From owner-freebsd-virtualization@FreeBSD.ORG Fri Nov 14 01:33:18 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 TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 25ACC293 for ; Fri, 14 Nov 2014 01:33:18 +0000 (UTC) Received: from mail1.bur200.uecomm.net.au (mail1.bur200.uecomm.net.au [218.185.0.70]) by mx1.freebsd.org (Postfix) with ESMTP id D6F6675B for ; Fri, 14 Nov 2014 01:33:16 +0000 (UTC) Received: from mail.flexibledrive.com.au (unknown [115.186.196.106]) by mail1.bur200.uecomm.net.au (Postfix) with ESMTP id E658CD528 for ; Fri, 14 Nov 2014 12:33:06 +1100 (EST) Received: from localhost (localhost.localdomain [127.0.0.1]) by mail.flexibledrive.com.au (Postfix) with ESMTP id 81AD3E6B7B for ; Fri, 14 Nov 2014 12:33:06 +1100 (EST) X-Virus-Scanned: amavisd-new at fdrive.com.au Received: from mail.flexibledrive.com.au ([127.0.0.1]) by localhost (mail.flexibledrive.com.au [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id c+mZkDu5dZMD for ; Fri, 14 Nov 2014 12:32:58 +1100 (EST) Received: from ws-pross.vv.fda (ws-pross.vv.fda [192.168.50.199]) by mail.flexibledrive.com.au (Postfix) with ESMTPS id 1DAEBE6B78 for ; Fri, 14 Nov 2014 12:32:58 +1100 (EST) Date: Fri, 14 Nov 2014 12:32:57 +1100 (AEDT) From: Peter Ross X-X-Sender: petros@linux-vic-05.vv.fda To: freebsd-virtualization@freebsd.org Subject: VirtualBox performance Message-ID: User-Agent: Alpine 2.11 (LRH 23 2013-08-11) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; format=flowed; charset=US-ASCII X-BeenThere: freebsd-virtualization@freebsd.org X-Mailman-Version: 2.1.18-1 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: Fri, 14 Nov 2014 01:33:18 -0000 Hi all, I am running VirtualBox on a new server (a Dell T620). Inside is Oracle Linux. I run a Java app and it is very slow to start. Memory should not be an issue. I have 32 GB and 8 GB for the VM. The server has 2 Xeon CPUs with 4 core each (hypertthreated so VBox sees 16 CPUs). I do not see any difference between using 1 CPU or 16 for the VM.. Interestingly all the host CPUs are 60-70% in system calls when I run it on 16 CPUs, according to top. I am tempted to experiment with CPU sets, btw. I wonder whether VirtualBox and multiple CPUs are a good mix at all.. Do you have any recommendations how to speed up my VM and Java? Thank you Peter