David, how did you verify that the connections are from DBMAIL? The reason
I ask is that I run postfix on the frontend and I do database lookups for
transport and aliases against postgres. Those connections aren't always
persistent so I get a lot of disconnects resulting in some TIME_WAITs.
Just curious if maybe you're seeing those TIME_WAITS from the mailer.
David
----- Original Message -----
From: "Niblett, David A" <[EMAIL PROTECTED]>
To: "'DBMail mailinglist'" <dbmail@dbmail.org>
Sent: Friday, July 01, 2005 9:02 AM
Subject: RE: [Dbmail] TIME_WAIT processes
I thought that too, but the TIME_WAIT ones are not persistent.
They eventually die off after ~4m which I think is the
standard, but new ones are constantly made.
--
David A. Niblett | email: [EMAIL PROTECTED]
Network Administrator | Phone: (352) 334-3400
Gainesville Regional Utilities | Web: http://www.gru.net/
-----Original Message-----
From: Micah [mailto:[EMAIL PROTECTED]
Sent: Friday, July 01, 2005 11:48 AM
To: DBMail mailinglist
Subject: Re: [Dbmail] TIME_WAIT processes
Sounds like each child gets a persistant connection to the database to
reduce overhead during client connections. The number of waiting
connections is equal to the amount of child processes, no?
-Micha
Niblett, David A wrote:
I've noticed that when I start dbmail-X there always
seem to be a large number of TIME_WAIT connections
reported by netstat. All of these connections are going
to my postgres database.
For example, I only have IMAP running, with the following:
NCHILDREN=5
MAXCHILDREN=20
MINSPARECHILDREN=2
MAXSPARECHILDREN=4
MAXCONNECTS=10000
TIMEOUT=4000
In my netstat output, I have 5 "established" connection to
the database, and then at a minimum of 48 in "time_wait".
That number grows to 55, and then drops back to 48.
When I run IMAP with a trace level of 9, it shows the starting of the 5
children and then nothing else. (this is a test server no traffic).
I'm lost as to why this is happening, anyone else see this,
or know why it happens?
TIA
--
David A. Niblett | email: [EMAIL PROTECTED]
Network Administrator | Phone: (352) 334-3400
Gainesville Regional Utilities | Web: http://www.gru.net/
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