On Fri, Nov 16, 2007 at 12:36:49PM +0100, Sebastian Hagedorn wrote:He suggested that the trace is unreliable. Perhaps a bug in RHEL 3's version of OpenSSL messes up the stack. That would also explain why nobody else seems to have this problem.FYI I also know a system that has problems with hung Cyrus processes. AFAIR they have problems with pop3s only, but that may be because there are more POP3 than IMAP users, I don't know. The system in question runs 2.3.8 on Debian Etch currently.
That's a 2.6 kernel, right?
I intend to help diagnose that system but had no time so far; they're now running a script that does a POP3 connection every couple of minutes and if that takes too long it restarts Cyrus.
Hm, we don't suffer any actual slowdown, it's just that the number of processes increases over time.
There is nothing interesting in the logs: Oct 15 02:39:31 host cyrus/master[6102]: about to exec /usr/local/cyrus/sbin/pop3d Oct 15 02:39:31 host cyrus/pop3s[6102]: executed Oct 15 02:39:31 host cyrus/pop3s[6102]: accepted connection
That's what I'm seeing. Could you get a stack trace?
OTOH there are a lot of messages like the following: Oct 16 14:13:10 host cyrus/master[26136]: about to exec /usr/local/cyrus/sbin/pop3d Oct 16 14:13:10 host cyrus/pop3s[26136]: executed Oct 16 14:13:10 host cyrus/pop3s[26136]: accepted connection Oct 16 14:13:10 host cyrus/pop3s[26136]: pop3s failed:XXXXXXXXXXXX [XX.XXX.XX.XXX] Oct 16 14:13:10 host cyrus/pop3s[26136]: Fatal error: tls_start_servertls() failed Oct 16 14:13:10 host cyrus/master[15923]: process 26136 exited, status 75 Oct 16 14:13:10 host cyrus/master[15923]: service pop3s pid 26136 in BUSY state: terminated abnormally Any idea what's causing that?
I have many of those as well. I suppose that could be any number of things. Faulty protocol or dropped connections.
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