Date: Wed, 21 Nov 2012 08:32:34 -0600 From: Rusty Nejdl <rnejdl@ringofsaturn.com> To: <freebsd-emulation@freebsd.org> Subject: Re: virtualbox 4.2.4 tooooo slow Message-ID: <assp.1672f35080.d11f96b684522e9ce0e4476eb336d378@ringofsaturn.com> In-Reply-To: <CAE-m3X1xrqaJG-_xQ_0nBR6Y4r9D1JdPWjTjcQckM9Nv%2BjYmXg@mail.gmail.com> References: <CADB0mjv%2BoxqKX-2oB0P7SUJ%2BzBq0HtSduKwhagSp71-vGgn2Kg@mail.gmail.com> <CAE-m3X1xrqaJG-_xQ_0nBR6Y4r9D1JdPWjTjcQckM9Nv%2BjYmXg@mail.gmail.com>
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On 2012-11-21 07:18, Bernhard Fr=C3=B6hlich wrote: > On Wed, Nov 21, 2012 at 9:24 AM, =EC=A7=84=EC=84=9D=EC=98=A4 <jsukoh@gmai= l.com> wrote: >> Dear, >>=20 >> I installed virtualbox 4.2.4(CFT) on zfs FreeBSD 9.1-RC3 >>=20 >> installing and windows guest(windows 8) install with guest addition=20 >> was >> successful. >> but the windows guest is too slow, it is hardly usable. >>=20 >> my hardware specs. >> intel i7 quad core 3.6. ghz, with 8 thread >> mem 16G >> motherboard - asrock z79 extreme 6. >> intel SSD 120G. >>=20 >>=20 >> my virtualbox vdi file is at zroot/bigfile, with >> primaryache, secondarycache =3D NONE, even sync=3Ddisabled because of=20 >> slow >> performance. >>=20 >> virtual machine settings >> - mem 4096M, cpu 4ea >> - 25g vdi(SATA controller) with SSD ticked >> - VT-x/AMD-V, Nested Paging >> - video 128M >>=20 >>=20 >>=20 >> I tried the VB on UFS because ZFS was too slow, but the result was=20 >> the >> same.. >> I downgraded to FreeBSD 9.0 on UFS or / ZFS, but but the result was=20 >> the >> same.. >> and I tried virtualbox 4.1.22 on FB 9.0/9.1-RC3,but but the result=20 >> was the >> same.. >>=20 >> but sad story is that >> I found that virtualbox 4.2.4 on linux(opensuse 12.2, ext4) was very=20 >> fast. >> opensuse is installed on the second harddisk(NOT SSD) at the same=20 >> computer. >>=20 >> virtualbox zfs/FreeBSD on SSD is much slower than virtualbox=20 >> ext4/opensuse >> on SATA2 harddisk... >>=20 >>=20 >> do I have any miss to setup on FreeBSD? I do not want to reboot to=20 >> linux >> just because of virtualbox.... >>=20 >> please let me know what I should do, if you use virtualbox on FreeBSD >> without any problem... >>=20 >> thank you in advance... >>=20 >> from jsuk >=20 > 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=20 > consuming lots > of CPU all the time or generating an unusual high number of=20 > interrupts? >=20 > VirtualBox tries to use hardware CPU features for virtualization BUT=20 > it also has > a software emulation fallback (from QEMU I think) but that is=20 > painfully slow so > usually when someone says "vbox is slow" that is a sign of either your=20 > CPU > features weren't detected correctly or your BIOS has a bug and doesn't=20 > announce > them properly. In either case checking that you run the latest BIOS is > a good idea. >=20 > 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=20 on the FreeBSD host? Can you send the output of kldstat from the host? Rusty Nejdl
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