On 2012-11-21 07:18, Bernhard Fröhlich wrote:
On Wed, Nov 21, 2012 at 9:24 AM, 진석오 <jsu...@gmail.com> wrote:
Dear,
I installed virtualbox 4.2.4(CFT) on zfs FreeBSD 9.1-RC3
installing and windows guest(windows 8) install with guest addition
was
successful.
but the windows guest is too slow, it is hardly usable.
my hardware specs.
intel i7 quad core 3.6. ghz, with 8 thread
mem 16G
motherboard - asrock z79 extreme 6.
intel SSD 120G.
my virtualbox vdi file is at zroot/bigfile, with
primaryache, secondarycache = NONE, even sync=disabled because of
slow
performance.
virtual machine settings
- mem 4096M, cpu 4ea
- 25g vdi(SATA controller) with SSD ticked
- VT-x/AMD-V, Nested Paging
- video 128M
I tried the VB on UFS because ZFS was too slow, but the result was
the
same..
I downgraded to FreeBSD 9.0 on UFS or / ZFS, but but the result was
the
same..
and I tried virtualbox 4.1.22 on FB 9.0/9.1-RC3,but but the result
was the
same..
but sad story is that
I found that virtualbox 4.2.4 on linux(opensuse 12.2, ext4) was very
fast.
opensuse is installed on the second harddisk(NOT SSD) at the same
computer.
virtualbox zfs/FreeBSD on SSD is much slower than virtualbox
ext4/opensuse
on SATA2 harddisk...
do I have any miss to setup on FreeBSD? I do not want to reboot to
linux
just because of virtualbox....
please let me know what I should do, if you use virtualbox on FreeBSD
without any problem...
thank you in advance...
from jsuk
I would start doing some easy tests to verify what slow really means.
Is it related
to CPU, I/O, network? What does top say on the host? Is the VM
consuming lots
of CPU all the time or generating an unusual high number of
interrupts?
VirtualBox tries to use hardware CPU features for virtualization BUT
it also has
a software emulation fallback (from QEMU I think) but that is
painfully slow so
usually when someone says "vbox is slow" that is a sign of either your
CPU
features weren't detected correctly or your BIOS has a bug and doesn't
announce
them properly. In either case checking that you run the latest BIOS is
a good idea.
If you had a look at that stuff please attach your ~/VirtualBox
VMs/Logs/VBox.log
I wonder if you didn't install or kldload the virtualbox kernel modules
on the FreeBSD host? Can you send the output of kldstat from the host?
Rusty Nejdl
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