Re: How many Ram for cyrus

On 13/06/2018 21:48, Albert Shih wrote:
> Hi eveyone
>
> I got a server (FreeBSD + Cyrusimap, 192Go) I need to reserve some RAM for the ZFS arc.
>
> I would like to know how many Ram I need to run cyrus-imap.
>
> I got on between 300-1600 connexion imap simultaneous (on my old server)
>
> Through ps aux I see each imapd daemon use between 30Mo and.....300Mo. So
> because this very large interval I'm unable to calculate.


Albert,


We have a dual socket Intel (2.8 GHz, 8 cores), 72 GB RAM server running 
Cyrus 2.3 on
Solaris 10.  It is very happy with 50-100 POP service instances and 
5000-8000 IMAPDs
continuously in the system.
I seem to remember ZFS ARC takes all RAM it can get hold of, up to 50% 
of total RAM.

Solaris 'prstat' shows typical size of an IMAPD process to be around 75 
MB with an RSS
of 43 MB.
I recall the mailboxes.db size playing a role here. We have half a 
million mailboxes.


Cordialement,
Eric.



>
> Regards.
> --
> Albert SHIH
> DIO bâtiment 15
> Observatoire de Paris
> 5 Place Jules Janssen
> 92195 Meudon Cedex
> France
> ☏ +33 1 45 07 76 26/+33 6 86 69 95 71
> xmpp: [email protected]
> Heure local/Local time:
> Wed Jun 13 21:30:50 CEST 2018
> ----
> Cyrus Home Page: http://www.cyrusimap.org/
> List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
> To Unsubscribe:
> https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus

----
Cyrus Home Page: http://www.cyrusimap.org/
List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
To Unsubscribe:
https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus