On Wed, 2010-04-07 at 10:56 +0800, JackyC@umac.mo wrote:
Hi Timo,
You do mean all dovecot processes eat 100% CPU, right? And it happens immediately after they start up?
Not all. For example, we have 2 "dovecot-auth -w". Suddenly one of them will eat 100%. After a certain period of time (short/long, not a constant), another will come up. They didn't eat 100% when they start up even.
What about other processes than dovecot-auth -w? When do they start to eat 100% CPU?
10:43:34.728594 write(12, "0\201\376\2\2\30oc\201\367\4'CN=Configuration,DC="..., 257) = 257
At least for dovecot-auth -w it looks like it's doing an LDAP lookup (or connect) in here. Maybe it keeps rapidly reconnecting to it all the time?.. Anything in Dovecot's error logs? http://wiki.dovecot.org/Logging
But you said other processes also eat 100% CPU, and LDAP doesn't explain that.