Courier-imap - Many processes - Unusual

[fearz]

Hi,

Recently we had a Kernel upgrade on main node, since then, i have multiple processes run by courier-imap which isn't as normal as it was, i am sure,

i am also watching logs, there isn't anything unusual, like multiple users checking pop/imap at the same time or flooding or anything, its just not the same as it was before the upgrade, not sure if the upgrade was what caused the problem, here are the processes that run whenever i restart it:

root 18394 0.0 0.1 5848 824 ? S Oct26 0:00 /usr/lib/courier-imap/couriertcpd -address=0 -stderrlogger=/usr/sbi
root 18396 0.0 0.1 4692 1080 ? S Oct26 0:00 /usr/sbin/courierlogger imapd
root 18404 0.0 0.1 5848 828 ? S Oct26 0:00 /usr/lib/courier-imap/couriertcpd -address=0 -stderrlogger=/usr/sbi
root 18406 0.0 0.1 4692 1080 ? S Oct26 0:00 /usr/sbin/courierlogger imapd-ssl
root 18412 0.0 0.1 5848 828 ? S Oct26 0:08 /usr/lib/courier-imap/couriertcpd -address=0 -stderrlogger=/usr/sbi
root 18414 0.0 0.1 4692 1076 ? S Oct26 0:09 /usr/sbin/courierlogger pop3d
root 18421 0.0 0.1 5848 828 ? S Oct26 0:01 /usr/lib/courier-imap/couriertcpd -address=0 -stderrlogger=/usr/sbi
root 18423 0.0 0.1 4692 1080 ? S Oct26 0:01 /usr/sbin/courierlogger pop3d-ssl
popuser 19560 0.0 0.2 7072 1512 ? S Oct26 0:11 /usr/bin/imapd Maildir
root 19569 0.0 0.2 4860 1828 ? S Oct26 0:00 /usr/bin/couriertls -server -tcpd /usr/sbin/imaplogin /usr/lib/cour
popuser 19570 0.0 0.2 7072 1484 ? S Oct26 0:01 /usr/bin/imapd Maildir
root 19589 0.0 0.2 4860 1828 ? S Oct26 0:00 /usr/bin/couriertls -server -tcpd /usr/sbin/imaplogin /usr/lib/cour
popuser 19596 0.0 0.2 7072 1516 ? S Oct26 0:12 /usr/bin/imapd Maildir
root 19602 0.0 0.2 4860 1836 ? S Oct26 0:00 /usr/bin/couriertls -server -tcpd /usr/sbin/imaplogin /usr/lib/cour
popuser 19605 0.0 0.2 7072 1468 ? S Oct26 0:00 /usr/bin/imapd Maildir
root 19639 0.0 0.2 4860 1832 ? S Oct26 0:00 /usr/bin/couriertls -server -tcpd /usr/sbin/imaplogin /usr/lib/cour
popuser 19640 0.0 0.2 7072 1480 ? S Oct26 0:01 /usr/bin/imapd Maildir
popuser 19757 0.0 0.2 7072 1512 ? S 09:06 0:02 /usr/bin/imapd Maildir
root 19759 0.0 0.2 4728 1756 ? S 09:06 0:00 couriertls -localfd=4 -tcpd -server
popuser 19817 0.0 0.2 7072 1500 ? S 09:06 0:01 /usr/bin/imapd Maildir
root 19819 0.0 0.2 4728 1748 ? S 09:06 0:00 couriertls -localfd=4 -tcpd -server
root 11793 0.0 0.1 5708 1100 ? S 20:45 0:00 /usr/sbin/pop3login /usr/lib/courier-imap/authlib/authpsa /usr/bin/
root 11794 0.0 0.1 5708 1100 ? S 20:45 0:00 /usr/sbin/pop3login /usr/lib/courier-imap/authlib/authpsa /usr/bin/
root 11798 0.3 0.3 5124 2164 ? S 20:45 0:00 couriertls -localfd=4 -tcpd -server
root 11807 0.3 0.3 5124 2164 ? S 20:45 0:00 couriertls -localfd=4 -tcpd -server
root 3419 0.0 0.2 4728 1740 ? S Oct26 0:00 /usr/bin/couriertls -server -tcpd /usr/sbin/imaplogin /usr/lib/cour
root 3420 0.0 0.2 4728 1736 ? S Oct26 0:00 /usr/bin/couriertls -server -tcpd /usr/sbin/imaplogin /usr/lib/cour

Appreciating your support please,

Thanks

 

[IgorG]

What is Plesk version do you have? According to http://download1.parallels.com/Plesk/PPP9/rn/en-US/plesk-9.5.2-for-rpm-based-os.html#22

[-] High CPU load caused by authpsa processes bug is fixed.

since 9.2.3 version. It can be related.

 

[fearz]

9.5.2

It's 9.5.2

 

[CatalinS]

Hello,

Try doing a netstat -napt |grep couriertcpd and see how many connections there are. I am unable to duplicate this problem on any of my Plesk servers.

Cheers.