Re: no systemd in containers: Requires -> Recommends

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On Thu, Dec 17, 2015 at 10:04:48PM +0100, Reindl Harald wrote:
> 
> 
> Am 17.12.2015 um 22:00 schrieb Neil Horman:
> >On Thu, Dec 17, 2015 at 03:39:17PM -0500, Colin Walters wrote:
> >>What you're arguing is that *build* convenience for our current architecture
> >>outweighs the *runtime* cost.  That doesn't make sense long term - they're
> >>different problems.
> >What runtime cost are you referring to here?  The cost of running systemd in a
> >container?  Its miniscule, given that its only job is to start a handful of
> >units and get out of the way
> 
> that's not true
> 
> on virtual machines with no load all day long PID1 is often found as number
> 1 in htop sorted by CPU usage - multiply that with 500 and you have a
> *useless* and well noticeable load on the host
> 
What I hear you saying is that on a system that has nothing better to do, the
primary monitoring process wakes up periodically to check on various system
aspects (cron jobs, journal rotates, etc).  That sounds like working as designed
to me, not a reason to throw the proverbial baby out with the bath water.  That
seems like a reason to do some tuning.

Neil




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