[Orca-users] Re: Modifying orca graph rebuilds

[Blair Zajac]

Darren Dunham wrote:
> 
> > > 2,7,12,17,22,27,32,37,42,47,52,57 * * * * /usr/local/orca/bin/orca -o /usr/local/orca/lib/orcallator.cfg &
> > > 0,5,10,15,20,25,30,35,40,45,50,55 * * * * /usr/local/orca/bin/orca -o /usr/local/orca/lib/windows.cfg &
> >
> > These are not ideal.  The -o option means to have Orca quit after
> > processing all of the data.  This wastes a lot of CPU time to start up.
> >
> > It's better to keep Orca running continuously instead.
> 
> Okay.  I've got that now....
> 
> Assuming I do that, and run a single process with -r so that the RRD is
> updated continuously, but the PNGs are not, how do I update the PNGs at
> other times?

Unfortunately, Orca is designed so that only one process does all of this.
Multiple processes will also tread over the same state file, which isn't
good, but this may not be a real problem.

> 
> Can I run a separate orca with a -o, or since both processes would
> expect to be able to update the RRDs, would they step on each other?

They would probably step over each other.

I would take patches though that would implement this behavior for multiple
Orcas.

Best,
Blair

-- 
Blair Zajac <blair at orcaware.com>
Web and OS performance plots - http://www.orcaware.com/orca/