----- 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-modeyes 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
> 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 9902Which version of dovecot are you running? Aki