Re: [Dovecot] Dovecot master process

[Timo Sirainen]

On Nov 12, 2008, at 12:34 AM, Steven F Siirila wrote:

We are running into a situation where Dovecot master is simply trying
to do too much.  It some situations, we are finding that there are
times in which it cannot service requests.  Restarting Dovecot seems

has to manage its THOUSANDS of file descriptors for pipes to the many
imap/proxy processes that it uses for logging.  Is there a way to turn

separate threads (which would help on some modern hardware)?  Finally,

to help in these situations, possibly due to the fact that it no longer off logging through the master process (in exchange for lesser security)? If not, would it be easy to have the master process do its logging using would it be easy to delegate the task of logging to a dedicated process?

1) Unsets LOG_TO_MASTER environment
2) Sets USE_SYSLOG environment

4) Executes the imap/pop3 binary.

I was planning on using separate logger processes with v2.0. For now I guess you could make imap/pop3 processes log directly by changing mail_executable to a script that: 3) Closes file descriptor 2 (stderr). I'm not actually sure if you can do this using a shell script, might need to use something else. http://wiki.dovecot.org/PostLoginScripting tells a bit more about using mail_executable.

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