[ADMIN] centos install

[dx k9]

Greetings, Are there any compile options I should use when compiling(configure) 
posgresql-9.1.7 from source on a new centos 6.3 box?   Just wondering what 
different gcc compile options are used in the postgresql 9.1 centos RPM that we 
could copy in an effort to increase kernel performance, get higher TPS on 
pgbench.    
Thread model: posix
gcc version 4.4.6 20120305 (Red Hat 4.4.6-4) (GCC) -O2?
Thanks,~DjK