Default services enabled

[Clyde E. Kunkel]

On 08/18/2011 06:29 PM, Lennart Poettering wrote:
> On Thu, 18.08.11 12:33, Bill Nottingham (notting at redhat.com) wrote:
>
>>
>> Lennart Poettering (mzerqung at 0pointer.de) said:
>>>> Oh, I just noticed this:
>>>>
>>>> https://fedoraproject.org/wiki/Packaging:Guidelines:Systemd#Socket_activation
>>>> "Since Fedora currently doesn't want any services to do on-demand
>>>> loading, all socket activated services must autostart."
>>>
>>> Uh, oh. I think CUPS is definitely something we should lazily socket
>>> activate instead of run it unconditionally.
>>>
>>> Spot, Bill, what's the reason for this wording in the guidelines? As
>>> CUPS is something we really should start only when needed, why do we
>>> have this wording in the guidelines? Can we relax this?
>>
>> I'm trying to remember. Perhaps it stemmed from the side consequence of
>> needing to know if a particular service had a socket entry, and therefore
>> you needed to disable both to disable a service? (I do recall there being
>> issues with socket-activated NetworkManager for reasons along these
>> lines.)
>
> Well, but disabling and enabling doesn't have to list 1:1 the same
> units. The disabling-on-uninstall should always disable all units we
> installed while the enabling-on-install should only enable the socket
> and path units.
>
>> For something like cups, would this impose a significant delay in things
>> such as the GTK or QT print dialog, if opening that dialog causes the
>> cups daemon to then start?
>
> Unlikely. CUPS is not that slow. I mean, if the dialog takes a second or
> so this would still be completely fine, but in real life CUPS starts
> much faster. On my machine it is very hard to see any difference at all
> if I run "lpq" on a shell when CUPS is started and when it is not. So, I
> don't think this should be any issue at all.
>
> Lennart
>

I have noticed that to install a printer on a new F16 instllation that 
you first have to manually start cups else the system-config-printer 
dialogue refuses to cooperate.

-- 
Regards,
OldFart