Re: Composition [was Re: gnome-session proposal]

["Patryk Zawadzki" <patrys pld-linux org>]

On Fri, Jun 27, 2008 at 12:51 AM, Iain * <iaingnome gmail com> wrote:
> On Thu, Jun 26, 2008 at 11:34 PM, Patryk Zawadzki <patrys pld-linux org> wrote:
>
>> Exactly - that's the most common scenario - app X is bound to IO and
>> it won't receive redraw requests until another app stops trashing the
>> disk.
> I'd suggest that thats a broken application that should be fixed,
> rather than insisting that a compositor is used to work around the
> issue.
> iain

Well even if you try to read just a 10k file you can get stuck if
another application is causing excessive IO (and I tend to run such
applications). It's hard to delegate each disk operation to a separate
thread just in case the computer is busy with something else.

Another case is applications with custom canvases like web browsers
where repainting a region might be slightly delayed as it's a resource
intensive process. Try moving a window over them and you'll get a
trail of "shadows."

-- 
Patryk Zawadzki
PLD Linux Distribution