From owner-freebsd-emulation@FreeBSD.ORG Wed Jan 23 11:22:08 2013 Return-Path: Delivered-To: freebsd-emulation@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 319FB74B for ; Wed, 23 Jan 2013 11:22:08 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from vps.rulingia.com (host-122-100-2-194.octopus.com.au [122.100.2.194]) by mx1.freebsd.org (Postfix) with ESMTP id C1D64A6C for ; Wed, 23 Jan 2013 11:22:07 +0000 (UTC) Received: from server.rulingia.com (c220-239-246-167.belrs5.nsw.optusnet.com.au [220.239.246.167]) by vps.rulingia.com (8.14.5/8.14.5) with ESMTP id r0NBM58P070532 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 23 Jan 2013 22:22:06 +1100 (EST) (envelope-from peter@rulingia.com) X-Bogosity: Ham, spamicity=0.000000 Received: from server.rulingia.com (localhost.rulingia.com [127.0.0.1]) by server.rulingia.com (8.14.5/8.14.5) with ESMTP id r0NBM0Ok023265 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 23 Jan 2013 22:22:01 +1100 (EST) (envelope-from peter@server.rulingia.com) Received: (from peter@localhost) by server.rulingia.com (8.14.5/8.14.5/Submit) id r0NBM0wL023247; Wed, 23 Jan 2013 22:22:00 +1100 (EST) (envelope-from peter) Date: Wed, 23 Jan 2013 22:22:00 +1100 From: Peter Jeremy To: Martin Simmons Subject: Re: FreeBSD/i386 guests using excessive host CPU Message-ID: <20130123112200.GN30633@server.rulingia.com> References: <20121212014336.GD35245@server.rulingia.com> <201212121915.qBCJFYmg014095@higson.cam.lispworks.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="hl1kWnBARzJiTscN" Content-Disposition: inline In-Reply-To: <201212121915.qBCJFYmg014095@higson.cam.lispworks.com> X-PGP-Key: http://www.rulingia.com/keys/peter.pgp User-Agent: Mutt/1.5.21 (2010-09-15) Cc: freebsd-emulation@freebsd.org X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.14 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: Wed, 23 Jan 2013 11:22:08 -0000 --hl1kWnBARzJiTscN Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable [sorry for the delay] On 2012-Dec-12 19:15:34 +0000, Martin Simmons wrote: >>>>>> On Wed, 12 Dec 2012 12:43:36 +1100, Peter Jeremy said: >> My VPS provider will not offer 32-bit FreeBSD guests because they use >> excessive (ESXi) host CPU time. I have done some experiments using >> VirtualBox on my FreeBSD/amd64 8-stable host and see the same. > >I can't repeat that with idle FreeBSD 8.0 guests running in VirtualBox 4.1= =2E18 >on Linux kernel 2.6.35.14-106.fc14.x86_64. In fact, the 64-bit one uses 4= =2E8% >of the CPU whereas the 32-bit one uses 4.2% (according to ps "bsdtime" >measured over 1000 seconds). I repeated the test and couldn't reproduce my results - I wound up with results more like yours. I'm still trying to work out what would cause the change. --=20 Peter Jeremy --hl1kWnBARzJiTscN Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlD/x9gACgkQ/opHv/APuId8iwCeLW0MfJKGAvZBhdqHQFwvYpwI 934AnRTBjJDBdPBfupp1y2fbwuUdyKWh =sHBp -----END PGP SIGNATURE----- --hl1kWnBARzJiTscN--