Displaying 5 results from an estimated 5 matches for "joshdata".
2017 Feb 12
1
dovecot config for 1500 simultaneous connection
...20% of the IMAP sessions
> here will be hibernated at any given time I'd be pleasantly surprised.
>
> Because between:
>
> 1. Finding a sensible imap_hibernate_timeout.
>
> 2. Having well behaved clients that keep idling instead of restarting the
> sequence (https://joshdata.wordpress.com/2014/08/09/how-bad-is-imap-idle/ <https://joshdata.wordpress.com/2014/08/09/how-bad-is-imap-idle/>)
>
> 3. Having lots of mobile clients who either get disconnected (invisible to
> Dovecot) or have aggressive IDLE timers to overcome carrier NAT timeouts
> (a large m...
2017 Feb 13
1
dovecot config for 1500 simultaneous connection
...will be hibernated at any given time I'd be pleasantly surprised.
> >
> > Because between:
> >
> > 1. Finding a sensible imap_hibernate_timeout.
> >
> > 2. Having well behaved clients that keep idling instead of restarting the
> > sequence (https://joshdata.wordpress.com/2014/08/09/how-bad-is-imap-idle/ <https://joshdata.wordpress.com/2014/08/09/how-bad-is-imap-idle/>)
> >
> > 3. Having lots of mobile clients who either get disconnected (invisible to
> > Dovecot) or have aggressive IDLE timers to overcome carrier NAT timeouts...
2017 Feb 10
2
dovecot config for 1500 simultaneous connection
> 1. 256GB of real RAM, swap is for chums.
Are you sure that 100,000 IMAP sessions wouldn?t work well with SWAP, especially with fast SSD storage (which is a lot cheaper than RAM)?
Seems that these IMAP processes are long lived processes (idling most of the time) that don?t need that much of the contents of real memory available for much of the life of the process. I use a database proxy in
2017 Feb 15
1
dovecot config for 1500 simultaneous connection
...e I'd be pleasantly surprised.
> > >
> > > Because between:
> > >
> > > 1. Finding a sensible imap_hibernate_timeout.
> > >
> > > 2. Having well behaved clients that keep idling instead of restarting the
> > > sequence (https://joshdata.wordpress.com/2014/08/09/how-bad-is-imap-idle/ <https://joshdata.wordpress.com/2014/08/09/how-bad-is-imap-idle/>)
> > >
> > > 3. Having lots of mobile clients who either get disconnected (invisible to
> > > Dovecot) or have aggressive IDLE timers to overcome carrie...
2017 Feb 12
0
dovecot config for 1500 simultaneous connection
...not expecting miracles and if more than 20% of the IMAP sessions
here will be hibernated at any given time I'd be pleasantly surprised.
Because between:
1. Finding a sensible imap_hibernate_timeout.
2. Having well behaved clients that keep idling instead of restarting the
sequence (https://joshdata.wordpress.com/2014/08/09/how-bad-is-imap-idle/)
3. Having lots of mobile clients who either get disconnected (invisible to
Dovecot) or have aggressive IDLE timers to overcome carrier NAT timeouts
(a large mobile carrier here times out idle TCP sessions after 2 minutes,
forcing people to use 1 minu...