Qemu vs VMWare
Tony Nelson
tonynelson at georgeanelson.com
Tue Oct 27 00:17:59 UTC 2009
On 09-10-26 08:12:45, Marko Vojinovic wrote:
> On Monday 26 October 2009 04:15:34 Tony Nelson wrote:
> > The way recommended by QEMU developers is to use KVM, purchasing
> > new hardware that supports KVM if necessary, in which case you
> > won't need to use much of QEMU.
...
> > Good performance on other hardware requires the
> > kernel module kqemu. The QEMU developers have deprecated kqemu and
> > are removing it from the next version (.12 IIRC), but you can
> > currently still use kqemu if you build QEMU with kqemu enabled.
...
> Ok, so I did a yum search and a yum install kqemu, which pulled in
> appropriate kmod packages and all. Then I started the qemu guest to
> see what happens. But the module did not get loaded (lsmod doesn't
> report it). I shutdown the guest, loaded the module manually via
> modprobe (which worked), checked that it is loaded, started the guest
> again, and went to see if there is any performance difference. But
> there wasn't.
>
> So I wonder how to use the kqemu module? Or rather, how to explain to
> qemu that there is a module loaded and that it should use it? There
> is nothing obvious in the GUI about this, where do I set it up?
As I said, you need to build QEMU with kqemu support.
> If default Fedora rpm version of qemu is *not* built with kqemu
> enabled, then that is very unfotunate, since I don't want to
> recompile the whole qemu in order to avoid recompiling vmware
> modules. That would defeat the whole point f using it in the first
> place.
Support for kqemu was removed from QEMU when KVM support was added, and
kqemu itself will be removed soon. You should use some other product,
either VirtualBox or VMWare.
> So can you tell me how to get the kqemu module to work?
...
Rebuild QEMU with the patches in
<https://bugzilla.redhat.com/show_bug.cgi?id=520284>, using a version
of QEMU that still has kqemu in it (version < .12, I think).
--
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' <http://www.georgeanelson.com/>
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