On Thu, August 10, 2006 11:15 pm, Bill Boebel <bill@webmail.us> said:

On Thu, August 10, 2006 5:22 pm, Timo Sirainen <tss@iki.fi> said:

...

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Aug 10 16:23:34 director5 dovecot: imap-login: Disconnected: Connection queue full:

I am seeing this logged several times per minute. From netstat, the server has 650 proxied IMAP connections and 450 proxied IMAPS connections, there are currently 10 imap-login processes running, and using the following config:

I did some changes to CVS which hopefully should fix this?

It is still disconnecting with "Connection queue full", although less frequently. Testing with about 315 IMAP connections right now and same config as earlier today, so it should never hit this condition, right?

The weird thing is sometimes when I am testing via telnet, my session encounters this condition and disconnects within the first 5 seconds. It does this with and without these patches.

Here is another symptom: The number of IMAP connections drops steeply repeatedly ever 30 seconds or so. It does this only with the latest CVS (dovecot-20060811), not with the version I was testing previously (dovecot-20060808).

These were taken about 2 seconds apart:

netstat -an | grep -c "192.168.1.69:143.*ESTA"

85

netstat -an | grep -c "192.168.1.69:143.*ESTA"

108

netstat -an | grep -c "192.168.1.69:143.*ESTA"

108

netstat -an | grep -c "192.168.1.69:143.*ESTA"

114

netstat -an | grep -c "192.168.1.69:143.*ESTA"

52

netstat -an | grep -c "192.168.1.69:143.*ESTA"

73

netstat -an | grep -c "192.168.1.69:143.*ESTA"

80

netstat -an | grep -c "192.168.1.69:143.*ESTA"

85

netstat -an | grep -c "192.168.1.69:143.*ESTA"

89

netstat -an | grep -c "192.168.1.69:143.*ESTA"

99

netstat -an | grep -c "192.168.1.69:143.*ESTA"

105

netstat -an | grep -c "192.168.1.69:143.*ESTA"

114

netstat -an | grep -c "192.168.1.69:143.*ESTA"

122

netstat -an | grep -c "192.168.1.69:143.*ESTA"

135

netstat -an | grep -c "192.168.1.69:143.*ESTA"

32

netstat -an | grep -c "192.168.1.69:993.*ESTA"

67

netstat -an | grep -c "192.168.1.69:993.*ESTA"

69

netstat -an | grep -c "192.168.1.69:993.*ESTA"

74

netstat -an | grep -c "192.168.1.69:993.*ESTA"

83

netstat -an | grep -c "192.168.1.69:993.*ESTA"

88

netstat -an | grep -c "192.168.1.69:993.*ESTA"

95

netstat -an | grep -c "192.168.1.69:993.*ESTA"

48

lsof -nu dovecot |wc -l

616

lsof -nu dovecot |wc -l

665

lsof -nu dovecot |wc -l

690

lsof -nu dovecot |wc -l

687

lsof -nu dovecot |wc -l

706

lsof -nu dovecot |wc -l

713

lsof -nu dovecot |wc -l

735

lsof -nu dovecot |wc -l

767

lsof -nu dovecot |wc -l

803

lsof -nu dovecot |wc -l

853

lsof -nu dovecot |wc -l

891

lsof -nu dovecot |wc -l

910

lsof -nu dovecot |wc -l

933

lsof -nu dovecot |wc -l

958

lsof -nu dovecot |wc -l

575

lsof -nu dovecot |wc -l

620

lsof -nu dovecot |wc -l

629

lsof -nu dovecot |wc -l

669

lsof -nu dovecot |wc -l

701