Dovecot impatient with mysql?

[Robert Moskowitz]

It seems dovecot is impatient with connecting with mysql, as I see in 
maillog entries like:

Apr  6 11:48:30 z9m9z dovecot: dict: Error: mysql(localhost): Connect 
failed to database (postfix): Can't connect to local MySQL server 
through socket '/var/lib/mysql/mysql.sock' (13) - waiting for 5 seconds 
before retry
Apr  6 11:48:35 z9m9z dovecot: dict: Error: mysql(localhost): Connect 
failed to database (postfix): Can't connect to local MySQL server 
through socket '/var/lib/mysql/mysql.sock' (13) - waiting for 25 seconds 
before retry

I suspect it does connect eventually.  This is a test system with only 
1GB of memory and free reports:

               total        used        free      shared buff/cache 
available
Mem:        1025484      696344       24556 21528      304584      251552
Swap:        524284       92168      432116


The production box has 2GB, so if the problem is mysql is swapping out, 
that will be 'fixed', if it is processor, well this is an ARMv7 duo 
core, as is the production box.  I am considering buying the new quad core.

Is there anything I can do to get dovecot more patient with mysql, or 
just ignore there messages?

thank you