severe fork() problems with new dovecot server

[Noel Butler]

On 02/03/2016 05:11, J. Niklas wrote:
> On 01.03.2016 18:21, Dolf Schimmel wrote:
> 
>> Recently I played around a little with cgroups where you can limit the 
>> max number of processes per cgroup.
>> Could it be that, perhaps, you've stumbled upon such a limit?
>> Systemd does contain all services by default  in their own cgroup 
>> afaik,
>> so it could be that you're using it unknowingly.
> 
> Yes, yes, \o/ ;-)
> 
> #> systemctl status dovecot.service
> * dovecot.service - Dovecot IMAP/POP3 email server
>    Loaded: loaded (/lib/systemd/system/dovecot.service; enabled; vendor
> preset: enabled)
>   Drop-In: /etc/systemd/system/dovecot.service.d
>            `-ulimits.conf
>    Active: active (running) since Tue 2016-03-01 15:28:29; 4h 24min ago
>  Main PID: 10098 (dovecot)
>     Tasks: 204 (limit: 512)
>    CGroup: /system.slice/dovecot.service
> 
> There ist my "512". The way of systemd, ignoring all the config stuff
> that has been there for decades while inposing its own, complex and 
> very
> sparsely documented ruleset on top is beginning to seriously annoy me.
> At least I would have expected some sort of syslog message.
> 
> Just for the records, this can be changed by adding e.g.
> TasksMax=4096
> to the /etc/systemd/system/dovecot.service.d/ulimits.conf I cited
> in my OP.
> 
> Now I'll have to wait and see how things will evolve tomorrow.
> Thank you so much for the great hint!


even more proof that systemd is evil

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