virtualbox 4.2.4 tooooo slow

[진석오]

I found weird thing.
if I run 2 virtualbox such as 2 windows 7 or 1 windows 7/ 1 windows 8 at
the same time,
then both VMs get faster, I am running 1 win7 32bit and 1 win8 64 bit..
then both got faster, both are reasonably good to use/run a program..

1 VM is much slower than 2 simultaneous VMs !!


2012/11/21 진석오 <jsukoh at gmail.com>

> 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
>
>
>