[dovecot] Re: Failure in the presence of too many connections
Timo Sirainen
tss at iki.fi
Wed Mar 26 20:45:03 EET 2003
On Wed, 2003-03-26 at 20:28, Mark E. Mallett wrote:
> Had an event today where dovecot refused new connections and would not
> accept more until restarted, whereupon it worked for a few minutes and
> locked up again. Looking at the logs it appeared that it had run out
> of file descriptors. I increased the open files limit and started it
> again-- which worked but it only pushes off the problem.
Which process ran out of fds? "dovecot"?
> Does dovecot keep an open file descriptor for every imap or pop3
> child?
No, except imap-login <-> imap does keep one open for SSL connections.
> If so, this would argue more towards a tcpserver sort of
> control. If not, perhaps something is leaking..
I haven't noticed any leaks. stracing dovecot process kept the fds
pretty much the same.
> PS: assume you saw recent RFCs 3501 and 3502 ?
Yes, I've read both as drafts.
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