Re: [kvm-devel] Some FAQ questions

[Luca T. <kro...@gm...>]

On Tue, Apr 22, 2008 at 1:10 PM, Avi Kivity <av...@qu...> wrote:
> Damjan wrote:
>  > I have some questions for the FAQ, about the configuration of Linux guests:
>  >  a) is swap needed in the guest (I'd say no, but..)
>  >  b) what filesystem is best for a guest
>  >  c) what io scheduler in the guest (noop? or cfq)
>  >  d) are there any runtime kernel tweaks for the guest (/proc/sys)?
>
>  For the first four questions, do whatever you'd do for a similarly
>  configured host running a similar workload.  It's fine to use cfq as the
>  I/O scheduler.

Is cfq still fair in the guest? The VM re-dispatches the requests (at
least when using QEMU IDE) and the host can reschedule them at will.

Luca