Date: Thu, 18 Jul 2013 14:44:37 -0500 From: dweimer <dweimer@dweimer.net> To: freebsd-virtualization@freebsd.org Subject: Multiple CPUs in VirtualBox Guest still limited to one Host CPU core. Message-ID: <3a9b9ee95327316dfe472f8816d2b7f1@dweimer.net>
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I have been running VirtualBox in headless mode for a while on my home
server. Its just running a single VM with Windows 2011 HomeServer
(windows 2008 R2 based) as a file server I never did notice as there is
very little CPU load that even though the guest is configured with 2
CPUs the load is never on more than 1 core of the 6 core AMD processor.
I only noticed this after being happy with performance and stability of
this setup, I migrated my laptop over to FreeBSD with VirtualBox to run
Windows 8 in a VM, (yes I still have to run Windows for some things at
work) however now that I am actually trying to do some interactive work
in the VM I noticed it was a bit sluggish. And this is when I
discovered that the Intel Core i7 QUAD core CPU was cranking away on one
core while the others were sitting idle. I had configured the VM with 4
CPUS to match those of the host, am I missing some setting? Or is
VirtualBox limited to one thread when running on a FreeBSD host.
FreeBSD is running 9.1p4 compiled from source using Clang with
virtualbox-ose-4.2.16_2 installed from ports, with the following options
set.
# This file is auto-generated by 'make config'.
# Options for virtualbox-ose-4.2.16_2
_OPTIONS_READ=virtualbox-ose-4.2.16_2
_FILE_COMPLETE_OPTIONS_LIST=DBUS DEBUG GUESTADDITIONS NLS PULSEAUDIO QT4
UDPTUNNEL VDE VNC WEBSERVICE X11
OPTIONS_FILE_SET+=DBUS
OPTIONS_FILE_UNSET+=DEBUG
OPTIONS_FILE_SET+=GUESTADDITIONS
OPTIONS_FILE_SET+=NLS
OPTIONS_FILE_SET+=PULSEAUDIO
OPTIONS_FILE_SET+=QT4
OPTIONS_FILE_SET+=UDPTUNNEL
OPTIONS_FILE_UNSET+=VDE
OPTIONS_FILE_SET+=VNC
OPTIONS_FILE_UNSET+=WEBSERVICE
OPTIONS_FILE_SET+=X11
--
Thanks,
Dean E. Weimer
http://www.dweimer.net/
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