Jack Stewart wrote:
Zhang Huangbin wrote:
Daniel L. Miller wrote:
Zhang Huangbin wrote:
Hi, all.
I just upgrade from 1.0.15 to 1.1.1 in a test box(RHEL 5.2, x86_64).
after upgrade, i got this warning msg:
----8< ----
# /etc/init.d/dovecot restart
Stopping Dovecot Imap: [ OK ]
Starting Dovecot Imap: Warning: fd limit 1024 is lower than what
Dovecot can use under full load (more than 1280). Either grow the
limit or change login_max_processes_count and max_mail_processes
settings
I'm just guessing - but reading that warning it appears to me that
Dovecot is saying that as it is configured, it can consume more O/S
resources (I assume fd is "file descriptors") than the O/S is
currently configured for. So you need to DECREASE your dovecot max
processes to decrease the (potential) system demands - or increase
your O/S settings.
Daniel
I think so.
I just decrease the processes, it works now.
Hi,
Just as an FYI, for some versions of linux (i.e. RHE) you need to set
the process limit - ulimit unlimited is not enough. 1024 is the
default number of open file descriptors.
One of the ways to solve this is by running 'ulimit -n X' in your init
script before starting the program. Within RHE, another way is to
configure /etc/security/limits.conf by putting something like this
into the file:
* hard locks 8192
* hard nofile 8192
* soft locks 4096
* soft nofile 4096
This allows for processes to run with 4096 file descriptors by default
and the user process can increase it to 8192 via ulimit.
/etc/security/limits.conf can also be configured on a per user basis
which is also nice.
Thanks Jack. I will test it later. ^_^
I just comment the 'max_processes' variable in dovecot.conf now.
--
Best Regards.
Zhang Huangbin
- iRedMail: Mail Server Solution for Red Hat(R) Enterprise Linux & CentOS 5.x:
http://iRedMail.googlecode.com/
