Best Performance with 2.64

[Thompsonīs Mail]

Hi all!

 Iīm using in my server SpamAssassin 2.64, and I would like to know as to get 
best performance with the system.  Iīm not use auto-lern, just rules in files 
cf.

 Exists some configuration to improve performance?  Any URL or Docs ?

Tks!
Thompson