Some concerns here:
Is it for production purposes, if so you would consider having MySQL in its own separate server, then DB is tweak and scarifice options for tables mostly on engines i.e. MYISAM & INNODB choose on application and access or load.
To improve perfomance consider having only the necessary services running and disable the unnecessary ones (this is also for security purposes - chkconfig will assist here)
Another option would change the runlevel to 3 if defaults to 5 with GUI.
Those are some of the options off my head...
./TheMburu
--
Conservatism is the adherence to the old tried against the new untried.