Terrible performance and Upgrade

Rob Siemborski rjs3 at andrew.cmu.edu
Mon Feb 9 09:52:07 EST 2004

On Sat, 7 Feb 2004, Matthew Baker wrote:

> Problem 1.
> Saslauthd gradually grows in memory size until the login process grinds
> to a halt. I have set it to restart once an hour to clear it. I have
> tried setting the option -n0 to force a child for each auth request but
> that seem to create numerous connections to the database which would
> exceed the max connections variable. I now am thinking that to use
> auxprop mysql plugin might be a better route. I currently have 183
> mysqld processes running, this can't be right.

If you are using PAM with saslauthd, you need to be very sure that
whatever PAM module you are using doesn't have any memory leaks, otherwise
you'll become very sad very quickly.

> It takes between 7 and 15 seconds to login into any mailbox even if it's
> empty. Regardless of client or OS. Also it takes about 5 minutes after a
>   restart before the deliver.db is ready and logins start. My old PII
> 400 I was using before was faster!

What part is taking the time?  Long login times are often caused by
insufficient entropy in the system.


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

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