Re: Request for feedback and/or participation on https://fedoraproject.org/wiki/Features/PowerManagement

[Colin Walters <walters verbum org>]

On Wed, Feb 4, 2009 at 11:37 AM, Olivier Galibert <galibert pobox com> wrote:
> On Wed, Feb 04, 2009 at 01:42:42PM +0000, Richard Hughes wrote:
>> Well, sending the data does cause a wakeup, yes. The interface stops
>> polling if there's no client connected.
>
> If I understood correctly, the problem was more about the "wideness"
> of the wakeup, i.e. everything connected to the bus was waking up,
> unswapping, etc rather than just what was interested by the message.

Almost certainly what you're thinking of (or have heard about) is the
NameOwnerChanged problem:
http://bugs.freedesktop.org/show_bug.cgi?id=14183

It's definitely something we should fix (and the system was designed
to support avoid wakeups), but it's certainly not as bad as every
process waking up on every message; just when something joins or
leaves the bus.