[LAU] Re: NOHZ (was [vbox-users] openSUSE 10.3?)

[David Baron]

On Thursday 20 September 2007, Frank Mehnert wrote:
> On Thursday 20 September 2007, Alexey Eremenko wrote:
> > On 9/20/07, Pablo Sanchez <pablo at blueoakdb.com> wrote:
> > > > > If so, try booting your host kernel with the nohz=off option.
> > > >
> > > > I'll try the above.
> > >
> > > Just to follow up, passing the above kernel parameter solved the
> > > problem.  I read up a bit on CONFIG_NO_HZ=y and this is a good thing
> > > to save power.  If I get a chance, I may try the latest svn snap ..
> >
> > It's not just about power -- NOHZ (also called tickless kernels) can
> > make Virtualization faster. All types of Virtualization - because
> > there will be less overhead.
> >
> > But this all is just in theory.
>
> Indeed, using a tickless Linux kernel as _guest_ induces less overhead
> since there are less world switches between the host and the guest.
>
> But I'm talking about nohz=off for the _host_ Linux kernel!

Sorry for the cross-posting but it is appropriate here.

... Or compile the kernel appropriately.

Question is: How does ticklessness effect audio? Realtime-preemptive kernels? 
Other multimedia?