Il 20/12/2011 06:32, Timo Sirainen ha scritto:
On 16.12.2011, at 14.06, Alessio Cecchi wrote:
I'm working for tuning a busy cluster of dovecot servers. Heach server as 4
core, 8GB of RAM and provide POP3 and IMAP access to mailbox. OS is Debian 6.0
and dovecot version is 1.2.15.
I am unsure how to set "login_max_processes_count" and "login_max_connections"
for reach the best situation when login_process_per_connection is set to no.
They need to be high enough to handle all the concurrent login / SSL
connections.
I don't know what value to set login_max_processes_count.
This doesn't matter so much as login_processes_count. In normal operation the
login_processes_count should be around 1-2x of the number of CPU cores. There's
no reason to create more processes, so the login_max_process_count might as
well be the same as login_processes_count. The login_max_connections then just
needs to be high enough.
Thanks Timo,
I had read on wiki the ratio from core and login_processes_count, but I
did not understand the ratio from login_processes_count and
login_max_processes_count.
So, if I have 4 core and want to serve up to 1024 users, an example of
configuration can be:
login_processes_count = 4
login_max_processes_count = 8
login_max_connections = 128
Right?
--
Alessio Cecchi is:
@ ILS -> http://www.linux.it/~alessice/
on LinkedIn -> http://www.linkedin.com/in/alessice
Assistenza Sistemi GNU/Linux -> http://www.cecchi.biz/
@ PLUG -> ex-Presidente, adesso senatore a vita, http://www.prato.linux.it
@ LOLUG -> Socio http://www.lolug.net
