On Fri, Jun 19, 2015 at 01:32:11PM -0700, E.B. wrote:
> Can anyone provide reference to another thread on the list
> or any studies where people give some rough numbers? I'd like
> to figure out for our hardware where our limit might be, even
> in a very very general sense. I dont know if I'm going into
> danger zone with 3 instances, 10 instances or not until 50.....?
> Who has written about this?
3 instances is nothing, 10 is likely fine, depending on the smtpd(8)
and smtp(8) process limits limits for each one. As for 50, that
seems a bit ambitious. If the machine can host 50 VMs running
Postfix it can handle at least that many instances on a single O/S.
> > Submission is different, here MUAs may well use SNI, but Postfix
> > does not support that on the server side at this time. Multiple
> > submission services in master.cf work fine, and are probably
> > simpler to manage than full-blown multiple instances.
>
> I comfortible managing instances I like the work you've done
> and its great! But I take your point, it still might be more
> trouble than it's worth. So I lean to this for our solution
> yet I am still interested to learn at what point does spooling
> up more instances become overkill too much potential contention
> for a given set of hardware.
You might just need to trailblaze and do the measurements yourself.
--
Viktor.
