[Qemu-devel] Re: [PATCH 10/12] kvm: enable smp > 1

[Avi Kivity]

On 05/19/2010 12:57 PM, Udo Lembke wrote:
> Jan Kiszka schrieb:
> > ...
> > --enable-io-thread?
> >
> > If you had it disabled, it would also answer my question if -smp works
> > without problems without that feature.
> >
> > Jan
> Hi,
> i have a dumb question: what is the "--enable-io-thread"? Is this a 
> kvm-switch?

It's a ./configure switch for upstream qemu (don't use with qemu-kvm yet).

> My kvm 0.12.4 don't accept this switch. I'm know only "threads=n" as 
> smp-parameter and "aio=threads" as drive-parameter.
>
> Because i look for a solution for a better io-performance of 
> windows-guest with more than one cpu...

Unrelated, what are your smp issues?

--
Do not meddle in the internals of kernels, for they are subtle and quick to 
panic.