cyrus imap hangs regularly

[Rob Siemborski]

On Tue, 12 Aug 2003, Ilan Rabinovitch wrote:

> Lately I'm finding that the various cyrus processes go to "sleep" and never
> wake up.  As a result sendmail is unable to deliver its mail to cyrus.  This
> has happened 3 times in the last 48 hours.   When this happens users can connect to pop but not
> IMAP, but again no new mail gets delivered from the MTA.

This can happen if processes that are otherwise doing nothing get killed
unexpectedly, either by an administrative action or by a low memory
condition or similar.

> If I restart Cyrus it now takes over an hour to fully start.  It spends this
> time: converting db files, ctl_cyrusdb -r, and ctl_deliver -r.  While these
> are running users cannot connect to imap or pop.  The cyrus processes use
> 97% CPU on a pretty beefy machine for their entire duration.  When it completes they can
> connect to both just fine and I can force sendmail to deliver all the mail
> no problem.  However, this problem repeats just a few hours late.

Please read:

http://asg.web.cmu.edu/twiki/bin/view/Cyrus/WhyBerkeleyRecoverySoLong

-Rob

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Rob Siemborski * Andrew Systems Group * Cyert Hall 207 * 412-268-7456
Research Systems Programmer * /usr/contributed Gatekeeper