Re: Application launching and pasteboard slow down

[Richard Frith-Macdonald]

On Monday, April 15, 2002, at 06:43 PM, Chris B. Vetter wrote:

> On Mon, 15 Apr 2002 14:29:28 +0100
> Richard Frith-Macdonald <richard@brainstorm.co.uk> wrote:
> > On Monday, April 15, 2002, at 02:05 PM, Stefan Urbanek wrote:
> > > Application launching seems to be slowed down (very much). Also when
> > > using pasteboard in application for first time, there is long delay
> > > (about 10secs) after operation will begin. It is very noticable with
> > > dragging. I am running a XDM session to another host. I think, this 
> > > has
> > > to do somethink with contacting gdnc and gpbs, but I am not sure. Here
> > > is backtrace of interrupted application while waiting after launching:
> > If you have forgotten to start gpbs and gdnc, the system will try to
> > start them for you automatically, print a warning message to stderr,
> > and wait several seconds for them to start up.
>
> Is there any documentation on HOW to actually launch gdnc and gpbs?

No more than any other app/tool.  The only difference from other tools
is that for these two, -NSHost specifies the machine on whose behalf
the tool is to run, rather than the machine on which the tool should
display.

> If you log in and neither gdnc nor gpbs run, you will get a message,
> that they are not running, and that the preferred way to launch them
> would be during startup.
>
> If they ARE launched during startup, each user logging in will get a
> message, that they cannot be contacted, and new instances (one for
> each user) is started.

Not on any system I've ever seen!  You only have one copy of each on a
machine (except where you are running them on behalf of another machine).

> If they are launched during log-in (eg. via ~/.xinitrc), again each
> user will have their own instances.

No ... only one per system.  If you launch one when another is already
running, you will get an exception reported.

> I'm not sure whether each user really needs his own "copy" of gdnc and
> gpbs running... but it would make sense.

Not only do they not need their own copies, they can't have them,
unless something is seriously wrong with your system.

> However - if a user logs off, gdnc and gpbs will keep running ... but if
> he later logs back in, gdnc and gpbs again can NOT be contacted and
> ANOTHER instance for both will be started (regardless of how they got
> launched in the first place).

No ... contacting these apps has nothing to do with users - they are
reached via network ports (and therefore available to all users).
If you are experiencing this sort of thing, it sounds like you have
a badly broken system.  I guess some sort of incorrectly configured
network or firewalling might conceivably cause this.