Re: [gentoo-server] Windows NT4 on KVM+QEMU extremely slow...

[Robert Bridge]

Hi,

Are you sure your hardware virt isn't disabled in the BIOS? It is, in
my experience, the one BIOS setting the linux kernel doesn't/can't
over-ride.

Cheers,
RobbieAB

On 18 April 2013 01:35, Vinícius Ferrão <viniciusferrao@×××××××.br> wrote:
> Hello dudes,
>
> Thanks for the replies.
>
> But I've read somewhere that -no-kvm should be enabled in order to run NT4
> Properly.
>
> Anyway, I removed the flag and nothing really happened. It's still slow.
> It's usable, but slow. VMWare was much faster.
>
> And about the RAM issue. It's Windows NT4. I don't think more is necessary.
> The machine boots consuming only 30MB. And about the slowness of the system
> is during CPU intensive operations.
>
> Anything else to try dudes?
>
> Thanks,
>
> Vinícius Ferrão: Administrador de Sistemas
> www.ferrao.eti.br | [phone]
>
> On Apr 17, 2013, at 5:54 PM, Hinnerk van Bruinehsen
> <h.v.bruinehsen@×××××××××.de>
>  wrote:
>
> On Wed, Apr 17, 2013 at 07:34:00PM +0000, Vinícius Ferrão wrote:
>
> Hello dudes,
>
> I'm running Windows NT 4 Terminal Server on QEMU and the performance is too
> slow; I don't even know how to debug it and I even don't if this is normal
> or not.
>
> On VMWare Player the performance was much better. And this isn't a
> migration. I've reinstalled the NT4 from the ground.
>
> Anyway; i'm launching the VM with this arguments:
> kvm -m 128m -name WinNT4TS -drive file=winnt4ts.raw -cdrom Windows\ NT\ 4\
> Terminal\ Server\ Image/WINNT-TSE40.iso -net
> nic,model=ne2k_pci,macaddr=00:0c:29:74:fa:b4 -net tap -vga std -cpu
> pentium,level=1 -smp 1 -no-acpi -no-hpet -no-kvm -boot c -vnc none
> -daemonize
>
>
> Hi,
>
> iirc the commandline switch --no-kvm disables kvm (so it'S just software
> emulated qemu). You disable hardware virtualization accerleration with
> it.
>
> Other than that: more than 128 MB ram will most likely also help to
> speed things up.
>
> WKR
> Hinnerk
>
>