From owner-freebsd-virtualization@FreeBSD.ORG Mon Feb 2 11:34:37 2015 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 82EBC3EC for ; Mon, 2 Feb 2015 11:34:37 +0000 (UTC) Received: from out3-smtp.messagingengine.com (out3-smtp.messagingengine.com [66.111.4.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4BA0A7B0 for ; Mon, 2 Feb 2015 11:34:36 +0000 (UTC) Received: from compute5.internal (compute5.nyi.internal [10.202.2.45]) by mailout.nyi.internal (Postfix) with ESMTP id BECE0206BB for ; Mon, 2 Feb 2015 06:34:30 -0500 (EST) Received: from frontend2 ([10.202.2.161]) by compute5.internal (MEProxy); Mon, 02 Feb 2015 06:34:30 -0500 DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=fastmail.fm; h= x-sasl-enc:date:from:to:cc:subject:message-id:in-reply-to :references:mime-version:content-type; s=mesmtp; bh=U3n4vxrk5frj AQ6wAMlHu7cSt2Y=; b=V1hepqLScboMvp0/Yal9vwIpZU2LS0tiv2GhPINCT4+I nxn5zsrOZZt++a+zRDdAAlPhcevDAx0WYv2QhHQ2de5wGK/2g0gVH5ekW28lQGzj L79VVE/IGWFOF3AVX5KdhwoBrOQHrTjv97MrC7ZsmAUUwVbRvV92y0uB7AJ6u3I= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=x-sasl-enc:date:from:to:cc:subject :message-id:in-reply-to:references:mime-version:content-type; s= smtpout; bh=U3n4vxrk5frjAQ6wAMlHu7cSt2Y=; b=ebqKkLSAF8rdu5n5Alho IvbaY5YRUBD9r8/GEY9UdTOkdoQZ67/iw9VLNGjQpF5ZwIDYaIMHLMRxdUk/LFqQ PQyfCbO9pX6tyGV3e2Zu1Hz9QvzH9R3pVpLwid3tSwnrsv35cuxiQMMWHO19aUnX bzIC2iDaQa0UvVEEdFxRFeY= X-Sasl-enc: I8U0rKHsQSutnLOTwWTeTuKtruluvZ35HyL70kX9QhsQ 1422876870 Received: from alonso-desktop.sodgeit.de (unknown [46.5.139.208]) by mail.messagingengine.com (Postfix) with ESMTPA id 2630B6800FD; Mon, 2 Feb 2015 06:34:30 -0500 (EST) Date: Mon, 2 Feb 2015 12:34:21 +0100 From: "Schaich, Alonso" To: Peter Ross Subject: Re: Virtualbx and CPU counting Message-Id: <20150202123421.cb100c6611d484847102d9c3@fastmail.fm> In-Reply-To: References: X-Mailer: Sylpheed 3.4.2 (GTK+ 2.24.25; amd64-portbld-freebsd10.1) Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pgp-signature"; micalg="PGP-SHA512"; boundary="Signature=_Mon__2_Feb_2015_12_34_21_+0100_oZ4uzLjBx0S61amR" Cc: freebsd-virtualization@freebsd.org 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: Mon, 02 Feb 2015 11:34:37 -0000 --Signature=_Mon__2_Feb_2015_12_34_21_+0100_oZ4uzLjBx0S61amR Content-Type: text/plain; charset=US-ASCII Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, 2 Feb 2015 22:09:04 +1100 (EST) Peter Ross wrote: > Hi, >=20 > I have a question: >=20 > I have a server with >=20 > - 2 Xeon E5-2609, > - 4 cores each > - 4 threads per core >=20 > On OS level, Linux and FreeBSD see 8 processors. >=20 > VirtualBox offers 16 CPUs as the maximal number for a VM. >=20 > I expected 32. How does this work? >=20 > Regards > Peter Hi, The Xeon E5-2609 has 1 Thread per core, resulting in 4 Threads per Socket and 8 Threads in a dual-socket setup. If it had Hyperthreading (like the 2620 and "greater" models do), then it would have 2 Threads per core, i.e. 16 on a dual setup with 4 cores per socket. Alonso --Signature=_Mon__2_Feb_2015_12_34_21_+0100_oZ4uzLjBx0S61amR Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQF8BAEBCgBmBQJUz2C+XxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRGRUQ1N0JDOERFQjk5NEQ5QjUyQzBBMzVG RjhGNkI2RDBBQUNGQzY3AAoJEP+Pa20KrPxnUMgH/A1sui1wG1tWHhC+fdgno4wJ v8gupASQMIXGy0wAFnaDI/7suCvINRbHPJ5hPqrVqtl6xWbBMJHBs5TwtBLtiEDp Ez+OG+JYQKIQMc+1vqU5jNiA1CCgww9L7tiPjxng0Kfd8lddUlftkqpQ/6Rphi8C wmOMLR+ajy5UDKm2REfyy7hmzuTdjOjaNE8rAhqeLUcoJfs6Go24kGS+nmtVxoJz qW67P9ivj24MzIvWBigfum9ZcW/Lx+A8J+wSDAPx2iW4Wjvg6VLRkY1wZKbzSzMR COP4htrHKZeQEb64ecZLumVtJA3nSOuSjABYh0ZIiHX5LzXsol+qUnpJF86qzfI= =qonq -----END PGP SIGNATURE----- --Signature=_Mon__2_Feb_2015_12_34_21_+0100_oZ4uzLjBx0S61amR--