-452D-8A15-C2267F66ABEC@googlemail.com> Date: Thu, 16 Jan 2014 17:41:55 +0100 To: freebsd-virtualization@freebsd.org Mime-Version: 1.0 (Mac OS X Mail 7.1 \(1827\)) X-Mailer: Apple Mail (2.1827) X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "Discussion of various virtualization techniques FreeBSD supports." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 16 Jan 2014 16:41:59 -0000 Hello everyone, does someone know how to check if the paravirtualized I/O drivers from = Xen are loaded/working in FreeBSD 10? To my understanding it isn't = necessary anymore to compile a custom kernel with PVHVM enabled, right? = In /var/log/messages/ I can see the XN* and XBD* devices and the network = performance is very good (saturated Gb) compared to qemu-emulated, but = the disk performance is not as well, infact, it is even slower than = emulated with qemu (0.10.2). I did some test with dd and bonnie++, = turned caching on the host off and tried to directly sync to disk, = PVonHVM is averagely 15-20 % slower than QEMU at throughput. Both VM's = are running on the same host on a Xen 4.1 Hypervisor with QEMU 0.10.2 on = a Debian Linux 3.2 Kernel as Dom0.=