100 MB RAM per clinet in an imap-proxy setup ...

[Aki Tuomi]

> On 03/09/2021 10:25 Tobias Oetiker <tobi at oetiker.ch> wrote:
> 
>  
> ----- On Sep 3, 2021, at 9:01 AM, Aki Tuomi aki.tuomi at open-xchange.com wrote:
> 
> >> On 03/09/2021 09:35 Tobias Oetiker <tobi at oetiker.ch> wrote:
> >> 
> >> 
> >> Hi All,
> >> 
> >> I spent some quality time yesterday, tuning dovecot on a server which serves as
> >> an imap-proxy in front of a zimbra setup
> >> the imap proxy does ldap client-cert authentication and works well.
> >> 
> >> BUT
> >> 
> >> I found that the imap-login processes seem to gain 100 MB per connection they
> >> are accepting ... this seems pretty hefty.
> [...]
> > 
> > I would strongly recommend using "high performance" configuration on your proxy.
> > 
> > See https://doc.dovecot.org/admin_manual/login_processes/#high-performance-mode
> 
> yes that is what we have:
> 
>  service imap-login {
>   service_count = 0
>   client_limit = 380
>   process_limit = 10
>   vsz_limit = 39G
>  }
> 
> the machine has 180 GB ram
> 
> cheers
> tobi
> 
> -- 
> Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
> www.oetiker.ch tobi at oetiker.ch +41 62 775 9902

Which version of dovecot are you running?

Aki