PaX - gresec patch

[Vladimir Strycek <vladoportos@vladoportos.sk>]

Hi all,

i heard some interesting stuff about grsec so i decide to install it and 
found this in apt

chpax - user-space utility to control PaX flags
gradm2 - Administration program for the grsecurity2 RBAC based ACL system
kernel-patch-grsecurity2 - grsecurity kernel patch - new major upstream 
version
paxctl - user-space utility to control PaX flags - new major upstream 
version

Is it reasonable to install on production server ? what are proc and 
cons of this kernel-patch-grsecurity2  ?

Do i need only kernel-patch-grsecurity2 , what are PaX flags ?

Thanks and best regards
Vladimir