Re: [PATCH v3] ui/cocoa: Take refresh rate into account

[Peter Maydell]

On Fri, 1 Jul 2022 at 11:11, Gerd Hoffmann <kraxel@redhat.com> wrote:
>
> On Tue, Jun 21, 2022 at 09:51:38AM +0100, Peter Maydell wrote:
> > On Mon, 20 Jun 2022 at 21:29, Akihiko Odaki <akihiko.odaki@gmail.com> wrote:
> > >
> > > Retreieve the refresh rate of the display and reflect it with
> > > dpy_set_ui_info() and update_displaychangelistener(), allowing the
> > > guest and DisplayChangeListener to consume the information.
> >
> > But why? What goes wrong if we don't bother to do this?
>
> Nothing goes wrong.  This provides a hint to the guest how often the
> display is updated, so the guest has the chance to adapt to that.
> When we run 30 Hz display updates on the host side it is pointless for
> the guest to update the screen at 60Hz frequency, the guest can spare
> some cpu cycles instead.
>
> [ this should be better explained in the commit message ]

Thanks for the explanation.

-- PMM