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> 1500 IMAP sessions will eat up about 3GB alone. Are you saying that Dovecot needs 2MB of physical memory per IMAP session? If I want to support a max 100,000 IMAP sessions per server, I should configure the server to have at least 200GBs of SWAP? > On Feb 10, 2017, at 3:58 AM, Christian Balzer <chibi at gol.com> wrote: > > On Fri, 10 Feb 2017 01:13:20 +0530 Rajesh M wrote: > >> hello >> >> could somebody with experience let me know the dovecot config file settings to handle around 1500 simult...

...1 0:01.15 imap > --- > > But yes, as somebody who has mailbox servers with 55k+ session the average > is around 1.6MB. > >> If I want to support a max 100,000 IMAP sessions per server, I should configure the server to have at least 200GBs of SWAP? >> > You will want: > 2. Understanding how to tune Dovecot and more importantly the overall > system to such a task (see that PID up there?). > 3. Be willing to deal with stuff like top and ps taking ages to start/run > and others like atop actually killing dovecot (...

...0 97600 67m 54m S 0 0.1 0:01.15 imap --- But yes, as somebody who has mailbox servers with 55k+ session the average is around 1.6MB. > If I want to support a max 100,000 IMAP sessions per server, I should configure the server to have at least 200GBs of SWAP? > You will want: 1. 256GB of real RAM, swap is for chums. 2. Understanding how to tune Dovecot and more importantly the overall system to such a task (see that PID up there?). 3. Be willing to deal with stuff like top and ps taking ages to start/run and others like atop actually killing...

...>>> --- >>> >>> But yes, as somebody who has mailbox servers with 55k+ session the average >>> is around 1.6MB. >>> >>>> If I want to support a max 100,000 IMAP sessions per server, I should configure the server to have at least 200GBs of SWAP? >>>> >>> You will want: >> >>> 2. Understanding how to tune Dovecot and more importantly the overall >>> system to such a task (see that PID up there?). >>> 3. Be willing to deal with stuff like top and ps taking ages to start/run &...

...> > --- > > > > But yes, as somebody who has mailbox servers with 55k+ session the average > > is around 1.6MB. > > > >> If I want to support a max 100,000 IMAP sessions per server, I should configure the server to have at least 200GBs of SWAP? > >> > > You will want: > > > 2. Understanding how to tune Dovecot and more importantly the overall > > system to such a task (see that PID up there?). > > 3. Be willing to deal with stuff like top and ps taking ages to start/run > > and othe...

...> >>> > >>> But yes, as somebody who has mailbox servers with 55k+ session the average > >>> is around 1.6MB. > >>> > >>>> If I want to support a max 100,000 IMAP sessions per server, I should configure the server to have at least 200GBs of SWAP? > >>>> > >>> You will want: > >> > >>> 2. Understanding how to tune Dovecot and more importantly the overall > >>> system to such a task (see that PID up there?). > >>> 3. Be willing to deal with stuff like t...

...t; > >>> But yes, as somebody who has mailbox servers with 55k+ session the average > > >>> is around 1.6MB. > > >>> > > >>>> If I want to support a max 100,000 IMAP sessions per server, I should configure the server to have at least 200GBs of SWAP? > > >>>> > > >>> You will want: > > >> > > >>> 2. Understanding how to tune Dovecot and more importantly the overall > > >>> system to such a task (see that PID up there?). > > >>> 3....

hello could somebody with experience let me know the dovecot config file settings to handle around 1500 simultaneous connections over pop3 and 1500 connection over imap simultaneously. my server server configuration hex core processor, 16 gb ram 1 X 600 gb 15 k rpm for main drive and 2 X 2000 gb hdd for data (No raid) thanks rajesh my current config file settings as such # 2.2.7: